阅读说明：本技术 一种串馈天线、通信设备以及制作串馈天线的方法 (Series feed antenna, communication equipment and method for manufacturing series feed antenna ) 是由 周宇香 彭杰 杨小盼 于 2020-04-14 设计创作，主要内容包括：本申请提供了一种串馈天线、通信设备和制作串馈天线的方法,包括：第一基板,该第一基板下表面设置有第一金属介质；第二基板,该第二基板设置于该第一基板的上方,该第二基板与该第一基板之间设置有第二金属介质,该第二金属介质、该第一基板以及该第一金属介质中设置有多个金属化孔,通过该多个金属化孔形成从该第一金属介质至该第二金属介质的区域,在该第二金属介质中设置有至少一个缝隙,该至少一个缝隙位于所述区域内,该第二基板的上表面设置有至少一个辐射贴片,该至少一个缝隙对应该至少一个辐射贴片。本申请实施例提供的串馈天线,可以提升串馈天线的工作带宽,且结构简单,占用面积小。(The application provides a series feed antenna, a communication device and a method for manufacturing the series feed antenna, comprising the following steps: the lower surface of the first substrate is provided with a first metal medium; the second substrate is arranged above the first substrate, a second metal medium is arranged between the second substrate and the first substrate, a plurality of metalized holes are formed in the second metal medium, the first substrate and the first metal medium, an area from the first metal medium to the second metal medium is formed through the metalized holes, at least one gap is formed in the second metal medium and located in the area, at least one radiation patch is arranged on the upper surface of the second substrate, and the at least one gap corresponds to the at least one radiation patch. The feed-series antenna provided by the embodiment of the application can improve the working bandwidth of the feed-series antenna, and is simple in structure and small in occupied area.)

1. A series fed antenna, comprising:

the lower surface of the first substrate is provided with a first metal medium;

the second substrate is arranged above the first substrate, a second metal medium is arranged between the second substrate and the first substrate, a plurality of metalized holes are formed in the second metal medium, the first substrate and the first metal medium, an area from the first metal medium to the second metal medium is formed through the metalized holes, at least one gap is formed in the second metal medium and located in the area, at least one radiation patch is arranged on the upper surface of the second substrate, and the at least one gap corresponds to the at least one radiation patch.

2. The antenna of claim 1, wherein the at least one slot corresponds to the at least one radiating patch and comprises:

the at least one slot corresponds to the at least one radiation patch one by one; or

Each of the at least one slot corresponds to at least one radiating patch; or

Each of the at least one radiating patch corresponds to at least one slot.

3. An antenna according to claim 1 or 2, wherein the at least one radiating patch covers the at least one slot.

4. An antenna according to any of claims 1 to 3, wherein the region is a surrounding region formed by the plurality of metallised holes, the Substrate Integrated Waveguide (SIW) channel being formed within the surrounding region.

5. The antenna of any one of claims 1 to 4, wherein adjacent metallized holes of the plurality of metallized holes are equally spaced.

6. The antenna according to any one of claims 1 to 5, wherein the at least one slot includes a plurality of slots, the plurality of slots are arranged in a vertical direction, the vertical direction is a direction of the first side edge of the second metal medium, and areas of the plurality of slots are different.

7. The antenna of claim 6, wherein the plurality of slots have areas such that the difference between the main lobe energy and the side lobe energy radiated by the at least one radiating patch is greater than or equal to a first predetermined threshold.

8. The antenna of any one of claims 1 to 7, wherein the at least one slot comprises a plurality of slots, the plurality of slots being offset differently relative to a center of the region.

9. The antenna of claim 8, wherein the plurality of slots are offset from the center of the area such that a difference between a main lobe energy and a side lobe energy radiated by the at least one radiating patch is greater than or equal to a first preset threshold.

10. The antenna of any one of claims 1 to 9, wherein the at least one radiating patch comprises a plurality of radiating patches that differ in area.

11. The antenna of claim 10, wherein the areas of the plurality of radiating patches are such that the difference between the main lobe energy and the side lobe energy radiated by the plurality of radiating patches is greater than or equal to a first preset threshold.

12. The antenna of any one of claims 1 to 11, wherein the at least one radiating patch comprises a plurality of radiating patches, a center distance between different patches of the plurality of radiating patches being an integer multiple of half of a waveguide wavelength of the channel, wherein the channel is a waveguide channel.

13. The antenna according to any one of claims 1 to 12, wherein the at least one radiation patch comprises a plurality of radiation patch groups distributed in a vertical direction, a distance between different radiation patch groups in the plurality of radiation patch groups is a second preset threshold, and the vertical direction is a direction of the first side of the second metal medium.

14. The antenna according to any one of claims 1 to 13, wherein the radiating patch is provided with parasitic patches on both upper and lower sides in the direction of the first side of the second metal medium.

15. The antenna of any one of claims 1 to 14, further comprising:

the third base plate is arranged above the radiation patches, and at least one radiation patch is arranged on the upper surface of the third base plate.

16. A communication device, characterized in that it comprises an antenna according to any of the preceding claims 1 to 15.

17. A method of making a series fed antenna, comprising:

arranging a first metal medium on the lower surface of the first substrate;

the radiation patch structure comprises a first substrate, a second substrate and a plurality of metalized holes, wherein the second substrate is arranged above the first substrate, a second metal medium is arranged between the second substrate and the first substrate, the second metal medium, the first substrate and the first metal medium are provided with the metalized holes, a region from the first metal medium to the second metal medium is formed through the metalized holes, at least one gap is arranged in the second metal medium and located in the region, and the upper surface of the second substrate is provided with at least one radiation patch, wherein the at least one gap corresponds to the at least one radiation patch.

18. The method of claim 17, wherein the at least one slot corresponds to the at least one radiating patch and comprises:

the at least one slot corresponds to the at least one radiation patch one by one; or

Each of the at least one slot corresponds to at least one radiating patch; or

Each of the at least one radiating patch corresponds to at least one slot.

19. The method of claim 17 or 18, wherein the at least one radiating patch covers the at least one aperture.

20. The method of any of claims 17 to 19, wherein the region is a surrounding region formed by the plurality of metallized holes, the Substrate Integrated Waveguide (SIW) channel being formed within the surrounding region.

21. The method of any of claims 17 to 20, wherein adjacent ones of the plurality of metallized holes are equally spaced.

22. The method according to any one of claims 17 to 21, wherein the at least one slot comprises a plurality of slots, the plurality of slots being arranged in a vertical direction, the vertical direction being in a direction of the first side of the second metal medium, the plurality of slots having different areas.

23. The method of claim 22, wherein the areas of the plurality of slits are such that the difference between the main lobe energy and the side lobe energy radiated by the at least one radiating patch is greater than or equal to a first preset threshold.

24. The method of any one of claims 17 to 23, wherein the at least one slit comprises a plurality of slits that are offset differently relative to a center of the region.

25. The method of claim 24, wherein the plurality of slits are offset from the center of the area such that a difference between a main lobe energy and a side lobe energy radiated by the at least one radiating patch is greater than or equal to a first preset threshold.

26. The method of any one of claims 17 to 25, wherein the at least one radiating patch comprises a plurality of radiating patches that differ in area.

27. The method of claim 26, wherein the areas of the plurality of radiating patches are such that a difference between a main lobe energy and a side lobe energy radiated by the plurality of radiating patches is greater than or equal to a first preset threshold.

28. The method of any one of claims 17 to 27, wherein the at least one radiating patch comprises a plurality of radiating patches, a center distance between different patches of the plurality of radiating patches being an integer multiple of half of a waveguide wavelength of the channel, wherein the channel is a waveguide channel.

29. The method according to any one of claims 17 to 28, wherein the at least one radiation patch comprises a plurality of radiation patch groups distributed in a vertical direction, a distance between different radiation patch groups in the plurality of radiation patch groups is a second preset threshold, and the vertical direction is a direction of the first side of the second metal medium.

30. The method according to any one of claims 17 to 29, wherein the radiating patches are provided with parasitic patches on both upper and lower sides in the direction of the first side of the second metal medium.

31. The method of any one of claims 17 to 30, further comprising:

and a third substrate is arranged above the radiation patches, and at least one radiation patch is arranged on the upper surface of the third substrate.

Technical Field

The present application relates to the field of communications, and in particular, to a series feed antenna, a communication device, and a method for manufacturing a series feed antenna.

Background

The feed line structure of the series feed antenna is simple, and the occupied area is small, so that the series feed antenna is widely applied. But the series fed standing wave antenna is characterized by a narrow bandwidth.

In order to realize a broadband series-fed antenna, a multi-stack structure may be adopted in one mode, and by arranging 2 or more patches, at least 2 in-band resonance points can be realized, so that a required bandwidth can be covered. However, this approach requires a multilayer Printed Circuit Board (PCB) stack, which is complex and costly to implement.

Another implementation mode may be a series-fed traveling-wave antenna, and the operation of the series-fed traveling-wave antenna is characterized in that the energy dissipation difference of the energy dissipation operation mode to a wider frequency band range is small, so that broadband operation can be realized. However, this implementation is accompanied by significant beam dispersion, thereby increasing system processing cost and complexity of the algorithm processing.

Disclosure of Invention

The embodiment of the application provides a series feed antenna, a communication device and a method for manufacturing the series feed antenna, which can improve the working bandwidth of the series feed antenna, and have the advantages of simple structure and small occupied area.

In a first aspect, a series feed antenna is provided, including: the lower surface of the first substrate is provided with a first metal medium; the second substrate is arranged above the first substrate, a second metal medium is arranged between the second substrate and the first substrate, a plurality of metalized holes are formed in the second metal medium, the first substrate and the first metal medium, an area from the first metal medium to the second metal medium is formed through the metalized holes, at least one gap is formed in the second metal medium and located in the area, at least one radiation patch is arranged on the upper surface of the second substrate, and the at least one gap corresponds to the at least one radiation patch.

The series feed antenna that this application embodiment provided, because including at least one radiation paster, a plurality of metallization hole and at least one gap in this antenna structure, through the region that a plurality of metallization holes formed to and the gap, unite the radiation paster of second base plate upper surface, form the working method of double resonance, and then can realize the broadband characteristic, and simple structure, area occupied is little.

With reference to the first aspect, in certain implementations of the first aspect, the antenna is a standing wave antenna.

According to the technical scheme, the standing wave antenna is adopted, so that beam dispersion can be avoided, and therefore the system processing cost and the algorithm processing complexity can be reduced.

With reference to the first aspect, in certain implementations of the first aspect, the at least one radiating patch covers the at least one aperture.

According to the series feed antenna provided by the embodiment of the application, as the at least one radiating patch covers the at least one slot, the at least one slot can pass through a signal emitted by the excitation source, so that the passed signal is coupled to the radiating patch, and a broadband characteristic is better realized.

The excitation source in the embodiment of the present application may transmit a signal, for example, the excitation source may be a power supply chip, a bluetooth chip, or a wireless fidelity (WIFI) chip, which is not specifically limited in this application, and the present application may be applied to any chip that can transmit a signal.

With reference to the first aspect, in certain implementations of the first aspect, the region is a surrounding region formed by the plurality of metalized holes, and the SIW channel is formed within the surrounding region.

The SIW channel in the embodiment of the present application is located in the surrounding area formed by the plurality of metallized holes, and the SIW channel can confine the signal emitted by the excitation source to the inside of the substrate, so that the loss of the signal can be reduced.

With reference to the first aspect, in certain implementations of the first aspect, the pitch of adjacent metallization holes of the plurality of metallization holes is equal.

With reference to the first aspect, in certain implementations of the first aspect, the at least one slit includes a plurality of slits, the plurality of slits are arranged in a vertical direction, the vertical direction is a direction of the first side edge of the second metal medium, and areas of the plurality of slits are different. On the premise that the second metal medium is three-dimensional and has three dimensions in the length direction, the width direction and the height direction (the height can be understood as the thickness of the metal medium), the first side edge may be a long edge or a wide edge of the second metal medium.

With reference to the first aspect, in certain implementations of the first aspect, the areas of the plurality of slits are such that a difference between a main lobe energy and a side lobe energy radiated by the at least one radiation patch is greater than or equal to a first preset threshold.

According to the technical scheme of the embodiment of the application, the expected difference value between the main lobe energy and the side lobe energy can be achieved by adjusting the areas of the plurality of gaps, so that the low side lobe can be realized.

With reference to the first aspect, in certain implementations of the first aspect, the at least one slit includes a plurality of slits that are offset differently with respect to a center of the region.

With reference to the first aspect, in certain implementations of the first aspect, the plurality of slits are offset with respect to a center of the region such that a difference between a main lobe energy and a side lobe energy radiated by the at least one radiation patch is greater than or equal to a first preset threshold.

According to the technical scheme of the embodiment of the application, the difference value of the expected main lobe energy and the expected side lobe energy can be achieved by adjusting the offsets of the plurality of slits relative to the center of the area, so that the low side lobe can be realized.

With reference to the first aspect, in certain implementations of the first aspect, the at least one radiating patch includes a plurality of radiating patches that differ in area.

With reference to the first aspect, in certain implementations of the first aspect, the areas of the plurality of radiation patches are such that a difference between a main lobe energy and a side lobe energy radiated by the plurality of radiation patches is greater than or equal to a first preset threshold.

According to the technical scheme of the embodiment of the application, the difference value of the expected main lobe energy and the expected side lobe energy can be achieved by adjusting the areas of the plurality of radiation patches, so that the low side lobe can be realized.

With reference to the first aspect, in certain implementations of the first aspect, the at least one radiating patch includes a plurality of radiating patches, and a center distance between different patches of the plurality of radiating patches is an integer multiple of half of a waveguide wavelength of the channel, where the channel is a waveguide channel.

With reference to the first aspect, in certain implementations of the first aspect, the at least one radiation patch includes a plurality of radiation patch groups distributed in a vertical direction, a distance between different radiation patch groups in the plurality of radiation patch groups is a second preset threshold, and the vertical direction is a direction of the first side of the second metal medium.

With reference to the first aspect, in certain implementations of the first aspect, the radiating patches are provided with parasitic patches at upper and lower sides in a direction of the first side of the second metal medium.

According to the technical scheme provided by the embodiment of the application, as the parasitic patches are arranged on the upper side and the lower side of the radiation patch in the direction of the first side edge of the second metal medium, the broadband characteristic can be further realized through the area formed by the plurality of metalized holes, the gap, the radiation patch and the parasitic patches.

With reference to the first aspect, in certain implementations of the first aspect, the antenna further includes: the third base plate is arranged above the radiation patches, and at least one radiation patch is arranged on the upper surface of the third base plate.

According to the scheme provided by the embodiment of the application, the third substrate and the radiation patch positioned on the third substrate are arranged in the antenna structure, and a multi-resonance working mode is formed by combining the radiation patch on the upper surface of the second substrate and the radiation patch on the upper surface of the third substrate through the area formed by the plurality of metalized holes and the gap, so that the broadband characteristic can be further realized.

In a second aspect, a communication device is provided, which includes the first aspect and the series-fed antenna in any implementation manner of the first aspect.

In a third aspect, a method for manufacturing a series-fed antenna is provided, including disposing a first metal medium on a lower surface of a first substrate; the radiation patch structure comprises a first substrate, a second substrate and a plurality of metalized holes, wherein the second substrate is arranged above the first substrate, a second metal medium is arranged between the second substrate and the first substrate, the second metal medium, the first substrate and the first metal medium are provided with the metalized holes, a region from the first metal medium to the second metal medium is formed through the metalized holes, at least one gap is arranged in the second metal medium and located in the region, and the upper surface of the second substrate is provided with at least one radiation patch, wherein the at least one gap corresponds to the at least one radiation patch.

With reference to the third aspect, in certain implementations of the third aspect, the at least one slot corresponds to the at least one radiating patch, and includes: the at least one slot corresponds to the at least one radiation patch one by one; or each of the at least one slot corresponds to at least one radiating patch; or each of the at least one radiating patch corresponds to at least one slot.

With reference to the third aspect, in certain implementations of the third aspect, the at least one radiating patch covers the at least one aperture.

With reference to the third aspect, in certain implementations of the third aspect, the area is a surrounding area formed by the plurality of metalized holes, and the SIW channel is formed within the surrounding area.

With reference to the third aspect, in certain implementations of the third aspect, the pitch of adjacent ones of the plurality of metallization holes is equal.

With reference to the third aspect, in certain implementations of the third aspect, the at least one slit includes a plurality of slits, the plurality of slits are arranged in a vertical direction, the vertical direction is a direction of the first side of the second metal medium, and areas of the plurality of slits are different.

With reference to the third aspect, in certain implementations of the third aspect, the areas of the plurality of slits are such that a difference between a main lobe energy and a side lobe energy radiated by the at least one radiation patch is greater than or equal to a first preset threshold.

With reference to the third aspect, in certain implementations of the third aspect, the at least one slit includes a plurality of slits that are offset differently with respect to a center of the region.

With reference to the third aspect, in certain implementations of the third aspect, the plurality of slits are offset with respect to a center of the region such that a difference between a main lobe energy and a side lobe energy radiated by the at least one radiating patch is greater than or equal to a first preset threshold.

With reference to the third aspect, in certain implementations of the third aspect, the at least one radiating patch includes a plurality of radiating patches that differ in area.

With reference to the third aspect, in certain implementations of the third aspect, the areas of the plurality of radiation patches are such that a difference between a main lobe energy and a side lobe energy radiated by the plurality of radiation patches is greater than or equal to a first preset threshold.

With reference to the third aspect, in certain implementations of the third aspect, the at least one radiating patch includes a plurality of radiating patches, a center distance between different patches of the plurality of radiating patches is an integer multiple of half of a waveguide wavelength of the channel, wherein the channel is a waveguide channel.

With reference to the third aspect, in certain implementations of the third aspect, the at least one radiation patch includes a plurality of radiation patch groups distributed in a vertical direction, a distance between different radiation patch groups in the plurality of radiation patch groups is a second preset threshold, and the vertical direction is a direction of the first side of the second metal medium.

With reference to the third aspect, in certain implementations of the third aspect, the radiating patches are provided with parasitic patches at upper and lower sides in a direction of the first side of the second metal medium.

With reference to the third aspect, in certain implementations of the third aspect, the method further includes: and a third substrate is arranged above the radiation patches, and at least one radiation patch is arranged on the upper surface of the third substrate.

In a fourth aspect, a radar is provided, which includes the first aspect and the series-fed antenna in any implementation manner of the first aspect.

Drawings

Fig. 1 is a functional block diagram of a vehicle 100 provided in an embodiment of the present application.

Fig. 2 is a schematic diagram of an antenna provided in an embodiment of the present application.

Fig. 3 is a schematic structural diagram of a series-fed antenna according to an embodiment of the present application.

Fig. 4 is a schematic diagram of an S parameter of an antenna provided in an embodiment of the present application.

Fig. 5 is a schematic structural diagram of a top view of a series fed antenna according to another embodiment of the present application.

Fig. 6 is a schematic structural diagram of a top view of a series fed antenna according to still another embodiment of the present application.

Fig. 7 is a schematic diagram of energy radiated by the radiation patch provided in the embodiment of the present application.

Fig. 8 is a schematic structural diagram of a top view of a series fed antenna according to still another embodiment of the present application.

Fig. 9 is a schematic structural diagram of a top view of a series fed antenna according to still another embodiment of the present application.

Fig. 10 is a schematic structural diagram of a front view of a series feed antenna according to another embodiment of the present application.

Fig. 11 is a schematic structural diagram of a communication device according to an embodiment of the present application.

Fig. 12 is a schematic flowchart for manufacturing a series feed antenna according to an embodiment of the present application.

Detailed Description

The technical solution in the present application will be described below with reference to the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The technical solution of the embodiment of the present application may be applied to various automobile radar antennas, for example, the technical solution may be applied to an automobile radar antenna with a frequency of 24GHz or 77GHz, and may also be applied to medical imaging, a communication base station or a satellite antenna, and the like, and this application is not particularly limited thereto.

Take car radar as an example. Fig. 1 is a functional block diagram of a vehicle 100 provided in an embodiment of the present application.

The vehicle 100 may include various subsystems such as a travel system 102, a sensor system 104, a control system 106, one or more peripherals 108, as well as a power supply 110, a computer system 112, and a user interface 116. Alternatively, vehicle 100 may include more or fewer subsystems, and each subsystem may include multiple elements. In addition, each of the sub-systems and elements of the vehicle 100 may be interconnected by wire or wirelessly.

The sensor system 104 may include a number of sensors that sense information about the environment surrounding the vehicle 100. For example, the sensor system 104 may include a positioning system 122 (which may be a GPS system, a beidou system, or other positioning system), an Inertial Measurement Unit (IMU) 124, a radar 126, a laser range finder 128, and a camera 130. The sensor system 104 may also include sensors of internal systems of the monitored vehicle 100 (e.g., an in-vehicle air quality monitor, a fuel gauge, an oil temperature gauge, etc.). Sensor data from one or more of these sensors may be used to detect the object and its corresponding characteristics (position, shape, orientation, velocity, etc.). Such detection and identification is a critical function of the safe operation of the autonomous vehicle 100.

The positioning system 122 may be used to estimate the geographic location of the vehicle 100. The IMU 124 is used to sense position and orientation changes of the vehicle 100 based on inertial acceleration. In one embodiment, IMU 124 may be a combination of an accelerometer and a gyroscope.

The radar 126 may utilize electromagnetic wave signals to sense objects within the surrounding environment of the vehicle 100. In some embodiments, in addition to sensing objects, radar 126 may also be used to sense the speed and/or heading of an object.

The laser rangefinder 128 may utilize laser light to sense objects in the environment in which the vehicle 100 is located. In some embodiments, the laser rangefinder 128 may include one or more laser sources, laser scanners, and one or more detectors, among other system components.

The camera 130 may be used to capture multiple images of the surrounding environment of the vehicle 100. The camera 130 may be a still camera or a video camera.

The vehicle 100 may be a car, a truck, a motorcycle, a bus, a boat, an airplane, a helicopter, a lawn mower, an amusement car, a playground vehicle, construction equipment, a trolley, a golf cart, a train, a trolley, etc., and the embodiment of the present invention is not particularly limited.

The above-mentioned radar 126 may include a series-fed antenna (may be simply referred to as a series-fed antenna) or a parallel-fed antenna (may be simply referred to as a parallel-fed antenna), as shown in (a) and (b) of fig. 2, which are schematic diagrams of the series-fed antenna and the parallel-fed antenna, respectively.

Referring to (a) of fig. 2, the series feed antenna may include a patch 211 and a feed line 212, and a plurality of patches 211 may be connected in series by the feed line 212. Referring to (b) of fig. 2, the parallel feed antenna may include a patch 221 and a feed line 222, and a plurality of patches 221 may be connected in parallel by the feed line 222.

The feeder structure of the series feed antenna is simple, the occupied area is small, and radiation caused by the feeder is small. The series fed antenna may include a series fed standing wave antenna and a series fed traveling wave antenna, wherein the series fed standing wave antenna is characterized by a narrow bandwidth.

In order to realize a broadband series-fed antenna, a multi-stack structure may be adopted in one mode, and by arranging 2 or more patches, at least 2 in-band resonance points can be realized, so that a required bandwidth can be covered. However, this approach requires multiple PCB stacks, is complex to implement, and is costly.

Another implementation mode may be a series-fed traveling-wave antenna, and the operation of the series-fed traveling-wave antenna is characterized in that the energy dissipation difference of the energy dissipation operation mode to a wider frequency band range is small, so that broadband operation can be realized. However, in this implementation, the series-fed traveling wave antenna is accompanied by significant beam dispersion, i.e., differences in beam pointing at different frequency points. In radar applications, for example, beam dispersion may cause the detection target to be lost with frequency point switching, and in most radar or communication systems, beam dispersion increases system processing cost and complexity of algorithm processing. Furthermore, for series fed travelling wave antennas, more antenna elements are typically required and occupy more PCB area if no end-matching load is employed.

The application provides a series feed antenna, can promote the working bandwidth of series feed antenna, and simple structure, area occupied is little.

Fig. 3 is a schematic diagram of a series-fed antenna 300 according to an embodiment of the present disclosure. Fig. 3 (a) is a front view of a series feed antenna provided in an embodiment of the present application, fig. 3 (b) is a side view of the series feed antenna provided in the embodiment of the present application, and fig. 3 (c) is a top view of the series feed antenna provided in the embodiment of the present application.

As shown in fig. 3 (a), the series fed antenna 300 may include at least one first substrate 310, at least one second substrate 320, a first metal medium 311, a second metal medium 321, at least one metalized hole 312, at least one slot 322, and at least one radiating patch 331.

The first metal medium 311 is disposed on the lower surface of the first substrate 310.

The second substrate 320 is disposed above the first substrate 310, a second metal medium 321 is disposed between the second substrate 320 and the first substrate 310, a plurality of metalized holes 312 are disposed in the second metal medium 321, the first substrate 310 and the first metal medium 311, a region from the first metal medium 311 to the second metal medium 321 is formed by the metalized holes 312, at least one slot 322 is disposed in the second metal medium 321, the at least one slot 322 is located in the region, at least one radiation patch 331 is disposed on the upper surface of the second substrate 320, and the at least one slot 322 corresponds to the at least one radiation patch 331.

The metallized holes 312 in the embodiment of the present application are holes having a conductive function, or referred to as conductive holes, for example, laser holes, or mechanical holes, which is not particularly limited in the present application.

In the embodiment of the present application, the region where the plurality of metalized holes 312 are formed from the first metal medium 311 to the second metal medium 321 may refer to a "door" -shaped region where the plurality of metalized holes 312 are formed, such as a region formed by a dotted line around the plurality of metalized holes 312 in (c) in fig. 3.

In addition, the channels in the area formed by the plurality of metalized holes 312 may be referred to as Substrate Integrated Waveguide (SIW) channels, and may also be referred to as other types of channels, which is not particularly limited in this application, as long as the channels formed by the plurality of metalized holes can confine signals or energy.

The SIW channel in this application may refer to a channel in a region formed by a medium and a metallized hole provided on a substrate, and may be a channel in a microwave transmission form, and may implement field propagation of a waveguide on the medium using the metallized hole.

The first substrate 310 and the second substrate 320 in this embodiment of the application may be PCBs, and the first metal medium 311 and/or the second metal medium 321 in this embodiment of the application may be copper sheets, or may be other substances with conductivity, which should not be particularly limited in this application.

In addition, the radiation patch 331 in the embodiment of the present application may radiate a signal, for example, may be a copper sheet or a copper foil, or may be another conductive substance, and the present application is not particularly limited thereto, as long as the patch capable of radiating a signal may be applied to the present application.

In some embodiments, the radiating patch 331 may be referred to as a main radiating patch, and may also be referred to as another patch, without limitation. The main radiating patch in this application may refer to a patch on the second substrate 320, in other words, a patch closer to the at least one slit 322. For the sake of convenience of distinction, at least one radiation patch may be disposed on the third substrate, and the at least one radiation patch on the third substrate is distant from the at least one slit 322, and may be referred to as an auxiliary radiation patch.

It should be noted that the main radiation patch and the auxiliary radiation patch are opposite, and the distance between the at least one radiation patch 331 and the at least one slot 322 on the second substrate is shorter than the distance between the at least one radiation patch and the at least one slot 322 on the third substrate, and therefore, may be referred to as a main radiation patch; the distance between the at least one radiation patch on the third substrate and the at least one slot 322 is relatively long with respect to the distance between the at least one radiation patch 331 on the second substrate and the at least one slot 322, and thus, may be referred to as a secondary radiation patch.

The first metal dielectric 311, the second metal dielectric 321, and the radiation patch 331 in the embodiment of the present application may be painted on the surface of the substrate. For example, the first metal dielectric 311 may be painted on the lower surface of the first substrate 310, the second metal dielectric 321 may be painted on the upper surface of the first substrate 310, and the radiation patch 331 may be painted on the upper surface of the second substrate 320.

It is understood that the upper surface or the lower surface in the embodiments of the present application is opposite, for example, the second metal medium is coated on the upper surface of the first substrate, the second metal medium is located on the upper surface of the first substrate, and the second metal medium is located on the lower surface of the second substrate. In other words, the upper surface may be replaced with a "first surface", and the lower surface may be replaced with a "second surface" for distinguishing two surfaces of the substrate in different directions.

In the embodiment of the present invention, the thicknesses of the first metal dielectric 311, the second metal dielectric 321, and the radiation patch 331 painted on the surface of the substrate may be relatively thin, and the sizes thereof may be on the millimeter level or the micrometer level, without limitation.

In the embodiment of the present application, the second substrate 320 is disposed above the first substrate 310, and as shown in (a) of fig. 3, the second substrate 320 may be disposed directly above the first substrate 310. In some embodiments, the second substrate 320 may not be disposed directly above the first substrate 310, for example, the second substrate 320 may be disposed above the first substrate 310 obliquely to the left or right.

In the embodiment of the present application, a region from the first metal medium 311 to the second metal medium 321 is formed by the plurality of metalized holes 312, so that a signal emitted by an excitation source can be bound to the inside of the substrate, and the signal emitted by the excitation source can pass through at least one slot 322 arranged in the second metal medium 321 in the region, and a part of the signal passing through the at least one slot 322 can be coupled to the radiation patch 331, so that a dual-resonance mode of operation is formed due to different parameters, such as different inductive and/or capacitive parameters, exhibited by the at least one radiation patch 331 and the at least one slot 322, and 2 in-band resonance points and broadband characteristics are realized.

Fig. 4 is a schematic diagram of an S parameter of a series-fed antenna according to an embodiment of the present application. As can be seen from the figure, there are 2 resonance points, namely a first resonance point 77.8GHz and a second resonance point 79.5GHz, respectively, which can support the N77.8 frequency band and the N79.5 frequency band. In addition, because the S parameter curve comprises 2 resonance points, under the same S parameter, the covered frequency range is wider, and the broadband characteristic can be realized.

The series feed antenna that this application embodiment provided, because including at least one radiation paster, a plurality of metallization hole and at least one gap in this antenna structure, through the region that a plurality of metallization holes formed to and the gap, unite the radiation paster of second base plate upper surface, form the working method of double resonance, and then can realize the broadband characteristic, and simple structure, area occupied is little.

Optionally, in some embodiments, the antenna is a standing wave antenna.

The standing wave in the embodiment of the present application may refer to two types of waves with the same frequency and opposite transmission directions, and one distribution state is formed along the transmission line. One of the waves may be a reflected wave of the other wave.

In a specific example of the technical solution provided by the present application, the adopted antenna is a standing wave antenna, which can avoid beam dispersion, thereby reducing system processing cost and complexity of algorithm processing.

Optionally, in some embodiments, the at least one slot 322 corresponds to the at least one radiating patch 331, including: the at least one slot 322 corresponds one-to-one to the at least one radiating patch 331; or each of the at least one slot 322 corresponds to at least one radiating patch 331; or each of the at least one radiation patches 331 corresponds to at least one slot 322.

The number corresponding relationship between the at least one slot 322 and the at least one radiation patch 331 is not limited in the embodiment of the present application, for example, if the at least one slot 322 is k slots and the at least one patch is j patches, the k slots may correspond to the j patches one to one; alternatively, each of the k slots may correspond to at least one of the j tiles; alternatively, each of the j radiation patches may correspond to at least one of the k slots.

Optionally, in some embodiments, the at least one radiating patch covers the at least one aperture.

The coverage here may be complete coverage or partial coverage, and is not limited. For example, each of the at least one radiating patches may completely cover the one or more apertures; alternatively, each of the at least one radiating patches may partially cover the one or more slots; alternatively, a portion of the at least one radiating patch may completely cover the one or more apertures; alternatively, a portion of the at least one radiating patch may partially cover the one or more apertures.

Illustratively, as shown in fig. 3 (c), each of the at least one radiation patch may cover one slot, for example, the radiation patch 331a may cover the slot 322a, the radiation patch 331b may cover the slot 322b, the radiation patch 331c may cover the slot 322c, and the radiation patch 331d may cover the slot 322 d.

In some embodiments, each of the at least one radiating patch may cover a plurality of slots, for example, as shown in fig. 5 (a), a top view of a series fed antenna provided for another embodiment of the present application. Wherein the radiation patch 331a may cover the slots 322a and 322b and the radiation patch 331c may cover the slots 322c and 322 d.

In some embodiments, a portion of at least one of the radiating patches may not completely cover at least one slot, as shown in fig. 5 (b), which provides a top view of a series fed antenna according to another embodiment of the present application. Referring to fig. 5 (b), in which a part of the radiation patches does not completely cover the slot, for example, the radiation patch 331a may not completely cover the slot 322a, the radiation patch 331b may not completely cover the slot 322b, and the radiation patch 331c may not completely cover the slot 322 c.

According to the series feed antenna provided by the embodiment of the application, as the at least one radiating patch covers the at least one slot, the at least one slot can pass through a signal emitted by the excitation source, so that the passed signal is coupled to the radiating patch, and a broadband characteristic is better realized.

The excitation source in this application embodiment can launch the signal, for example, can be for the power supply chip, also can be the bluetooth chip, still can be the WIFI chip, and this application does not do specific limitation to this, as long as the chip that can launch the signal all can use this application.

Optionally, in some embodiments, the region is a surrounding region formed by the plurality of metalized holes, and the SIW vias are formed within the surrounding region.

The surrounding region in the embodiment of the present application may be a closed surrounding region, or may be a semi-closed surrounding region, which may be referred to as a semi-surrounding region, for example. As shown by the semi-enclosed surrounding area formed by the dashed lines around the plurality of metallized holes 312 in fig. 3 (c), a SIW channel can be formed in the area, and the SIW channel can confine the signal emitted by the excitation source to the inside of the substrate.

It should be noted that the semi-surrounding region in the embodiment of the present application may refer to a region formed by a dotted line around the plurality of metalized holes 312, which may be understood as a region approximately shaped like a "door" so that a signal emitted by an excitation source may enter the semi-closed region.

The SIW channel in the embodiment of the present application is located in the surrounding area formed by the plurality of metallized holes, and the SIW channel can confine the signal emitted by the excitation source to the inside of the substrate, so that the loss of the signal can be reduced.

Optionally, in some embodiments, the pitch of adjacent metallization holes of the plurality of metallization holes is equal.

The spacing between adjacent metallized holes in the plurality of metallized holes in the embodiment of the present application is equal, as shown in (c) in fig. 3, for example, the plurality of metallized holes in the embodiment of the present application may be set based on a certain preset threshold, and the spacing between adjacent metallized holes may be set to the preset threshold.

It will be appreciated that ideally the spacing between adjacent metallised holes may be equal but may also allow for design process tolerances.

In some embodiments, the pitch of adjacent metallized holes in the plurality of metallized holes may also be different, as shown in fig. 6, which is a top view of a series fed antenna provided in another embodiment of the present application. Referring to fig. 6, it can be seen that the pitches of adjacent metallized holes are not all a fixed value.

The above describes that the area formed by the plurality of metallized holes, and the slot, in combination with the radiating patch on the upper surface of the second substrate, can achieve a broadband characteristic. In some cases, the side lobes radiated by the radiating patches are higher in energy, and therefore, in order to achieve a low side lobe, it can be achieved by different measures, which will be described in detail below.

Optionally, in some embodiments, the at least one slit 322 includes a plurality of slits, the plurality of slits are arranged in a vertical direction, the vertical direction is a direction of the first side of the second metal medium 321, and areas of the plurality of slits are different.

The vertical direction in the embodiment of the present application may be a direction of a first side of the second metal medium 321, and the first side in the present application may be a long side or a short side of the second metal medium 321, and a y-axis shown in fig. 3 (c) is a direction of the long side of the second metal medium 321, that is, the direction of the y-axis may be the vertical direction in the present application. Further, on the premise that the second metal medium has a certain thickness (not shown in fig. 3 (c)), the thickness may be understood as the height of the second metal medium, and at this time, the first side is still the long side or the short side of the second metal medium.

In some embodiments, the vertical direction may also be referred to as a direction of an area where a plurality of metalized holes are formed. For example, the region direction may be a direction of a y-axis shown in (c) in fig. 3.

The difference in the areas of the plurality of slits in the embodiment of the present application may mean that the areas of any two slits are different, or may mean that the areas of at least two slits in the plurality of slits are different, which is not limited.

Optionally, in some embodiments, the areas of the plurality of slits are such that the difference between the main lobe energy and the side lobe energy radiated by the at least one radiation patch is greater than or equal to a first preset threshold.

Specifically, in the embodiment of the present application, the difference between the main lobe energy and the side lobe energy radiated by at least one radiation patch may be greater than or equal to a first preset threshold by setting the areas of the plurality of slits to be different.

Exemplarily, as shown in (c) of fig. 3, 4 slits, respectively, a slit 322a, a slit 322b, a slit 322c, and a slit 322d are illustrated. The areas of the 4 slits may be different, and the areas of at least two slits included in the 4 slits may be different, for example, the areas of the slit 322a and the slit 322b are different.

Of course, the areas of the 4 slits may all be different, or the areas of the 4 slits may be the same in pairs, where the same in pairs means that the plurality of slits include a plurality of groups of slits, and the areas of the two slits included in each group of slits in the plurality of groups of slits are the same. For example, the areas of the slit 322a, the slit 322b, the slit 322c, and the slit 322d are all different; alternatively, the areas of the slit 322a and the slit 322d are the same, and the areas of the slit 322b and the slit 322c are the same.

In the case where the areas of the 4 slits are the same two by two, it may be set that the areas of each two slits symmetrical along the central axis in the horizontal direction, which may be the x-axis in (c) in fig. 3, are the same as shown in (c) in fig. 3, and the areas of the slits 322a and 322d may be the same and the areas of the slits 322b and 322c may be the same.

Similarly, if the series antenna includes 6 or more slots, the two slots symmetric to the central axis in the horizontal direction may have the same area, and will not be described herein again.

In the embodiment of the application, the difference value of the main lobe energy and the side lobe energy radiated by the radiation patch can be adjusted by setting different areas of the plurality of gaps. Fig. 7 is a schematic diagram of energy radiated by the radiation patch according to the embodiment of the present application.

In fig. 7, a main polarized beam and a cross polarized beam are shown, the direction radiated by the main polarized beam in the embodiment of the present application may refer to the maximum radiation direction of the electric field intensity, the direction radiated by the cross polarized beam is the direction perpendicular to the radiation direction of the main polarized beam, and the cross polarization is generally not desirable.

Generally, the larger the difference between the radiated energy of the main polarized beam and the cross polarized beam, the better, so that a low side lobe can be achieved.

The first preset threshold in the embodiment of the present application may be set according to a process requirement, or may be set based on factory settings, which is not limited.

The value of m1 shown in fig. 7 may be a main lobe energy value radiated by the radiation patch, and the value of m2 may be a side lobe energy value radiated by the radiation patch, assuming that the first preset threshold is set to 18dB, i.e., the difference between the main lobe energy and the side lobe energy radiated by the radiation patch is greater than or equal to 18 dB. The difference between the main lobe energy and the side lobe energy radiated by the patch is 18dB for explanation, if the difference between the main lobe energy and the side lobe energy radiated by the desired radiation patch is 18dB, the ratio of the excitation amplitude can be set to be approximately 0.18:0.32 (assuming that there are 4 antenna units), and based on this, the desired difference between the main lobe energy and the side lobe energy can be achieved by adjusting the areas of a plurality of slits, thereby realizing a low side lobe.

Specifically, the adjustment may be made based on the rule that the larger the gap area, the stronger the energy radiated.

It should be understood that the above numerical values are only examples, and other numerical values are also possible, and the present application should not be particularly limited.

It should also be understood that the shape of the slit in the embodiment of the present application may not be limited to that shown in (c) in fig. 3, and for example, may also be a circle, an ellipse, a square, or other irregular shape, and the like, and the present application is not particularly limited thereto.

Optionally, in some embodiments, the at least one slit 322 comprises a plurality of slits that are offset differently relative to the center of the region.

The difference in the offsets of the plurality of slits with respect to the center of the area formed by the plurality of metallization holes in the embodiment of the present application may mean that any two slits have different offsets with respect to the center of the area formed by the plurality of metallization holes, or may mean that at least two slits among the plurality of slits have different offsets with respect to the center of the area formed by the plurality of metallization holes, and is not limited.

Optionally, in some embodiments, the plurality of slits are offset with respect to the center of the region such that a difference between a main lobe energy and a side lobe energy radiated by the at least one radiating patch is greater than or equal to a first preset threshold.

Specifically, in the embodiment of the present application, the offset of the plurality of slits with respect to the center of the region may be set to be different, so that the difference between the main lobe energy and the side lobe energy radiated by at least one radiation patch is greater than or equal to the first preset threshold.

Exemplarily, as shown in (c) of fig. 3, 4 slits, respectively, a slit 322a, a slit 322b, a slit 322c, and a slit 322d are illustrated. The offset of the 4 slits with respect to the center of the area may be different, and the offset of at least 2 slits among the 4 slits with respect to the center of the area may be different, for example, the offset of each of the slit 322a and the slit 322b with respect to the center of the area may be different.

Of course, the offsets of the 4 slits with respect to the center of the region may all be different, or the offsets of the 4 slits with respect to the center of the region may be the same two by two. For example, the offsets of the slits 322a, 322b, 322c, and 322d with respect to the center of the area are all different; alternatively, the slits 322a and 322d have the same offset from the center of the region, and the slits 322b and 322c have the same offset from the center of the region.

The offset of the plurality of slits from the center of the region in the embodiment of the present application may refer to the offset of the center of the slit from the center of the region, as the values of r, s, t, and u shown in (c) in fig. 3.

In the case where the offsets of the 4 slits with respect to the center of the region are the same two by two, it may be that the offsets of each two slits symmetrical along the central axis in the horizontal direction with respect to the center of the region are the same two by two as shown in (c) of fig. 3, the central axis may be the x-axis in (c) of fig. 3, the offsets of the slits 322a and 322d with respect to the center of the region may be the same two, and the offsets of the slits 322b and 322c with respect to the center of the region may be the same two.

Similarly, if the series-fed antenna includes 6 or more slots, the offsets of every two slots symmetrical along the central axis in the horizontal direction with respect to the center of the area may be the same two by two, and will not be described herein again.

In the embodiment of the present application, the difference between the main lobe energy and the side lobe energy radiated by the radiation patch can be adjusted by setting the difference in the offsets of the plurality of slits with respect to the center of the region. For example, assume that the first preset threshold is set to 18dB, i.e., the difference between the main lobe energy and the side lobe energy radiated by the radiating patch is greater than or equal to 18 dB. Taking the difference between the main lobe energy and the side lobe energy radiated by the patch as 18dB as an example for explanation, if the difference between the main lobe energy and the side lobe energy radiated by the desired radiating patch is 18dB, the ratio of the excitation amplitude can be set to be approximately 0.18:0.32 (assuming that there are 4 antenna elements), and based on this, the desired difference between the main lobe energy and the side lobe energy can be achieved by adjusting the offset of the slot relative to the center of the area, thereby realizing low side lobe.

In particular, the adjustment may be based on the rule that the greater the offset of the slit with respect to the center of the region, the stronger the energy radiated.

It is understood that the desired difference between the main lobe energy and the side lobe energy radiated by the radiation patch can be achieved by setting the difference of the offsets of the plurality of slits with respect to the center of the region alone, or the desired difference between the main lobe energy and the side lobe energy radiated by the radiation patch can be achieved by combining the difference of the areas of the plurality of slits, which is not particularly limited in this application.

Optionally, in some embodiments, the at least one radiating patch comprises a plurality of radiating patches that differ in area.

The difference in the areas of the plurality of radiation patches in the embodiment of the present application may mean that the areas of any two radiation patches are different, or that the areas of at least two radiation patches in the plurality of radiation patches are different, which is not limited.

Optionally, in some embodiments, the areas of the plurality of radiation patches are such that the difference between the main lobe energy and the side lobe energy radiated by the at least one radiation patch is greater than or equal to a first preset threshold.

Specifically, in the embodiment of the present application, the areas of the plurality of radiation patches may be set to be different, so that the difference between the main lobe energy and the side lobe energy radiated by at least one radiation patch is greater than or equal to a first preset threshold.

Illustratively, as shown in fig. 3 (c), 4 patches are shown, namely, a radiation patch 331a, a radiation patch 331b, a radiation patch 331c, and a radiation patch 331 d. The areas of the 4 radiation patches may be different, and the areas of at least 2 patches in the 4 radiation patches may be different, for example, the areas of the radiation patch 331a and the radiation patch 331b are different.

Of course, the areas of the 4 radiation patches may all be different, or the areas of the 4 radiation patches may be the same two by two. For example, the areas of the radiation patches 331a, 331b, 331c, and 331d may all be different; alternatively, the areas of the radiation patches 331a and 331d may be the same, and the areas of the radiation patches 331b and 331c may be the same.

In the case where the areas of the 4 radiation patches are two by two, the areas of each two radiation patches symmetrical along the central axis in the horizontal direction, which may be the x-axis in (c) in fig. 3, may be the same as shown in (c) in fig. 3, the areas of the radiation patch 331a and the radiation patch 331d may be the same, and the areas of the radiation patch 331b and the radiation patch 331c may be the same.

Similarly, if the series feed antenna includes 6 or more radiation patches, the areas of every two radiation patches symmetrical along the central axis in the horizontal direction may also be the same, and details are not repeated here.

In the embodiment of the present application, the shape of the radiation patch may not be limited to the rectangle shown in (c) in fig. 3, for example, it may also be a circle, an ellipse, a square, or other irregular shape, and the like, which is not particularly limited in this application.

In the embodiment of the application, the difference value of the main lobe energy and the side lobe energy radiated by the radiation patches can be adjusted by setting different areas of the plurality of radiation patches. For example, assume that the first preset threshold is set to 18dB, i.e., the difference between the main lobe energy and the side lobe energy radiated by the radiating patch is greater than or equal to 18 dB. The difference between the main lobe energy and the side lobe energy radiated by the patch is 18dB for explanation, if the difference between the main lobe energy and the side lobe energy radiated by the desired radiation patch is 18dB, the ratio of the excitation amplitude can be set to be approximately 0.18:0.32 (assuming that there are 4 antenna elements), and based on this, the desired difference between the main lobe energy and the side lobe energy can be achieved by adjusting the area of each radiation patch, thereby realizing a low side lobe.

Specifically, the adjustment may be made based on the rule that the shorter the length of the patch, the stronger the energy radiated.

It will be appreciated that the desired difference in main and side lobe energies radiated by the radiating patches can be achieved by providing a plurality of radiating patches with different areas, alone or in combination with the above-mentioned differences in offsets of the plurality of apertures relative to the center of the region and/or differences in areas of the plurality of apertures.

Specifically, the desired difference between the main lobe energy and the side lobe energy radiated by the radiation patches may be achieved by combining the difference in the areas of the plurality of radiation patches and the difference in the offsets of the plurality of slits with respect to the center of the region, the desired difference between the main lobe energy and the side lobe energy radiated by the radiation patches may be achieved by combining the difference in the areas of the plurality of radiation patches and the difference in the areas of the plurality of slits, the desired difference between the main lobe energy and the side lobe energy radiated by the radiation patches may be achieved by combining the difference in the areas of the plurality of radiation patches, the difference in the offsets of the plurality of slits with respect to the center of the region, and the difference in the areas of the plurality of slits, which is not particularly limited in this application.

Optionally, in some embodiments, the at least one radiating patch comprises a plurality of radiating patches, a center distance between different patches of the plurality of radiating patches being an integer multiple of half of a waveguide wavelength of the channel, wherein the channel is a waveguide channel.

In this embodiment, if the waveguide channel is the SIW channel, the center-to-center distance between different patches in the plurality of radiating patches may be an integer multiple of half of the waveguide wavelength of the SIW channel. For example, as shown in fig. 3 (c), 4 patches, respectively, a patch 331a, a patch 331b, a patch 331c, and a patch 331d are shown. The center distance between the patches 331a and 331b may be an integer multiple of half of the waveguide wavelength of the SIW channel, that is, the value of m shown in (c) in fig. 3 may be an integer multiple of half of the waveguide wavelength of the SIW channel; similarly, the center-to-center distance between patches 331b and 331c can be an integer multiple of half of the waveguide wavelength of the SIW channel; the center-to-center distance between patches 331c and 331d may be an integer multiple of half of the waveguide wavelength of the SIW channel.

It is understood that the waveguide wavelength of the SIW channel in the embodiment of the present application is not a fixed value, and the waveguide wavelength of the SIW channel may be related to the size of the metalized hole and the distance between the metalized holes.

The waveguide wavelength in the embodiments of the present application may refer to a wavelength of an electromagnetic wave propagating in a waveguide channel.

In general, assuming that the waveguide wavelength of the SIW channel is h, the center-to-center distance between different patches may be 1 or 2 times 0.5 h.

Optionally, in some embodiments, as shown in fig. 8, a schematic diagram of a series-fed antenna is provided for another implementation of the present application. The at least one radiation patch comprises a plurality of radiation patch groups distributed in the vertical direction, the distance between different radiation patch groups in the plurality of radiation patch groups is a second preset threshold, and the vertical direction is the direction of the first side edge of the second metal medium.

The distance between different radiation patch groups in the multiple radiation patch groups in the embodiment of the present application is the second preset threshold, which may mean that the distance between any two adjacent radiation patch groups is the second preset threshold, or that the distance between at least two adjacent radiation patch groups in the multiple radiation patch groups is the second preset threshold, and is not limited.

The vertical direction in the embodiment of the present application may be a direction of a first side of the second metal medium 321, and the first side in the present application may be a long side or a short side of the second metal medium 321, and a y-axis shown in fig. 8 is a long side of the second metal medium 321, that is, the direction of the y-axis may be the vertical direction in the present application. Specifically, reference may be made to the above description of the "vertical direction", which is not described herein again.

In some embodiments, the vertical direction in the embodiments of the present application may also be referred to as a region direction in which a plurality of metallized holes are formed, in other words, taking a radiation patch group as an example, a direction in which a plurality of metallized holes surrounded around one radiation patch group shown in fig. 8 is shown in the drawing is the vertical direction, that is, a direction of the y axis shown in fig. 8 may be the vertical direction in the present application.

In this embodiment of the application, the second preset threshold may be half of the waveguide wavelength of the SIW channel, and the center distance between different patch groups of the multiple radiation patch groups may be half of the waveguide wavelength of the SIW channel, that is, the value of n shown in the figure may be half of the waveguide wavelength of the SIW channel.

In addition, the second preset threshold in the embodiment of the present application may be set according to a process requirement, or may be set based on a factory setting, which is not limited.

Optionally, in some embodiments, as shown in fig. 9, a schematic diagram of a series-fed antenna provided for another implementation of the present application is provided.

The radiating patches are provided with parasitic patches 340 on the upper and lower sides in the direction of the first side of the second metal medium.

The first side of the second metal medium 321 in the embodiment of the present application may be a long side or a short side of the second metal medium 321, and a y-axis shown in fig. 9 is a long side of the second metal medium 321, that is, the parasitic patches 340 may be disposed on upper and lower sides of the radiation patch 331 along a direction of the y-axis.

It should be understood that in the embodiment of the present application, the parasitic patch 340 may be disposed on the upper side or the lower side of the radiation patch 331 along the y-axis direction, which is not particularly limited in the present application.

In some implementations, the direction of the first side of the second metal medium in the embodiment of the present application may also be referred to as a region direction formed by the plurality of metalized holes, where the region direction may be a direction of a y-axis shown in fig. 9, and the parasitic patch 340 may be disposed on an upper side and/or a lower side in the region direction, without limitation.

The parasitic patch 340 in the embodiment of the present invention may be the same as or similar to the radiation patch 331, for example, a copper sheet or a copper foil, or other conductive material, without limitation.

According to the technical scheme provided by the embodiment of the application, as the parasitic patches are arranged on the upper side and the lower side of the radiation patch in the direction of the first side edge of the second metal medium, the broadband characteristic can be further realized through the area formed by the plurality of metalized holes, the gap, the radiation patch and the parasitic patches.

Optionally, in some embodiments, as shown in fig. 10, the antenna may further include a third substrate 350.

A third substrate 350 is disposed above the radiation patches 331, and at least one radiation patch 351 is disposed on an upper surface of the third substrate 350.

The radiation patch 351 in the embodiment of the present invention may also be a copper sheet or a copper foil, or other conductive material, which is not particularly limited in the present invention.

The at least one radiation patch 351 in the embodiment of the present application may be referred to as a secondary radiation patch, and as described above, the secondary radiation patch and the primary radiation patch are opposite, that is, the distance between the at least one radiation patch on the third substrate and the at least one slot 322 is relatively longer than the distance between the at least one radiation patch 331 on the second substrate and the at least one slot 322, and thus, the at least one radiation patch 351 on the third substrate may be referred to as a secondary radiation patch; the distance between the at least one radiation patch 331 and the at least one slot 322 on the second substrate is closer to the distance between the at least one radiation patch and the at least one slot 322 on the third substrate, and thus, the at least one radiation patch 331 on the second substrate may be referred to as a main radiation patch.

In the embodiment of the present application, the plurality of metalized holes 312 form a region from the first metal medium 311 to the second metal medium 321, so that energy emitted by the excitation source can be bound to the inside of the substrate, meanwhile, the energy emitted by the excitation source can pass through at least one slot 322 arranged in the second metal medium 321 in the region, and a signal passing through the at least one slot 322 can be coupled to the radiation patch 331 and the radiation patch 351, so as to form a multi-resonance working mode, and realize 3 in-band resonance points and broadband characteristics.

According to the scheme provided by the embodiment of the application, the third substrate and the radiation patch positioned on the third substrate are arranged in the antenna structure, and a multi-resonance working mode is formed by combining the radiation patch on the upper surface of the second substrate and the radiation patch on the upper surface of the third substrate through the area formed by the plurality of metalized holes and the gap, so that the broadband characteristic can be further realized.

In some embodiments, based on the structures of fig. 3 to 10, the present application may also employ a series-fed traveling wave antenna to achieve broadband characteristics and low sidelobes.

The embodiment of the present application further provides a communication device 1100 including any one of the antennas of the series-fed antenna 300 mentioned above.

The embodiment of the present application further provides a method 1200 for manufacturing a series-fed antenna, where the method 1200 may include steps 1210 to 1220.

1210, a first metal medium is disposed on a lower surface of the first substrate.

1220, a second substrate is arranged above the first substrate, a second metal medium is arranged between the second substrate and the first substrate, a plurality of metalized holes are formed in the second metal medium, the first substrate and the first metal medium, an area from the first metal medium to the second metal medium is formed through the metalized holes, at least one gap is arranged in the second metal medium, the at least one gap is located in the area, at least one radiation patch is arranged on the upper surface of the second substrate, and the at least one gap corresponds to the at least one radiation patch.

Optionally, in some embodiments, the at least one slot corresponds to the at least one radiating patch, including: the at least one slot corresponds to the at least one radiation patch one by one; or each of the at least one slot corresponds to at least one radiating patch; or each of the at least one radiating patch corresponds to at least one slot.

Optionally, in some embodiments, the at least one radiating patch covers the at least one aperture.

Optionally, in some embodiments, the region is a surrounding region formed by the plurality of metalized holes, and the SIW vias are formed within the surrounding region.

Optionally, in some embodiments, the pitch of adjacent metallization holes of the plurality of metallization holes is equal.

Optionally, in some embodiments, the at least one slit includes a plurality of slits, the plurality of slits are arranged in a vertical direction, the vertical direction is a direction of the first side edge of the second metal medium, and areas of the plurality of slits are different.

Optionally, in some embodiments, the areas of the plurality of slits are such that the difference between the main lobe energy and the side lobe energy radiated by the at least one radiation patch is greater than or equal to a first preset threshold.

Optionally, in some embodiments, the at least one slit comprises a plurality of slits, the plurality of slits differing in offset relative to a center of the region.

Optionally, in some embodiments, the plurality of slits are offset with respect to the center of the region such that a difference between a main lobe energy and a side lobe energy radiated by the at least one radiating patch is greater than or equal to a first preset threshold.

Optionally, in some embodiments, the at least one radiating patch comprises a plurality of radiating patches that differ in area.

Optionally, in some embodiments, the areas of the plurality of radiation patches are such that the difference between the main lobe energy and the side lobe energy radiated by the plurality of radiation patches is greater than or equal to a first preset threshold.

Optionally, in some embodiments, the at least one radiating patch comprises a plurality of radiating patches, a center distance between different patches of the plurality of radiating patches being an integer multiple of half of a waveguide wavelength of the channel, wherein the channel is a waveguide channel.

Optionally, in some embodiments, the at least one radiation patch includes a plurality of radiation patch groups distributed in a vertical direction, a distance between different radiation patch groups in the plurality of radiation patch groups is a second preset threshold, and the vertical direction is a direction of the first side of the second metal medium.

Optionally, in some embodiments, the radiating patches are provided with parasitic patches on upper and lower sides in the direction of the first side of the second metal medium.

Optionally, in some embodiments, the method 1200 further comprises: and a third substrate is arranged above the radiation patches, and at least one radiation patch is arranged on the upper surface of the third substrate.

The embodiment of the present application further provides a radar including any one of the series-fed antennas 300 mentioned above.

The embodiment of the present application further provides a terminal, which may be a transportation means or an intelligent device, such as an unmanned aerial vehicle, an unmanned transport vehicle, a robot, an automobile, etc., wherein the terminal includes at least one radar, and the at least one radar includes any one of the series-fed antennas 300 described above.

In the several embodiments provided in the present application, it should be understood that the disclosed system and apparatus may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.