阅读说明：本技术 一种宽带5g毫米波通信基站天线 (Broadband 5G millimeter wave communication base station antenna ) 是由 丁大维 刘成 张海波 李国威 于 2021-09-13 设计创作，主要内容包括：本发明公开了一种宽带5G毫米波通信基站天线,通信基站天线包括：多层PCB结构层,带有切角的矩形驱动贴片、4个扇形的堆叠贴片、金属接地面、两个差分馈电网络、4根长铜柱和12根短铜柱；差分馈电网络设置在PCB结构层的第一层的下表面；金属接地面设置在PCB结构层的第二层的上表面；12根短铜柱穿过PCB结构层的第一层；4根长铜柱分别穿过PCB结构层的第一层、第二层和第三层；4个扇形的堆叠贴片均设置于PCB结构层的第七层的上表面；带有切角的矩形驱动贴片设置于PCB结构层的第三层的上表面。实现了宽带宽要求的同时,也实现了低增益波动和稳定的3-dB波束宽度,适用于未来的5G毫米波天线系统。(The invention discloses a broadband 5G millimeter wave communication base station antenna, which comprises: the PCB comprises a multilayer PCB structure layer, a rectangular driving patch with a cut angle, 4 fan-shaped stacked patches, a metal ground plane, two differential feed networks, 4 long copper columns and 12 short copper columns; the differential feed network is arranged on the lower surface of the first layer of the PCB structure layer; the metal ground plane is arranged on the upper surface of the second layer of the PCB structure layer; the 12 short copper columns penetrate through the first layer of the PCB structure layer; 4 long copper columns respectively penetrate through the first layer, the second layer and the third layer of the PCB structure layer; the 4 fan-shaped stacked patches are arranged on the upper surface of the seventh layer of the PCB structure layer; the rectangular driving patch with the cut corners is arranged on the upper surface of the third layer of the PCB structure layer. The broadband antenna realizes the requirement of broadband width, realizes low gain fluctuation and stable 3-dB beam width, and is suitable for the future 5G millimeter wave antenna system.)

1. A wideband 5G millimeter wave communication base station antenna, comprising: the PCB comprises a multilayer PCB structure layer, a rectangular driving patch with a cut angle, 4 fan-shaped stacked patches, a metal ground plane, two differential feed networks, 4 long copper columns and 12 short copper columns;

the differential feed network is arranged on the lower surface of the first layer of the PCB structure layer;

the metal ground plane is arranged on the upper surface of the second layer of the PCB structure layer;

the 12 short copper columns penetrate through the first layer of the PCB structure layer;

the 4 long copper columns respectively penetrate through the first layer, the second layer and the third layer of the PCB structure layer;

the 4 fan-shaped stacked patches are all arranged on the upper surface of the seventh layer of the PCB structure layer;

the rectangular driving patch with the cut corners is arranged on the upper surface of the third layer of the PCB structure layer.

2. A wideband 5G mm-wave communication base station antenna according to claim 1, wherein the seventh layer of the PCB structure layer is a Rogers RO4003 board of 6.92mm x 0.305 mm.

3. A wideband 5G mm wave communication base station antenna according to claim 1, wherein the fan-shaped stacked patch and the rectangular drive patch with cut corners are each copper with a thickness of 0.034 mm.

4. The broadband 5G millimeter wave communication base station antenna according to claim 1, wherein the third layer of the PCB structure layer is a Rogers RO4350 board of 6.92mm 0.102 mm.

5. A wideband 5G millimeter wave communication base station antenna according to claim 1, characterized in that the metal ground plane is copper with a thickness of 0.018 mm.

6. A wideband 5G mm-wave communications base station antenna according to claim 1, wherein the first layer of the PCB structure layer is a 6.92mm by 0.102mm Rogers RO4003 board.

7. The broadband 5G millimeter wave communication base station antenna according to claim 1, wherein the second layer of the PCB structure layer is a Rogers4450F board of 6.92mm by 0.305 mm.

Technical Field

The invention relates to the field of mobile communication, in particular to a broadband 5G millimeter wave communication base station antenna.

Background

With the development of the fifth generation mobile communication, the millimeter wave technology can meet the requirements of 10Gbit/s peak rate and bandwidth in the 5G era due to the advantages of large bandwidth, high rate and the like. Millimeter wave communication technology has become one of the hot spots of 5G research, and plays an important role in short-distance communication 5G small base station backhaul. At present, the 5G millimeter wave technology is still in a test stage and is not formally commercialized.

The 5G millimeter wave broadband antenna technology is one of the core technologies of the 5G millimeter wave system. The 5G millimeter wave broadband antenna technology has been widely concerned by academia and industry. Although the requirements of high speed and wide bandwidth of 5G communication can be met, the antenna has short wavelength, is extremely easy to block, has great loss in transmission in the surrounding environment, and has great influence on the reliability and signal coverage of communication, so that the radiation pattern of the 5G millimeter wave antenna is unstable, the fluctuation of gain is large, and the requirements of stability of the broadband pattern and gain are difficult to meet. Therefore, the small gain fluctuation in the broadband and the stable beam width are the core technical indexes of the design of the 5G millimeter wave antenna.

Disclosure of Invention

In view of the above, the present invention has been made to provide a wideband 5G millimeter wave communication base station antenna that overcomes or at least partially solves the above problems.

According to an aspect of the present invention, there is provided a wideband 5G millimeter wave communication base station antenna, the wideband 5G millimeter wave communication base station antenna comprising: the PCB comprises a multilayer PCB structure layer, a rectangular driving patch with a cut angle, 4 fan-shaped stacked patches, a metal ground plane, two differential feed networks, 4 long copper columns and 12 short copper columns;

the differential feed network is arranged on the lower surface of the first layer of the PCB structure layer;

the metal ground plane is arranged on the upper surface of the second layer of the PCB structure layer;

the 12 short copper columns penetrate through the first layer of the PCB structure layer;

the 4 long copper columns respectively penetrate through the first layer, the second layer and the third layer of the PCB structure layer;

the 4 fan-shaped stacked patches are all arranged on the upper surface of the seventh layer of the PCB structure layer;

the rectangular driving patch with the cut corners is arranged on the upper surface of the third layer of the PCB structure layer.

Optionally, the seventh layer of the PCB structure layer is a 6.92mm by 0.305mm Rogers RO4003 board.

Optionally, the fan-shaped stacked patch and the rectangular driving patch with cut corners are both copper with a thickness of 0.034 mm.

Optionally, the third layer of the PCB structure layer is a Rogers RO4350 board of 6.92mm 0.102 mm.

Optionally, the metal ground plane is copper with a thickness of 0.018 mm.

Optionally, the first one of the PCB structure layers is a 6.92mm by 0.102mm Rogers RO4003 board.

Optionally, the second layer of the PCB structure layer is a 6.92mm by 0.305mm Rogers4450F board.

The invention provides a broadband 5G millimeter wave communication base station antenna, which comprises: the PCB comprises a multilayer PCB structure layer, a rectangular driving patch with a cut angle, 4 fan-shaped stacked patches, a metal ground plane, two differential feed networks, 4 long copper columns and 12 short copper columns; the differential feed network is arranged on the lower surface of the first layer of the PCB structure layer; the metal ground plane is arranged on the upper surface of the second layer of the PCB structure layer; the 12 short copper columns penetrate through the first layer of the PCB structure layer; the 4 long copper columns respectively penetrate through the first layer, the second layer and the third layer of the PCB structure layer; the 4 fan-shaped stacked patches are all arranged on the upper surface of the seventh layer of the PCB structure layer; the rectangular driving patch with the cut corners is arranged on the upper surface of the third layer of the PCB structure layer. The broadband antenna realizes the requirement of broadband width, realizes low gain fluctuation and stable 3-dB beam width, and is suitable for the future 5G millimeter wave antenna system.

The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a front view of a 5G millimeter wave communication base station antenna with a stable directional diagram according to an embodiment of the present invention;

FIG. 2 is a diagram of a fan-shaped stacked patch configuration of the present invention;

FIG. 3 is a diagram of a rectangular patch of the present invention with cut corners;

FIG. 4 is a diagram of a differential feed network architecture;

FIG. 5 is a top view of the physical structure of the antenna;

FIG. 6 is a bottom view of the physical structure of the antenna;

FIG. 7 is an antenna element S parameter;

FIG. 8 illustrates antenna element gain;

fig. 9 is a schematic diagram of the 3db beamwidth of the antenna element.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

The terms "comprises" and "comprising," and any variations thereof, in the present description and claims and drawings are intended to cover a non-exclusive inclusion, such as a list of steps or elements.

The technical solution of the present invention is further described in detail with reference to the accompanying drawings and embodiments.

The high-isolation base station antenna facing 5G millimeter wave communication is composed of a multilayer PCB structure 100, a rectangular driving patch 110 with cut corners, four fan-shaped stacked patches 120, a metal ground plane 130, two differential feed networks 140, four long copper columns 150 penetrating through three layers of PCBs and 12 short copper columns 160 penetrating through one layer of PCB structure; the method is characterized in that: the fan-shaped stacked patches 120 are copper with a thickness of 0.034mm, and are located on the upper surface of the seventh Sub 7 layer of the dielectric substrate, as shown in fig. 2, the Sub 7 layer is a Rogers RO4003 plate with a thickness of 6.92mm by 0.305 mm; the rectangular patch 110 with the cut corners is copper with a thickness of 0.034mm and is located on the upper surface of the third Sub 3 layer, as shown in fig. 3, the Sub 3 layer is a Rogers RO4350 plate with a thickness of 6.92mm x 0.102 mm; the metal ground plane 130 is copper with a thickness of 0.018mm, and is located on the upper surface of the second layer Sub1, and the Sub1 layer is a 6.92mm 0.102mm Rogers RO4003 plate; the thickness of the differential feed network 140 is 0.018mm, as shown in fig. 4, and the differential feed network is located on the lower surface of the first layer Sub 1; the four long copper pillars 150 and 12 short copper pillars 160, all 0.2mm in diameter, run through Sub1, Sub 2 and Sub 3 and Sub1 respectively, and the Sub 2 layer is a 6.92mm by 0.305mm Rogers4450F plate.

The working principle of the invention is as follows: the 5G millimeter wave communication base station antenna with the stable directional diagram is a base station antenna unit 100 working at 24.25-27.5 GHz.

The differential feed network 140 is located on the lower surface of the Sub1 layer, and feeds through 1 port, and connects the rectangular patch 110 with the cut angle through four long copper columns 150 to complete feeding, and at this time, a first resonance point is formed. Since the two ports of the differential feed network 140 are 180 ° out of phase, a high port isolation can be achieved.

The fan-shaped stacked patch 120 is positioned on the upper surface of the Sub 7 layer, a second resonance point is formed by radiation coupling of the rectangular patch 110 with the cut angle, and the two resonance points jointly form an operating bandwidth of 24.25-27.5 GHz.

The simulation diagram and the physical diagram of the 5G millimeter wave communication base station antenna with the stable directional diagram are shown in the following figures 1-6, the measurement of the antenna performance in a microwave darkroom is completed, and the actual measurement result is shown in the following figures 7-8:

as shown in fig. 7 to 9 below, the S-parameters of the 5G millimeter wave communication base station antenna with a stable directional pattern are shown in fig. 7, the reflection coefficient meets the requirement at 24.25 to 27.5GHz, and the port isolation of the whole antenna unit is as high as 34dB over the whole operating frequency band, thereby achieving high port isolation. The gain of the antenna unit in the working frequency band is shown in fig. 8, the gain can be realized in the bandwidth more than 5.7dBi, and the gain fluctuation is less than 1.1 dB. The 3dB beamwidth of the antenna unit in the operating band is shown in fig. 9, and the beamwidth is 75 ± 4 °.

Has the advantages that:

the invention discloses a 5G millimeter wave communication base station antenna with a stable directional diagram. The multi-layer PCB antenna packaging technology is adopted, so that the advantages of low cost and simple process are brought; and the differential feed network is adopted, so that the advantages of high port polarization isolation and low cross polarization are brought. The design innovation is as follows: the broadband antenna realizes the requirement of wide bandwidth by designing a new stackedpatch structure, and obtains gain fluctuation lower than 1.1dB and 3dB beam width of 75 +/-4 degrees.

The above embodiments are provided to further explain the objects, technical solutions and advantages of the present invention in detail, it should be understood that the above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the scope of the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.