阅读说明：本技术 功分器 (Power divider ) 是由 桂杰 刘震 蔡隽 张健 于 2021-10-11 设计创作，主要内容包括：本申请提供了一种功分器,包括介质层和附着在介质层一侧的第一金属层以及附着在介质层另一侧的第二金属层,其中,第一金属层包括功分单元,该功分单元包括输入端口、第一输出端口和第二输出端口；第二金属层包括隔离单元,该隔离单元设置于第一输出端口和第二输出端口之间,当隔离单元被奇模激励时,以使隔离单元形成电壁,以对第一输出端口和第二输出端口的进行隔离,从而使功分器无需安装隔离电阻,即可工作在W波段,且第一输出端口和第二输出端口间仍具有高隔离度。(The application provides a power divider, which comprises a dielectric layer, a first metal layer attached to one side of the dielectric layer and a second metal layer attached to the other side of the dielectric layer, wherein the first metal layer comprises a power dividing unit, and the power dividing unit comprises an input port, a first output port and a second output port; the second metal layer comprises an isolation unit which is arranged between the first output port and the second output port, when the isolation unit is excited by an odd mode, the isolation unit forms an electric wall to isolate the first output port from the second output port, so that the power divider can work in a W wave band without installing an isolation resistor, and the first output port and the second output port still have high isolation.)

1. A power divider is characterized by comprising a dielectric layer, a first metal layer attached to one side of the dielectric layer and a second metal layer attached to the other side of the dielectric layer, wherein,

the first metal layer comprises a power division unit, and the power division unit comprises an input port, a first output port and a second output port;

the second metal layer includes an isolation cell disposed between the first output port and the second output port such that the isolation cell forms an electrical wall to isolate the first output port from the second output port when the isolation cell is excited by an odd mode.

2. The power divider of claim 1, wherein the power dividing unit further comprises a closed transmission line, and the input port, the first output port, and the second output port are connected via the closed transmission line;

the isolation unit is composed of a groove line part arranged on the second metal layer, the groove line part extends into the closed transmission line from the position between the first output port and the second output port, when a first output signal of the first output port and a second output signal of the second output port flow through the isolation unit from the closed transmission line, and the isolation unit is excited by an odd mode, the isolation unit forms an electric wall to isolate the first output port and the second output port.

3. The power divider of claim 2, wherein the slot line portion comprises a circular slot and a linear slot connected to each other, and the linear slot extends from the circular slot to the closed transmission line and extends into the closed transmission line from between the first output port and the second output port.

4. The power divider of claim 3, wherein an extension line of the central axis of the linear slot passes through the central point of the ring slot to divide the ring slot into a first part and a second part which are symmetrical;

after a target output signal flows through the linear slot from the closed transmission line, the target output signal is divided into a first target output signal and a second target output signal which are equal in amplitude and reverse, the first target output signal flows through a first part of the circular slot, the second target output signal flows through a second part of the circular slot, and the first target output signal and the second target output signal are offset at a first connection position of the first part and the second part of the circular slot so as to isolate the first output port and the second output port;

wherein the first connection point is a connection point far away from the linear slot, and the target output signal is the first output signal or the second output signal.

5. The power divider of claim 4, wherein the cross-sectional shape of the annular groove comprises a rectangular ring having a length of one quarter of an operating wavelength.

6. The power divider of claim 5, wherein the length of the linear slot is greater than one-third and less than one-half the length of the rectangular ring.

7. The power divider of claim 5, wherein the inner diameter of the rectangular ring is greater than one-tenth and less than one-ninth of the length of the rectangular ring.

8. The power divider of claim 5, wherein the width of the rectangular ring is greater than one third and less than one half the length of the rectangular ring.

9. The power divider of claim 5, wherein the linear slot extends into the closed transmission line for more than one fifth of the length of the rectangular loop and less than one fourth of the length of the rectangular loop.

10. The power divider of claim 4, wherein the closed transmission line is a circular transmission line, and an end of the linear slot far from the circular slot is located at a center of the circular transmission line.

Technical Field

The application relates to the technical field of communication, in particular to a power divider.

Background

The power divider is a very important microwave passive device in a wireless communication system, and has wide application in power divider array feed systems, power amplifiers and wireless local area networks. Common planar power splitters, such as Wilkinson power splitters, are widely used in millimeter wave integrated circuits due to their simple design and good amplitude and phase characteristics.

The Wilkinson power divider is mainly characterized in that an isolation resistor is added between two output ports, so that high isolation between the two output ports is realized. However, when it operates in a high frequency band, such as a W band (70-110GHz), since its size is reduced, a circuit layout is limited, and an isolation resistor cannot be mounted, resulting in poor isolation between two output ports.

Disclosure of Invention

The application provides a ware is divided to merit need not to install isolation resistor, can work in W wave band, and output port still has high isolation.

The technical scheme provided by the application is as follows:

the application provides a power divider, which comprises a dielectric layer, a first metal layer attached to one side of the dielectric layer and a second metal layer attached to the other side of the dielectric layer, wherein,

the first metal layer comprises a power division unit, and the power division unit comprises an input port, a first output port and a second output port;

the second metal layer includes an isolation cell disposed between the first output port and the second output port such that the isolation cell forms an electrical wall to isolate the first output port from the second output port when the isolation cell is excited by an odd mode.

In the power divider of the present application, the power dividing unit further includes a closed transmission line, and the input port, the first output port, and the second output port are connected by the closed transmission line;

the isolation unit is composed of a groove line part arranged on the second metal layer, the groove line part extends into the closed transmission line from the position between the first output port and the second output port, when a first output signal of the first output port and a second output signal of the second output port flow through the isolation unit from the closed transmission line, and the isolation unit is excited by an odd mode, the isolation unit forms an electric wall to isolate the first output port and the second output port.

In the power divider of the present application, the slot line portion includes a circular slot and a linear slot connected to each other, where the linear slot extends from the circular slot to the closed transmission line direction, and extends into the closed transmission line from between the first output port and the second output port.

In the power divider, an extension line of a central axis of the linear groove passes through a central point of the ring groove to divide the ring groove into a first part and a second part which are symmetrical;

after a target output signal flows through the linear slot from the closed transmission line, the target output signal is divided into a first target output signal and a second target output signal which are equal in amplitude and reverse, the first target output signal flows through a first part of the circular slot, the second target output signal flows through a second part of the circular slot, and the first target output signal and the second target output signal are offset at a first connection position of the first part and the second part of the circular slot so as to isolate the first output port and the second output port;

wherein the first connection point is a connection point far away from the linear slot, and the target output signal is the first output signal or the second output signal.

In the power divider of the present application, the cross-sectional shape of the ring groove includes a rectangular ring, and the length of the rectangular ring is one-quarter of the operating wavelength.

In the power divider of the present application, the length of the linear groove is greater than one third of the length of the rectangular ring and less than one half of the length of the rectangular ring.

In the power divider of the present application, an inner diameter of the rectangular ring is greater than one tenth of a length of the rectangular ring and less than one ninth of the length of the rectangular ring.

In the power divider of the present application, the width of the rectangular ring is greater than one third of the length of the rectangular ring and less than one half of the length of the rectangular ring.

In the power divider of the application, the length of the linear groove extending into the closed transmission line is greater than one fifth of the length of the rectangular ring and less than one fourth of the length of the rectangular ring.

In the power divider of the application, the closed transmission line is a circular ring transmission line, and the end part of the straight line groove, which is far away from the circular ring groove, is located at the circle center of the circular ring transmission line.

The beneficial effect of this application does: different from the prior art, the power divider provided by the application comprises a dielectric layer, a first metal layer attached to one side of the dielectric layer and a second metal layer attached to the other side of the dielectric layer, wherein the first metal layer comprises a power dividing unit, and the power dividing unit comprises an input port, a first output port and a second output port; the second metal layer comprises an isolation unit, the isolation unit is arranged between the first output port and the second output port, when the isolation unit is excited by an odd mode, the isolation unit forms an electric wall to isolate the first output port from the second output port, so that the power divider can work in a W wave band without installing an isolation resistor, and the first output port and the second output port still have high isolation.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, 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 application, 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 schematic structural diagram of a conventional power divider according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a power divider according to an embodiment of the present application;

FIG. 3 is a signal direction diagram of a rectangular ring slot provided in an embodiment of the present application;

fig. 4 is a schematic structural diagram of three test power dividers provided in the embodiment of the present application;

fig. 5 is a simulation graph of four power splitters provided in the embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. 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.

In the description of the present application, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. In order to simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Moreover, the present application may repeat reference numerals and/or letters in the various examples, such repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

In communication and radar systems, a power divider is one of important devices. The power divider is a device which divides one path of input signal energy into two paths or multiple paths of energy with equal or unequal outputs, or conversely synthesizes multiple paths of signal energy into one path of output, and is also called a combiner.

For ease of understanding, a conventional Wilkinson power divider is briefly described herein. As shown in fig. 1, the basic Wilkinson power divider includes three ports, an electromagnetic signal is input from port 1, and is output from port 2 and port 3 through an impedance transformation section, and the port 2 and the port 3 are isolated by an isolation resistor, wherein the impedances of the input and output ports are both Z0, the impedance of the isolation resistor is generally twice as large as Z0, and the lengths of two branch microstrip lines are both quarter of the operating wavelength. When this ware work is divided to traditional Wilkinson merit was in the low frequency channel (be less than Ka wave band), can realize the good isolation of two output ports through adding isolation resistor between port 2 and port 3, however, when this ware work is divided to traditional Wilkinson merit was in the high frequency channel, like during the W wave band, because the merit divides the ware structure size less, isolation resistor can't install, will lead to two output port isolation relatively poor. In order to solve the above problems, the present application adopts a technical scheme that a power divider is provided, which can operate in a W band without installing an isolation resistor, and has a high isolation between two input ports.

Referring to fig. 2, fig. 2 is a schematic structural diagram of a power divider according to an embodiment of the present disclosure. As shown in fig. 2, the power divider 1000 mainly includes a dielectric layer 100, a first metal layer attached to one side of the dielectric layer 100, and a second metal layer attached to the other side of the dielectric layer 100, where the first metal layer includes a power dividing unit 110, the power dividing unit 110 includes an input port 111, a first output port 113, and a second output port 114, the second metal layer includes an isolation unit 120, and the isolation unit 120 is disposed between the first output port 113 and the second output port 114, so that when the isolation unit 12 is excited by an odd mode, the isolation unit 120 forms an electrical wall to isolate the first output port 113 from the second output port 114.

It is easy to understand that, when the power divider 1000 operates in a high frequency band, the circuit size will be reduced, the circuit layout is limited, and the mutual coupling between the two output ports is severe, which affects the performance. The power divider provided by the application does not need to install isolation resistors between the output ports, and can directly isolate the output signals of the output ports through the isolation unit 120, so that the transmission lines connecting the two output ports can be randomly opened and bent so as to be connected with the next-stage circuit module, and the coupling operation between the transmission lines is smaller.

In some embodiments, the power splitting unit 110 further includes a closed transmission line 112, the input port 111, the first output port 113, and the second output port 114 are all connected to the closed transmission line 112, the isolation unit 120 is formed by a slot line portion 120 disposed on the second metal layer, the slot line portion 120 extends into the closed transmission line 112 from between the first output port 113 and the second output port 114, and when a first output signal of the first output port 113 and a second output signal of the second output port 114 flow through the isolation unit 120 from the closed transmission line 112, the isolation unit 120 is excited in an odd mode, so that the isolation unit 120 forms an electrical wall to isolate the first output port 113 from the second output port 114.

Specifically, in this embodiment, the power dividing unit 110 may be a modified Wilkinson halving power divider, and an electromagnetic wave may enter the power dividing unit 110 from the input port 111, be equally divided into two output signals with equal amplitude and equal phase, and be transmitted to the first output port 113 and the second output port 114 via the closed transmission line 112, so as to achieve a power dividing effect.

Specifically, the defective ground structure of the power divider 1000 is realized by providing the slot line portion 120 on the second metal layer.

In this embodiment, the first metal layer and the second metal layer are attached to the surface of the dielectric layer 100, and the isolation unit 120 is formed by opening a slot line on the second metal layer, so that the power divider provided by the present application has the advantages of lower cost, more compact and flexible structure, and the like due to the design of the planar transmission structure.

In some embodiments, the slot line portion 120 includes a circular slot 122 and a linear slot 121 connected to each other, and the linear slot 121 extends from the circular slot 122 toward the circular transmission line 112 and extends into the closed transmission line 112 from between the first output port 113 and the second output port 114 to isolate the first output port 113 and the second output port 114.

In this embodiment, the ring groove 122 is a groove body connected in a closed manner. The cross-sectional shape of the ring groove 122 may include any one of a rectangular ring, a circular ring, an elliptical ring, and the like. For example, the shape and area of the circular slot 122 may be set according to the area actually reserved for the power divider 1000 in the terminal device. For example, the shape and area of the annular slot 122 may be determined according to the operating frequency range of the power divider 1000. The shape and area of the circular slot 122 may be determined according to the operating frequency range of the power divider 1000 and the matching performance of the power dividing unit 110 and the isolation unit 120, for example.

In some embodiments, an extension of the central axis of the linear groove 121 passes through a central point of the loop groove 122 to divide the loop groove 122 into a first portion and a second portion which are symmetrical;

after the target output signal flows through the straight-line slot 121 from the closed transmission line 112, the target output signal is divided into a first target output signal and a second target output signal which are equal in amplitude and reverse, the first target output signal flows through the first part of the loop slot 122, the second target output signal flows through the second part of the loop slot 122, and the first target output signal and the second target output signal are cancelled at the first connection position of the first part and the second part of the loop slot 122 so as to isolate the first output port and the second output port;

the first connection point is a connection point far from the linear groove 121, and the target output signal is a first output signal or a second output signal.

It is easily understood that the power dividing unit 110 provided in the embodiment of the present application has a symmetrical structure, and the electrical lengths of the paths of signals passing through are the same, so that the input signal is equally divided into two parts and output from the output port. However, in practical applications, if the output signal may be reflected at one output port due to some reason, a part of the reflected signal will be transmitted to the other output port, and the other part will be reflected back to the input port, and be redistributed at the transmission line and retransmitted to the two output ports. In this embodiment, when an output signal is reflected from a certain port to another output port, the reflected signal passes through the linear groove 121, enters the ring groove 122 through the linear groove 121, and is equally divided into two paths of signals with equal size and 180 ° phase difference, which can meet and cancel each other, thereby realizing mutual isolation between the two output ports.

It should be noted that, as can be seen from the above description, when the power divider operates in a high frequency band, the requirement for the size of the power divider is higher, and if the size of the isolation unit 120 is larger, the distance between the two output ports should be further increased, so that the shape of the annular groove 122 may adopt a rectangular ring or an elliptical ring with a smaller width.

For example, as shown in FIG. 2, the cross-sectional shape of the ring groove 122 may be a rectangular ring. The cross-section is a planar pattern taken through the annular groove 122 in the horizontal plane of the dielectric layer 100.

For ease of understanding, the structure of the power divider 1000 is analyzed using the odd-even mode theory. When the even mode is excited, the signals of the first output port 113 and the second output port 114 are in equal amplitude and in phase, the central plane of the slot line portion, i.e. the plane where the symmetry axis of the slot line portion 120 is located, is equivalent to a magnetic wall, the slot line portion 120 is not excited, and the signals are synthesized and output at the input port 111. When the odd mode is excited, the signals of the first output port 113 and the second output port 114 are in equal amplitude and opposite phase, and the central surface of the slot line part is equivalent to an electric wall so as to isolate the output signals of the first output port 113 and the second output port 114. For example, when the slot line portion 120 is excited by an odd mode, as shown in fig. 3, the arrow direction indicates a signal transmission direction, since the end of the slot line portion 120 is the ring slot 122, after the signal enters the ring slot 122 from the straight slot 121, the signal is equally divided into two equal-amplitude signals with a phase difference of 180 °, and when the two equal-amplitude signals reach AA' in the ring slot 122, the two opposite-amplitude signals meet and cancel each other to suppress the coupling between the first output port 113 and the second output port 114, so that you isolate the first output port 113 and the second output port 114.

It should be noted that the above-mentioned odd-even mode theory is only an analysis method, and in practical applications, the power divider 1000 can be regarded as a linear combination of the two modes.

In some embodiments, the dielectric layer 100 used in the present application may be made of glass, Polytetrafluoroethylene (PTFE), and ceramic, and may have a thickness of 0.127 mm, a dielectric constant of 2.95, and a loss tangent of 0.0013.

It is easy to understand that the dielectric constant and the thickness of the dielectric layer 100 both have a certain effect on the power dividing unit 110 and the isolation unit 120, and therefore, the dimensions of the trench line portion 120 and the power dividing unit 110 can be determined according to the dielectric constant and the thickness of the dielectric layer 100.

Specifically, the waveguide wavelength of the groove line portion 120 can be determined according to the formula:wherein epsilon_rIs the dielectric constant of the dielectric layer 100, epsilon'_re＝(ε_r+1)/2，λ_gThe total path of the slot line part 120 from the left end to the right end needs to be ensured to be about one waveguide wavelength after the waveguide wavelength is obtained, because the electromagnetic wave passes through one waveguide wavelength which is a period, the phase of the signal entering the slot line part can be ensured to be unchanged, and when the odd mode is excited, two opposite signals meet and cancel each other.

In the present embodiment, the length l of the rectangular ring 122 is determined according to the waveguide wavelength, as shown in FIG. 2₁May be a quarter waveguide wavelength, and the length of the linear slot 121 may range from l₁/3<l₂<l₁/2, the width of the rectangular ring 122 may range from l₁/3<w₂<l₁/2. Corner cutting radius cut of the rectangular ring 122₁And cut₂Can be close to the width of the slot line, and can reduce the reflection of electromagnetic waves.

Specifically, the width of the groove line part 120 may be determined according to the formula:

in the above formula, Z_sIs the characteristic impedance of the slot line portion 120, w is the width of the slot line portion 120, h is the thickness of the dielectric layer 100, and λ₀Is the free space wavelength. Wherein the content of the first and second substances,c is the speed of light in vacuum, and f is the working frequency of the power divider. From this formula, the width of the groove line portion, i.e., w as shown in FIG. 2, can be calculated₁. In the working frequency band provided by the present application and using the dielectric layer 100, the range can be l by calculation₁/11<w₁<l₁/9。

In this embodiment, the length of the linear groove 121 extending into the circular ring transmission line 112 may be greater than the length of one fifth of the rectangular ring 122 and less than the length of one fourth of the rectangular ring 122.

Specifically, the matching degree of the ports can be improved by adjusting the length of the linear groove 121 extending into the circular ring transmission line 112, and it is determined through adjustment that each port has good impedance matching when the length of the linear groove 121 extending into the circular ring transmission line 112 ranges from being greater than the length of one fifth of the rectangular ring 122 to being less than the length of one fourth of the rectangular ring 122.

Specifically, the end of the linear slot 121 remote from the rectangular loop 122 may be located at the center of the circular loop transmission line 112.

In this embodiment, when the end of the linear slot 121 away from the rectangular ring 122 is located at the center of the circular ring transmission line 112, the power divider port has good output impedance matching, and the performance of the power divider is improved.

Specifically, the size of the power dividing unit 110 may be determined according to the formula:wherein Z is₀Is characteristic impedance of microstrip line, epsilon_reIs the effective dielectric constant, ε, of the dielectric layer 100_rIs the dielectric constant of the dielectric layer 100, ω is the microstrip line width, h is the dielectric thickness, wherein,waveguide wavelength of microstrip lineAccording to the waveguide wavelength, the path from the input port to the output port of the isolation unit needs to be ensured to be about one waveguide wavelength, and the size of each part of the power dividing unit is obtained.

Specifically, in this embodiment, the sizes of the parts of the power dividing unit 110 and the isolating unit 120 may be as follows: inner diameter r of the annular transmission line 112₁0.28 mm, the outer diameter r of the annular transmission line 112₂Is 0.38 mm. Length l of input port 111₃0.57 mm, width w of input port 111₃Is 0.24 mm. Length l of two output ports₄0.6 mm, the width w of the two output ports₄Is 0.18 mm. Two output ports are connected with the annular transmission line 112 through microstrip lines, and the width w of the connected microstrip lines is partial₅0.12 mm, length l of the connected microstrip line part₅Is 0.68 mm. Groove line part 12Width w of 0₁0.12 mm, length l of rectangular ring 122₁0.57 mm, the length l of the linear groove 121₂0.5 mm, width w of rectangular ring 122₂0.12 mm, inner ring corner cut radius cut of the rectangular ring 122₁And outer ring corner cut radius cut₂0.05 and 0.17, respectively.

In some embodiments, the first metal layer and the second metal layer are both made of copper.

It is readily understood that copper is second only to silver in conductivity, but is much less expensive than silver, and is often used in the art to form transmission lines or ground planes.

In this embodiment, the thickness of the first metal layer and the second metal layer may be 0.035 mm. Wherein the depth of the groove line part 120 of the second metal layer is also 0.035 mm.

In some embodiments, the power divider 1000 may further include a second dielectric layer, and the position of the second dielectric layer may include any one of the following positions: the second dielectric layer is positioned between the dielectric layer and the first metal layer; the second dielectric layer is positioned on one side of the first metal layer far away from the dielectric layer; the second dielectric layer is positioned on one side of the second metal layer far away from the dielectric layer.

Referring to fig. 4 for comparison, in the embodiment of the present application, three test power divider structures are further provided, the power divider of structure (1) is not provided with a slot line and is not added with an isolation resistor, the microstrip transmission line between the first output port and the second output port of the power divider of structure (2) is disconnected, the power divider of structure (3) is added with a 100 ohm resistor between the first output port and the second output port, and the three structures and the power divider 1000 are simulated respectively.

Referring to fig. 5, the simulation results (1) and (2) are schematic return loss diagrams of four power dividers, the return loss of the power divider 1000 is about 27dB to 37dB, the return loss of the structures (1) and (2) is about 26dB to 29dB, the return loss of the structure (3) is about 25dB to 33dB, and the return loss of the power divider 1000 provided in the embodiment of the present application is the minimum. The simulation result (3) is an insertion loss schematic diagram of the four power splitters, and the insertion loss of the power splitter 1000 provided in the embodiment of the present application is less than 3.6dB, and is not much different from the insertion loss of the other three structures. The simulation result (4) is an isolation curve diagram of four power dividers, the isolation of the power divider 1000 is about 24dB to 30dB, the isolation of the structure (1) and the structure (2) is about 6dB, and the isolation between the output ports of the structure (3) is about 22dB to 24 dB. As can be seen from simulation data, the isolation between the output ports of the power divider 1000 is improved by at least 20 dB.

In summary, the power divider 1000 has good standing wave and high isolation between the output ports, and does not need to install an isolation resistor between the output ports, so that the two output ports can be arbitrarily opened and bent, and the coupling effect between the two output ports is smaller. Meanwhile, the planar transmission structure is adopted, so that the cost can be saved, the mechanism is more compact and flexible, and the integration in a circuit is convenient.

Different from the prior art, the power divider 1000 provided in the present application includes a dielectric layer 100, a first metal layer attached to one side of the dielectric layer, and a second metal layer attached to the other side of the dielectric layer, where the first metal layer includes a power dividing unit 110, and the power dividing unit includes an input port 111, a first output port 113, and a second output port 114; the second metal layer includes an isolation unit 120, and the isolation unit 120 is disposed between the first output port 113 and the second output port 114, so that when the isolation unit 120 is excited by an odd mode, the isolation unit 120 forms an electrical wall to isolate the first output port 113 from the second output port 114, so that the power divider can operate in the W-band without installing an isolation resistor, and the first output port and the second output port still have a high isolation.

In addition to the above embodiments, other embodiments are also possible. All technical solutions formed by using equivalents or equivalent substitutions fall within the protection scope of the claims of the present application.

In summary, although the present application has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present application, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, so that the scope of the present application shall be determined by the appended claims.