WO2012092884A2

WO2012092884A2 - Phase shifter and antenna

Info

Publication number: WO2012092884A2
Application number: PCT/CN2012/070170
Authority: WO
Inventors: 刘少东; 罗英涛; 廖志强; 刘新明
Original assignee: 华为技术有限公司
Priority date: 2012-01-10
Filing date: 2012-01-10
Publication date: 2012-07-12
Also published as: WO2012092884A3; EP2629358A4; CN102714341B; CN102714341A; EP2629358A2; EP2629358B1

Abstract

Disclosed are a phase shifter and antenna. The phase shifter comprises an arc conductor component and a coupling arm component swingably disposed along the arc conductor component. The arc conductor component comprises: a first arc conductor and a second arc conductor concentrically disposed; the coupling arm component comprises: a first coupling arm and a second coupling arm disposed in a spatially isolated manner; a first end of the first coupling arm is in overlapping contact with the first arc conductor, and a second end of the first coupling arm is the input end of an input signal; a first end of the second coupling arm is in overlapping contact with the first arc conductor, and a second end of the second coupling arm is in overlapping contact with the second arc conductor; the first coupling arm and the second coupling arm are in overlapping contact with the first arc conductor at different locations, and a capacitive coupling electrical connection is formed at each overlapping contact between the coupling arms and the arc conductors. The phase shifter provided in the embodiments of the present invention is simple in structure and convenient for fabrication, able to effectively reduce the coupling between the arc conductors, thus improving the performance of the phase shifter.

Description

Phase shifter and antenna

TECHNICAL FIELD Embodiments of the present invention relate to wireless communication technologies, and in particular, to a phase shifter and an antenna. Background technique

The phase shifter controls the change in signal phase and is a key component in the antenna of a wireless communication base station. The phase shifter can phase shift the input signal, change the relative phase of the signals between the antenna elements, and adjust the downtilt angle of the antenna beam to facilitate the optimization of the communication network.

1 is a schematic structural view of a prior art phase shifter. As shown in FIG. 1, the phase shifter provided by the prior art includes a first circular arc conductor 101 and a second circular arc conductor 102, and the first circular arc conductor 101 and the second circular arc conductor 102 are concentrically arranged; the coupling arm 103 is physically The integrated structure of the connection is respectively overlapped on the first circular arc conductor 101 and the second circular arc conductor 102, and a capacitive coupling electrical connection is formed at the overlap with each circular arc conductor; when the input end 104 of the coupling arm 103 inputs a signal When the signal is coupled to the first circular arc conductor 101 and the second circular arc conductor 102 along the coupling arm 103, the signal coupled to the first circular arc conductor 101 is from the first output end 101 1 of the first circular arc conductor 101. And outputting from the second output terminal 1012, the signal coupled to the second circular arc conductor 102 is output from the third output terminal 1021 and the fourth output terminal 1022 of the second circular arc conductor 102. By swinging the rotation coupling arm 103 around the first circular arc conductor 101 and the second circular arc conductor 102, the overlapping position of the first circular arc conductor 101 and the second circular arc conductor 102 and the coupling arm 103 can be changed, thereby changing the signal. The transmission path on the circular arc conductor outputs a signal with the opposite phase at both ends of the circular arc conductor to realize phase shifting of the signal.

However, in the existing phase shifter structure, the coupling arm is an integral structure, and the coupling arm needs to be coupled with two arc conductors at the same time, so that the coupling between the two arc conductors is strong, and the signal interference between the arc conductors is strong. Larger, in order to ensure the performance of the phase shifter, it is necessary to increase the distance between the arc conductors, resulting in a large volume of the phase shifter; in addition, since the coupling arm is an integral structure, it is necessary to ensure the formation of the overlap with the two arc conductors. When capacitive coupling, the coupling arm requires high precision, which results in high production cost of the phase shifter. Summary of the invention The embodiment of the invention provides a phase shifter and an antenna, which can effectively overcome the coupling strongness between the arc-shaped conductors existing in the phase shifter with the existing coupling arm as an integral structure, and the manufacturing cost is high. The embodiment of the invention provides a phase shifter, comprising a circular arc conductor assembly, and a coupling arm assembly disposed along the arc-shaped conductor assembly, wherein the arc-shaped conductor assembly comprises:

Concentrically disposed first arc conductor and second arc conductor, wherein a radius of the first arc conductor is smaller than a radius of the second arc conductor;

The coupling arm assembly includes: a first coupling arm and a second coupling arm that are spatially separated; a first end of the first coupling arm overlaps the first arc conductor, and the first coupling arm The second end is the input end of the input signal;

The first end of the second coupling arm is overlapped on the first circular arc conductor, and the second end of the second coupling arm is overlapped on the second circular arc conductor;

The first coupling arm and the second coupling arm are overlapped at different positions of the first arc-shaped conductor, and a coupling-capacitance electrical connection is formed between the coupling arms and the arc-shaped conductor at the overlap. An embodiment of the present invention provides an antenna, including a phase shifter, wherein each output end of the phase shifter is respectively connected with an antenna unit;

The phase shifter is a phase shifter provided by the above embodiment of the present invention.

The phase shifter and the antenna provided by the embodiment of the invention provide the first coupling arm and the second coupling arm which are disposed in a spatially separated manner by the coupling arm assembly, and overlap the first coupling arm and the second coupling arm in the first Different positions of the arc conductor can effectively reduce the coupling between the first arc conductor and the second arc conductor, avoid signal interference between the arc conductors, improve the accuracy of the output signal of the phase shifter, and effectively reduce the shift The volume of the phaser reduces the manufacturing cost of the phase shifter and the antenna. DRAWINGS

The drawings used in the embodiments or the description of the prior art are briefly described. It is obvious that the drawings in the following description are some embodiments of the present invention, and are not creative to those skilled in the art. Other drawings can also be obtained from these drawings on the premise of labor. 1 is a schematic structural view of a prior art phase shifter;

2A is a front view of a phase shifter according to Embodiment 1 of the present invention;

2B is a schematic structural diagram of an assembly of a phase shifter according to Embodiment 1 of the present invention;

3 is a schematic structural diagram of a phase shifter according to Embodiment 2 of the present invention;

4 is a schematic structural diagram of a phase shifter according to Embodiment 3 of the present invention;

FIG. 5 is a schematic structural diagram of a phase shifter according to Embodiment 4 of the present invention; FIG.

6 is a schematic structural diagram of a phase shifter according to Embodiment 5 of the present invention;

FIG. 7 is a schematic structural diagram of an antenna according to Embodiment 6 of the present invention. The technical solutions in the embodiments of the present invention will be clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. Examples are some embodiments of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

In the phase shifter in which the existing coupling arm is a unitary structure, there is a problem that the coupling between the arc-shaped conductors is strong, and the manufacturing cost is high. The embodiment of the invention provides a phase shifter between the arc-shaped conductors. The transmission of the signal is realized by the split-armed coupling arm, specifically, the arc-shaped conductor assembly, and the coupling arm assembly disposed along the arc-shaped conductor assembly, wherein the arc-shaped conductor assembly includes the first arc-shaped conductor and the concentric arrangement a second circular arc conductor, and a radius of the first circular arc conductor is smaller than a radius of the second circular arc conductor; the coupling arm assembly includes a first coupling arm and a second coupling arm that are spatially separated; the first end of the first coupling arm Laying on the first circular arc conductor, the second end of the first coupling arm is for connecting the input signal; the first end of the second coupling arm is overlapped on the first circular arc conductor, and the second end of the second coupling arm is The first coupling arm and the second coupling arm are overlapped at different positions of the first circular arc conductor, and the coupling arms and the circular arc conductor form a capacitive coupling electrical connection at the lap joint. In the technical solution of the embodiment, the first coupling arm and the second coupling arm are separated structures that are spatially separated, and are overlapped at different positions of the first circular arc conductor, so that the input of the second end of the first coupling arm The signal is first coupled to the first arcuate conductor by the first coupling arm, then coupled to the second coupling arm by the first arcuate conductor, and finally coupled to the second arcuate conductor by the second coupling arm, such that the first arc There can be less coupling between the conductor and the second arc conductor to reduce The signal interference between the small arc conductors improves the performance of the phase shifter, and the distance between the first arc conductor and the second arc conductor can be set smaller, which is convenient for reducing the volume of the phase shifter; A coupling arm and a second coupling arm are disposed in a spatially separated split structure, which simplifies the complexity of the coupling arm fabrication, and the coupling precision between the coupling arm and the circular arc conductor is more easily controlled, thereby reducing the phase shifter. production cost.

In this embodiment, when the coupling arms overlap the arc-shaped conductors, one or more overlapping portions may be overlapped on the corresponding arc-shaped conductors. Preferably, the first coupling arms are first. The end may include at least two overlapping portions, and the first coupling arm may be overlapped at different positions of the first circular arc conductor by the at least two overlapping portions. In addition, the first end of the second coupling arm may also include at least two overlapping portions, and the second coupling arm may be overlapped at different positions of the first circular arc conductor through the at least two overlapping portions. In addition, the second end of the second coupling arm may also include at least two overlapping portions, and the second coupling arm may be overlapped at different positions of the second circular arc conductor through the at least two overlapping portions.

In this embodiment, the coupling arm assembly disposed along the arc conductor assembly means that the coupling arm assembly is rotatable around the center of the arc conductor in the arc conductor assembly, so that the coupling arm assembly rotates around the center of the circle. It can be swung along the arc conductor assembly.

The technical solution of the embodiment of the present invention will be described below by taking the specific structure of the phase shifter as an example.

2A is a front view of a phase shifter according to a first embodiment of the present invention; and FIG. 2B is a schematic diagram of an assembled structure of a phase shifter according to a first embodiment of the present invention. The phase shifter of the embodiment of the present invention is a four-port phase shifter. Specifically, as shown in FIG. 2A and FIG. 2B, the arc-shaped conductor assembly 1 in the phase shifter includes a first circular arc conductor 11 and a second circular arc conductor. 12, the first circular arc conductor 11 and the second circular arc conductor 12 are concentrically disposed, and the radius of the first circular arc conductor 11 is smaller than the radius of the second circular arc conductor 12; the coupling arm assembly 2 includes the first coupling arm 21 and a second coupling arm 22, the first end 201 of the first coupling arm 21 is overlapped on the first circular arc conductor 11, and the second end 202 of the first coupling arm 21 serves as an input end of the input signal for connecting the input signal; The first end of the second coupling arm 22 is overlapped on the first circular arc conductor 11, and the second end of the second coupling arm 22 is overlapped on the second circular arc conductor 12; between each coupling arm and each circular arc conductor The capacitive coupling electrical connection can be established by lapping, so that the input signal connected from the second end 202 of the first coupling arm 21 can be electrically connected through the capacitive coupling formed by the coupling arm and the arc-shaped conductor overlapping, and the input signal is transmitted to The end of each arc conductor.

In this embodiment, as shown in FIG. 2A and FIG. 2B, the two ends of the first circular arc conductor 1 1 are respectively provided. There are output terminals A1 and A2, and two ends of the second arc conductor 12 are respectively provided with output terminals B1 and B2, wherein A1 and B1 are on the same side, A2 and B2 are on the same side, and the second end 202 of the first coupling arm 21 is passed. The input input signal can output a phase signal from the four outputs.

In this embodiment, the first end 201 of the first coupling arm 21 can be overlapped on the first circular arc conductor 11 by two or more overlapping portions, specifically, as shown in FIG. 2A and FIG. 2B. The first end 201 of the coupling arm 21 has two first overlapping portions 211. The two first overlapping portions 211 can be symmetrically disposed on the first circular arc conductor 11 respectively, and the two first portions The lap portion 211 is located at a different position of the first circular arc conductor 11. Thus, the input signal input from the second end 202 of the first coupling arm 21 can be respectively coupled to the first circular arc conductor 11 through the two first overlapping portions 211, and from the two first circular arc conductors 11 Terminals A1, A2 output.

In this embodiment, as shown in FIG. 2A, both ends of the second coupling arm 22 are provided with one overlapping portion 221, which are respectively overlapped on the first circular arc conductor 11 and the second circular arc conductor 12, and The overlapping portion 221 connected to the first circular arc conductor 11 and the two first overlapping portions 211 on the first coupling arm 21 are located at different positions of the first circular arc conductor 11 such that the first coupling arm 21 and the second The coupling arm 22 is spatially spaced apart. Preferably, the two first overlapping portions 211 on the first end 201 of the first coupling arm 21 are symmetrically disposed with respect to the overlapping portion 221, such that the first coupling arm 21 is passed through the first coupling arm 21 The signal coupled to the first circular arc conductor 11 is coupled to the second coupling arm 22 at the lap 221 of the first circular arc conductor 11 and finally to the second circular arc conductor 12 by the second coupling arm 22. The lap portion 221 is coupled to the second circular arc conductor 12 and is output from both ends Bl, B2 of the second circular arc conductor 12.

In this embodiment, as shown in FIG. 2A and FIG. 2B, the circular arc conductor assembly 1 can be disposed on the first substrate 10, the coupling arm assembly 2 is disposed on the second substrate 20, and the first substrate 10 and the second substrate 20 are disposed. The second substrate 20 is pivoted along the first substrate 10 about the pivot 30 by the pivot 30 disposed at the center of the first circular arc conductor 11, so that the coupling arm assembly 2 is swung along the circular arc conductor assembly 1. Therefore, the overlapping position between each coupling arm and the circular arc conductor can be changed by the swing of the coupling arm assembly 2 along the circular arc conductor assembly 1, thereby realizing phase shifting of the signal. In the embodiment, by controlling the swing position of the second substrate 20, the phase of the signal outputted at both ends of each arc conductor can be controlled and adjusted to realize the adjustment of the output phase.

In this embodiment, the arc-shaped conductor assembly 1 may be disposed on the first substrate 10, and after the coupling arm assembly 2 is disposed on the second substrate 20, the first substrate 10 and the second substrate 20 are respectively aligned, and Connected by a pivot 30 to form a phase shifter.

It can be understood by those skilled in the art that in order to realize the swinging of the coupling arm assembly 2 along the circular arc conductor assembly 1, the first substrate 10 and the second substrate 20 can also be connected by other means, for example, by being located on the first substrate 10. A blind hole is disposed at a position of a center of the first circular arc conductor 11. A positioning post is disposed at a corresponding position on the second substrate 20, so that the second substrate 20 can be swung along the first substrate 10 by the cooperation of the positioning post and the blind hole.

It can be understood by those skilled in the art that the concentrically disposed first arc-shaped conductor and the second arc-shaped conductor mean that the center positions of the two arc-shaped conductors are completely coincident, or have a center position of the arc, such as within 1 mm, etc.; Similarly, the first substrate and the second substrate are pivotally connected by being disposed at a center of the first circular arc conductor, which means that the pivot is disposed at a center position of the first circular arc conductor or adjacent to a center of the circle.

It will be understood by those skilled in the art that the spatial separation of the first coupling arm and the second coupling arm means that the first coupling arm and the second coupling arm are physically disconnected.

In this embodiment, the first substrate 10 and the second substrate 20 are both printed circuit boards (PCBs), wherein the arc-shaped conductor assembly 1 and the coupling arm assembly 2 are printed on the PCB. Metal wire. Specifically, as shown in FIG. 2A, the first circular arc conductor 11 and the second circular arc conductor 12 are metal circular arc lines formed on a PCB board as the first substrate 10; the first coupling arm 21 and the second coupling The arm 22 is a metal strip line formed on a PCB board as the second substrate 20. Each of the metal arc strip lines and the metal strip line can form a circuit of a microstrip line structure to realize transmission of signals in the circuit. By forming the required arc conductor and coupling arm on the PCB board, the production precision and cost of the phase shifter can be effectively reduced, and the phase shifter can be smaller, on the basis of the same function as the conventional phase shifter. Volume, better integration when connected to other components.

Those skilled in the art can understand that the above-mentioned metal arc strip lines and metal strip lines can be fabricated by a certain etching process to obtain a metal wire structure of a desired shape; at the same time, each arc conductor or coupling formed The arm may also be a strip line structure, which is not limited in this embodiment.

In this embodiment, as shown in FIG. 2A and FIG. 2A, a signal input conductor portion 3 may be disposed on the first substrate 10 for accessing an input signal, and the second end 202 of the first coupling arm 21 is overlapped. This signal is input to the conductor portion 3. The signal input conductor portion 3 is a circular metal wire printed on a PCB as the first substrate 10, and the circular metal wire is printed on the second substrate. The metal strip lines on the 20 as the first coupling arm 21 are overlapped at corresponding positions, and a capacitive coupling electrical connection is formed at the lap joint. The input signal input through the signal input conductor portion 3 can be electrically coupled to the first coupling arm 21 by capacitive coupling at the junction with the first coupling arm 21, and then recoupled to the first coupling arm 21 by the first coupling arm 21 The first circular arc conductor 11 is coupled to the second coupling arm 22 by the first circular arc conductor 11 and finally coupled to the second circular arc conductor 12 by the second coupling arm 22.

In this embodiment, in order to avoid direct electrical contact between the coupling arm and the arc-shaped conductor, a green oil or a non-metallic material isolation film may be coated on the coupling arm and the arc-shaped conductor to ensure the coupling arm and the arc. The conductor forms a capacitively coupled electrical connection at the overlapped location.

In this embodiment, when the second substrate 20 swings relative to the first substrate 10 about the pivot 30, the overlapping position of the first coupling arm 21 and the first circular arc conductor 11, and the second coupling arm 22 and the first circular arc The overlapping position of the conductor 11 and the second circular arc conductor 12 moves along the circular arc conductor as the swing occurs; in the process, the input signal input from the signal input conductor portion 3 passes through the capacitive coupling at each overlap An output signal of a certain phase may be respectively formed at both ends of the first circular arc conductor and the second circular arc conductor, wherein a phase change trend of the output signals at both ends of the same circular arc conductor is opposite, and two arcs located on the same side The phase change of the output signal at the output of the conductor is the same. Specifically, as shown in FIG. 2A, the output ends A1 and A2 of the first circular arc conductor 11 output output signals having opposite phase changes, and the output ends B1 and B2 of the second circular arc conductor also output output signals having opposite phase change trends. , but A1 and B1 output the same output signal with the same phase change trend. Those skilled in the art can understand that the phase change amount of the output of the arc-shaped conductor output can be determined by the radius of the arc-arc conductor, so that the arc-shaped conductor of a suitable radius can be set according to actual needs.

In this embodiment, preferably, each of the overlapping portions of the coupling arms for overlapping with the arc-shaped conductors is a circular arc structure conforming to the shape of the circular arc conductor, that is, the overlapping of the coupling arm and the arc-shaped conductor Position, the lap joint of the coupling arm is in conformity with the shape of the circular arc conductor, so that the capacitive coupling electrical connection formed by the coupling arm and the arc conductor overlap is better.

In summary, the phase shifter provided by the embodiment of the present invention is configured to isolate the coupling arm to the component body structure, so that the input signal is coupled to the first arc conductor through the first coupling arm, and then coupled to the first arc conductor. The second coupling arm is finally coupled by the second coupling arm to the second circular arc conductor so that there can be less coupling between the first circular arc conductor and the second circular arc conductor, thereby avoiding signal interference between the circular arc conductors and improving The accuracy of the phase shifter output signal; at the same time, due to the weak coupling between the circular arc conductors, the distance between the circular arc conductors can be smaller, thereby reducing the volume of the phase shifter; In the split structure in which the coupling arm is isolated, in the manufacturing process of the coupling arm, it is only necessary to ensure the accuracy of the overlapping position between the coupling arms and the corresponding arc conductor, the coupling arm is simpler to manufacture, and the precision is easy to control, so that Phase shifters are less expensive to manufacture.

FIG. 3 is a schematic structural diagram of a phase shifter according to Embodiment 2 of the present invention. Different from the technical solutions of the embodiment shown in FIG. 2A and FIG. 2B, in this embodiment, the first coupling arm has only one overlapping portion when overlapping with the first circular arc conductor, and the second coupling arm and the first circle When the arc conductors are overlapped, they are overlapped by two second overlapping portions. Specifically, as shown in FIG. 3, in the phase shifter of this embodiment, the first end of the first coupling arm 21 has a lap portion 212 that is overlapped with the first circular arc conductor 1 1 in the overlapping position. Forming a capacitive coupling electrical connection; the first end of the second coupling arm 22 has two second overlapping portions 222, such that the second coupling arm 22 can overlap the first circular arc conductor through the two second overlapping portions 222 11 , the position of the two second overlapping portions 222 on the first circular arc conductor 11 is different, and is located on both sides of the overlapping position of the first coupling arm 21 and the first circular arc conductor 11 , and can be symmetrically disposed; The second end of the second coupling arm 22 has one overlapping portion 221 overlapping the second circular arc conductor 12.

In this embodiment, when the input signal is input from the second end 202 of the first coupling arm 21, it is coupled to the first circular arc conductor 11 through the overlapping portion 212 on the first coupling arm 21, and coupled to the first circle. A part of the signal of the arc conductor 11 is outputted from both ends along the first circular arc conductor 11; and the other part of the signal is electrically connected by capacitive coupling with the overlapping position of the second coupling arm 22, coupled to the second coupling arm 22, and finally The lap portion 221 on the second coupling arm 22 is coupled to the second circular arc conductor 12, and the signal is output from both ends of the second circular arc conductor 12 along the second circular arc conductor 12. By controlling the swing of the coupling arm assembly along the arc-shaped conductor assembly, the overlapping positions of the first coupling arm 21 and the second coupling arm 22 on the first circular arc conductor 11 and the second circular arc conductor 12 can be changed, thereby Change the phase of the output signal at each end of each arc conductor.

It can be understood by those skilled in the art that in the above FIG. 2A or FIG. 3, when the first coupling arm and the second coupling arm are overlapped with the arc-shaped conductors, they may have one overlapping portion as long as they are in the same arc. The overlapping position on the conductor may be different; in addition, in the above-mentioned FIG. 2A or FIG. 3, the second end of the second coupling arm and the second circular arc conductor may have two or more The connecting portion is configured such that the second coupling arm can be overlapped on the second circular arc conductor by at least two overlapping portions, and the at least two overlapping portions correspond to different positions of the second circular arc conductor.

FIG. 4 is a schematic structural diagram of a phase shifter according to Embodiment 3 of the present invention. In this embodiment, based on the technical solution of the embodiment shown in FIG. 2A, a third arc conductor and a third coupling may be disposed. The arm is formed with a six-port phase shifter. Specifically, as shown in FIG. 4, on the basis of the structure shown in FIG. 2A, the circular arc conductor assembly 1 further includes a third circular arc conductor 13 and the third circular arc conductor. 13 is concentrically disposed with the first circular arc conductor 11, and the radius of the third circular arc conductor 11 is greater than the radius of the second circular arc conductor 12; correspondingly, the coupling arm assembly 2 further includes a third coupling arm 23, the third coupling The first end of the arm 23 is overlapped on the second circular arc conductor 12, and the second end of the third coupling arm 23 is overlapped on the third circular arc conductor 13, so that a capacitive coupling electrical connection can be respectively formed at the overlapping portion. In order to couple the signal from the circular arc conductor to the coupling arm via a capacitive coupling electrical connection or from the coupling arm to the circular arc conductor.

In this embodiment, the second coupling arm 22 and the third coupling arm 23 may be an integral structure that is spatially physically connected, and the signal is input after the input signal passes through the first coupling arm 21, the first arc conductor 11, and the second coupling arm 22. The strength gradually decreases, and therefore, when the signals are coupled to the second circular arc conductor 12 and the third circular arc conductor 13 through the second coupling arm 22 and the third coupling arm 23 of the unitary structure, respectively, the second circular arc conductor 12 The coupling between the third arc conductor 13 and the third arc conductor 13 will be relatively small, and the signal interference between the two arc conductors will be relatively small, which will not affect the accuracy of the phase shifter.

In this embodiment, the input signal input from the second end 202 of the first coupling arm 21 can be coupled to the first circular arc conductor 11 via the first coupling arm 21, and the partial signal is output from both ends of the first circular arc conductor 11. And the phase change of the output at both ends is opposite, a portion of the signal is coupled to the second coupling arm 22; a portion of the signal coupled to the second coupling arm 22 is coupled to the second arc conductor 12, partially coupled to the third arc conductor 13 a signal coupled to the second circular arc conductor 12 is output from both ends of the second circular arc conductor 12, and a signal coupled to the third circular arc conductor 13 is output from both ends of the third circular arc conductor 13, and each circular arc conductor The phase of the signal output at both ends is opposite.

FIG. 5 is a schematic structural diagram of a phase shifter according to Embodiment 4 of the present invention. Different from the technical solution of the embodiment shown in FIG. 4, in this embodiment, when the first coupling arm overlaps with the first circular arc conductor, there is only one overlapping portion, and when the second coupling arm overlaps with the first circular arc conductor, It is overlapped by two second overlapping portions. Specifically, as shown in FIG. 5, the first end of the first coupling arm 21 has a lap portion 212 which is overlapped with the first circular arc conductor 11 to form a capacitive coupling electrical connection at the overlapping position; The first end of the arm 22 has two second overlapping portions 222, so that the second coupling arm 22 can be overlapped on the first circular arc conductor 11 through the two second overlapping portions 222. The position of the connecting portion 222 on the first circular arc conductor 11 is different, and is located on both sides of the overlapping position of the first coupling arm 21 and the first circular arc conductor 11 , and can be symmetrically disposed; the second of the second coupling arm 22 One end has 1 The joint 221 is overlapped on the second circular arc conductor 12.

In this embodiment, the input signal input from the second end 202 of the first coupling arm 21 can also be first coupled to the first circular arc conductor 11 through the first coupling arm 21, and then coupled to the first circular arc conductor 11 by the first coupling arm 21 The second coupling arm 22 is finally coupled to the second circular arc conductor 12 and the third circular arc conductor 13 by the second coupling arm 22 and the third coupling arm 23 of the unitary structure.

FIG. 6 is a schematic structural diagram of a phase shifter according to Embodiment 5 of the present invention. Different from the technical solution of the embodiment shown in FIG. 4 above, in the embodiment, when the second coupling arm is overlapped with the first circular arc conductor and the second circular arc conductor, the two coupling portions are overlapped by two overlapping portions. And the third coupling arm and the second coupling arm are spatially isolated, that is, the third coupling arm and the second coupling arm are physically disconnected, specifically, as shown in FIG. 6, the second coupling arm 22 The two ends of the second coupling arm 23 and the second arc-shaped conductor 12 are located at two ends of the second coupling arm 22 and the second arc-shaped conductor 12 Between the overlapping portions 222, and the two second overlapping portions 222 can be symmetrically disposed.

In this embodiment, the signal coupled from the first circular arc conductor 11 to the second coupling arm 22 is first coupled to the second circular arc conductor 12, and then coupled to the third coupling arm 23 by the second circular arc conductor 12, and finally The third coupling arm 23 is coupled to the third circular arc conductor 13 so that each arc conductor has a small coupling between them, which can be adapted to phase shift control with a stronger signal.

Those skilled in the art can understand that when the above-mentioned coupling arms are overlapped with the arc-shaped conductors, in addition to being overlapped with the arc-shaped conductors by one lap or two laps, more laps can be passed. For example, three or more lap joints are overlapped with the arc conductors. In practical applications, a suitable number of lap joints may be provided to overlap the corresponding arc conductors.

Those skilled in the art can understand that in addition to the above-mentioned four-port phase shifter and six-port phase shifter, other phase-receiving phase shifters can be realized by increasing the number of arc-shaped conductors, for example, 8-port. 13 port, etc., which has a structure similar to that of the above-described four-port phase shifter or six-port phase shifter, will not be described herein.

FIG. 7 is a schematic structural diagram of an antenna according to Embodiment 6 of the present invention. As shown in FIG. 7 , the antenna of the embodiment includes a phase shifter 100 , and each of the output ends of the phase shifter 100 is respectively connected with an antenna unit 200 , wherein the phase shifter 100 can specifically adopt the above-mentioned FIG. 2A and FIG. 2B . The phase shifter of the technical solution of the embodiment is not described herein.

In the antenna of this embodiment, the antenna unit may be an antenna radiating unit, and the specific structure and work It can be the same as the antenna radiating unit in the conventional antenna, and will not be described here.

In the antenna of the embodiment, the phase of the output end of each circular arc conductor of the phase shifter 100 can be changed by controlling the swing position of the coupling arm in the phase shifter 100, thereby changing the relative phase of the signals between the antenna elements to adjust the antenna. The specific tilting angle of the beam is the same as or similar to that of the conventional antenna, and is not described here.

It can be understood by those skilled in the art that the antenna of this embodiment can also adopt the phase shifter as shown in FIG. 3; in addition, in practical applications, a phase shifter that sets the appropriate number of ports can be selected according to the number of antenna units, for example, the antenna has For 6 antenna units, you can select the 6-port phase shifter as shown in Figure 4, Figure 5 or Figure 6, or you can also select the 4-port phase shifter as shown in Figure 2A or Figure 3 and move through the common The manner of the output of the phase device is not limited in this embodiment.

It should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims

Claim

A phase shifter, comprising: a circular arc conductor assembly, and a coupling arm assembly disposed along the arcuate conductor assembly, wherein the circular arc conductor assembly comprises:

The first coupling arm and the second coupling arm are overlapped at different positions of the first arc-shaped conductor, and a coupling-capacitance electrical connection is formed between the coupling arms and the arc-shaped conductor at the overlap.

2. The phase shifter according to claim 1, wherein the first end of the first coupling arm includes at least two laps, and the first coupling arm passes the at least two laps Lap over different positions of the first circular arc conductor.

The phase shifter according to claim 1 or 2, wherein the first end of the second coupling arm includes at least two overlapping portions, and the second coupling arm passes the at least two The joint overlaps at different positions of the first circular arc conductor.

The phase shifter according to any one of claims 1 to 3, wherein the second end of the second coupling arm includes at least two overlapping portions, and the second coupling arm passes the at least two The laps are overlapped at different positions of the second arcuate conductor.

The phase shifter according to any one of claims 1 to 4, wherein the arc-shaped conductor assembly further comprises at least one third circular arc conductor;

The third circular arc conductor is concentrically disposed with the first circular arc conductor, and a radius of the third circular arc conductor is greater than a radius of the second circular arc conductor;

The coupling arm assembly further includes a third coupling arm;

The first end of the third coupling arm is overlapped on the second circular arc conductor, and the second end of the third coupling arm is overlapped on the third circular arc conductor.

6. The phase shifter according to claim 5, wherein the third coupling arm and the second coupling arm are physically connected.

7. The phase shifter according to claim 5, wherein the second coupling arm and the third coupling arm are spatially isolated.

The phase shifter according to any one of claims 1 to 7, wherein the arc-shaped conductor assembly is disposed on the first substrate, and the coupling arm assembly is disposed on the second substrate;

The first substrate and the second substrate are connected by a pivot disposed at a center of the first circular arc conductor, and the coupling arm assembly is swung along the circular arc conductor through the pivot.

The phase shifter according to claim 8, wherein the first substrate is further provided with a signal input conductor portion;

A second end of the first coupling arm is overlapped on the signal input conductor portion, and the input conductor portion is connected to an input signal.

The phase shifter according to claim 9, wherein the first coupling arm and the signal input conductor portion are located at a center of the first arc conductor;

The first coupling arm and the signal input conductor form a capacitively coupled electrical connection at the lap joint.

The phase shifter according to claim 8, wherein the first substrate and the second substrate are both printed circuit boards;

The arcuate conductor assembly and coupling arm assembly are metal wires printed on the printed circuit board.

An antenna, comprising: a phase shifter, wherein each output end of the phase shifter is connected with an antenna unit;

The phase shifter is a phase shifter according to any of the preceding claims 1 - 11.