WO2021244015A1

WO2021244015A1 - Antenna device, phase-shift feed device, and phase shifter

Info

Publication number: WO2021244015A1
Application number: PCT/CN2020/140285
Authority: WO
Inventors: 王宇; 李明超; 苏国生
Original assignee: 京信通信技术(广州)有限公司; 京信射频技术(广州)有限公司
Priority date: 2020-06-04
Filing date: 2020-12-28
Publication date: 2021-12-09
Also published as: CN212162087U

Abstract

The present invention relates to an antenna device, a phase-shift feed device, and a phase shifter. The phase shifter comprises a metal cavity, a phase-shift circuit, insulating support members, and two sliding medium blocks. The phase-shift circuit is machined from a metal sheet; the phase-shift circuit and the insulating support members are provided in the metal cavity; the phase-shift circuit is connected to the metal cavity by means of the insulating support members; the phase-shift circuit is located at the middle part of the metal cavity and isolated from the metal cavity. The two sliding medium blocks are provided inside the metal cavity; the two sliding medium blocks are respectively located on two sides of the phase-shift circuit; the sliding medium blocks can move in the metal cavity in the extending direction of the phase-shift circuit. When the positions of the sliding medium blocks in the metal cavity are adjusted, the electrical length in the phase-shift circuit can be changed, so that signal terminals differ in output phases. The phase-shift circuit on longer uses a PCB as a carrier, so that the material cost of the phase shifter can be reduced, the loss of phase shifter can be reduced, and antenna gain is increased.

Description

Antenna device, phase shifting feeder and phase shifter

Technical field

The present invention relates to the field of antenna technology, in particular to an antenna device, a phase-shifting power feeding device and a phase shifter.

Background technique

With the development of antenna technology, miniaturized antennas have become the development trend of base station antennas. The phase-shifting feeder is the core element of the base station antenna. The electrical signal enters the corresponding antenna channel through the phase-shifting feeder for power division and phase-shift processing to achieve signal radiation.

Traditionally, a phase-shifting feeder is generally composed of two separate components, a phase shifter and a feeder network board. The phase shifter is used to transmit radio frequency signals with a specific amplitude and phase to the radiating unit to form a specific beam coverage. At this stage, the phase shifting circuit of the phase shifter usually uses the PCB board as the carrier, that is, the phase shifting circuit is laid out on the PCB board, the PCB board is placed in the center of the metal cavity, and the dielectric board with a specific shape and dielectric constant is dragged to change the shift. The phase of each port of the phase circuit. However, the phase shifter circuit uses the PCB board as the carrier phase shifter, because the dielectric constant of the PCB board is greater than the dielectric constant of air (the dielectric constant of air is 1), and the dielectric loss is inevitable, that is to say, the PCB board is used as the carrier. The phase shifter has dielectric loss, which affects the gain of the antenna device.

Summary of the invention

Based on this, it is necessary to overcome the defects of the prior art and provide an antenna device, a phase-shifting feed device and a phase shifter, which can reduce loss and increase antenna gain.

The technical solution is as follows: a phase shifter, the phase shifter comprising: a metal cavity; a phase shifting circuit and an insulating support, the phase shifting circuit is formed by metal sheet processing, the phase shifting circuit and the insulation The support is disposed in the metal cavity, the phase shift circuit is connected to the metal cavity through the insulating support, and the phase shift circuit is located in the middle of the metal cavity and is connected to the metal cavity. Are separated from each other; two sliding dielectric blocks, two of the sliding dielectric blocks are arranged inside the metal cavity, the two sliding dielectric blocks are respectively located on both sides of the phase shifting circuit, the sliding dielectric block can be along The extension direction of the phase shift circuit moves in the metal cavity.

In the above-mentioned phase shifter, the phase shift circuit is formed by metal sheet processing, and is arranged in the middle part of the metal cavity through an insulating support. The sliding dielectric block is slidably arranged on the phase shift circuit. When adjusting the sliding dielectric block in the metal cavity The position in the body can change the electrical length in the phase shift circuit, so that the output phase difference of each signal terminal can be realized. Among them, since the phase shift circuit no longer uses the PCB board as the carrier, the material cost of the phase shifter can be reduced, the loss of the phase shifter can be reduced, and the antenna gain can be improved.

In one of the embodiments, a groove is provided on the wall surface of the metal cavity facing the phase shift circuit, and the end of the insulating support is inserted into the groove.

In one of the embodiments, the two opposite walls of the metal cavity facing the phase shifting circuit are provided with grooves, the phase shifting circuit is provided with through holes, and the insulating support is provided on the In the through hole, two ends of the insulating support member are respectively inserted into the two grooves.

In one of the embodiments, the insulating support member is a support column, and a side wall of the support column is provided with a flange, and the flange conflicts with the bottom surface of the phase shift circuit.

In one of the embodiments, the groove extends from one end of the metal cavity to the other end of the metal cavity.

In one of the embodiments, the number of grooves provided on the top wall of the metal cavity is two and they are spaced apart from each other; the number of grooves provided on the bottom wall of the metal cavity is two And are arranged at intervals; the two grooves on the top wall surface of the metal cavity and the two grooves on the bottom wall surface are arranged in one-to-one correspondence.

In one of the embodiments, there are multiple insulating supports, multiple through holes on the phase shift circuit, and multiple insulating supports and multiple through holes are arranged in a one-to-one correspondence.

In one of the embodiments, the phase shifter further includes a pull rod connected to the sliding medium block; the insulating support is a plastic support, a rubber support, a silicone support, or a wooden support; The phase shifter further includes a plurality of cables, and the plurality of the cables are arranged in a one-to-one correspondence with the plurality of signal terminals of the phase shift circuit; Correspondingly provided a plurality of installation ports, the cable is provided in the installation port, the inner core of the cable is electrically connected to the signal terminal of the phase shift circuit, and the outer conductor of the cable is electrically connected to the metal cavity connect.

A phase-shifting power feeding device includes the phase shifter, and further includes a feeding network board and a radiating unit, and the phase shifting circuit is electrically connected to the feeding network board and the radiating unit through a cable.

In the above-mentioned phase-shifting power supply device, the phase-shifting circuit is formed by metal sheet processing and is arranged in the middle part of the metal cavity through an insulating support. The sliding dielectric block is slidably arranged on the phase-shifting circuit. When the position in the metal cavity is used, the electrical length in the phase shift circuit can be changed, so that the output phase difference of each signal terminal can be realized. Among them, since the phase shift circuit no longer uses the PCB board as the carrier, the material cost of the phase shifter can be reduced, the loss of the phase shifter can be reduced, and the antenna gain can be improved.

An antenna device includes the aforementioned phase-shifting feeder device.

In the above-mentioned antenna device, the phase shift circuit is formed by metal sheet processing and is arranged in the middle part of the metal cavity through an insulating support. The sliding dielectric block is slidably arranged on the phase shift circuit. When adjusting the sliding dielectric block in the metal cavity When the position of the phase shift circuit is changed, the electrical length in the phase shift circuit can be changed, so that the output phase difference of each signal terminal can be realized. Among them, since the phase shift circuit no longer uses the PCB board as the carrier, the material cost of the phase shifter can be reduced, the loss of the phase shifter can be reduced, and the antenna gain can be improved.

Description of the drawings

The drawings constituting a part of the present application are used to provide a further understanding of the present invention, and the exemplary embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention.

In order to explain the technical solutions in the embodiments of the present invention more clearly, the following will briefly introduce the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

FIG. 1 is a structural view of a phase shifter in an embodiment of the present invention;

2 is a structural view of a metal cavity of a phase shifter in an embodiment of the present invention;

Figure 3 is a schematic diagram of the enlarged structure of Figure 2 at A;

4 is a structural view of the phase shifter in an embodiment of the present invention after removing the metal cavity;

Fig. 5 is a schematic diagram of the enlarged structure at B of Fig. 4;

FIG. 6 is a schematic diagram of the enlarged structure of FIG. 4 at C. FIG.

10. Metal cavity; 11. Opening; 12. Groove; 13. Mounting port; 20. Phase shift circuit; 21. Through hole; 30. Insulating support; 31. Flange; 40. Sliding dielectric block; 50. Tie rod; 60, cable; 61, inner core; 62, outer conductor.

detailed description

In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following description, many specific details are explained in order to fully understand the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

Referring to FIG. 1, FIG. 1 shows a perspective structure diagram of a phase shifter in an embodiment of the present invention. A phase shifter provided by an embodiment of the present invention includes a metal cavity 10 and a phase shifter. The circuit 20, the insulating support 30, and two sliding dielectric blocks 40.

The phase shifting circuit 20 is formed by metal sheet processing. The phase shifting circuit 20 and the insulating support 30 are arranged in the metal cavity 10, and the phase shifting circuit 20 is connected to the metal cavity 10 through the insulating support 30. The phase shifting circuit 20 is located in the metal cavity. The middle part of the body 10 is separated from the metal cavity 10. It should be noted that the mutual isolation means that the phase shifting circuit 20 and the metal cavity 10 are not electrically connected and are isolated from each other. Two sliding dielectric blocks 40 are arranged inside the metal cavity 10, and the two sliding dielectric blocks 40 are respectively located on both sides of the phase shifting circuit 20. The sliding dielectric blocks 40 can be located in the metal cavity 10 along the extension direction of the phase shifting circuit 20. move. It should be noted that the metal cavity 10 is generally an elongated cavity, and the cross section of the cavity is, for example, a rectangle, a triangle, a circle, a polygon, or other irregular shapes, etc., which is not limited herein. The extension direction of the phase shift circuit 20 is from one end of the opposite ends of the elongated cavity to the other end, that is, the direction shown by the arrow S in FIG. 2.

In the above-mentioned phase shifter, the phase shift circuit 20 is formed by metal sheet processing and is arranged in the middle part of the metal cavity 10 through the insulating support 30. The sliding dielectric block 40 is slidably arranged on the phase shift circuit 20. When adjusting the sliding When the position of the dielectric block 40 in the metal cavity 10, the electrical length in the phase shifting circuit 20 can be changed, so that the output phase difference of each signal terminal can be realized. Among them, since the phase shifting circuit 20 no longer uses a PCB board as a carrier, the material cost of the phase shifter can be reduced, the loss of the phase shifter can be reduced, and the antenna gain can be improved.

In addition, please refer to FIGS. 2 and 4. FIG. 2 illustrates a perspective structural view of the metal cavity 10 of the phase shifter in an embodiment of the present invention; FIG. 4 illustrates the shift in an embodiment of the present invention. One perspective structural diagram of the phase device with the metal cavity 10 removed. In this embodiment, opposite ends of the elongated cavity are provided with openings 11, and the sliding medium block 40 extends from the opening 11 at one end of the metal cavity 10 to the opening 11 at the other end. In addition, the entire phase shift circuit 20 is located inside the metal cavity 10.

Please refer to Figure 1, Figure 3, Figure 5 or Figure 6. Figure 3 is an enlarged schematic view of Figure 2 at A, Figure 5 is an enlarged schematic view of Figure 4 at B, and Figure 6 is an enlarged schematic of Figure 4 at C Schematic. In one embodiment, the wall surface of the metal cavity 10 facing the phase shift circuit 20 is provided with a groove 12, and the end of the insulating support 30 is inserted into the groove 12. In this way, the groove 12 acts as a limit for the insulating support 30, and prevents the insulating support 30 from moving in the metal cavity 10 along the direction perpendicular to the extending direction of the groove 12, so that the phase shift circuit 20 can be stably and reliably Set in the metal cavity 10.

Please refer to FIG. 1, FIG. 3, FIG. 5 or FIG. 6. Further, two opposite walls of the metal cavity 10 facing the phase shift circuit 20 are provided with grooves 12. The phase shift circuit 20 is provided with a through hole 21. The insulating support 30 is disposed in the through hole 21. Two ends of the insulating support 30 are inserted into the two grooves 12 respectively. In this way, the two grooves 12 play a better role in limiting the insulating support 30. Specifically, the insulating support 30 is a linear support column. At this time, the grooves 12 on the two opposite wall surfaces of the metal cavity 10 are arranged opposite to each other. Of course, if the insulating support 30 is not a linear support column, for example, the top end of the support column and the bottom end of the support column are misaligned to a certain extent and are not on the same straight line, the two opposite wall surfaces of the metal cavity 10 are not arranged oppositely either. But there is a certain misalignment.

Optionally, a groove 12 is provided on two opposite walls of the metal cavity 10, one of the walls of the metal cavity 10 facing the moving circuit is provided with a groove 12, and the other wall is not provided with a groove 12 12. That is to say, one end of the insulating support 30 is disposed in the groove 12, and the other end is not disposed in the groove 12, but only needs to be in contact with the wall surface of the metal cavity 10.

Please refer to Figure 1, Figure 3, Figure 5 or Figure 6, in one embodiment, the insulating support 30 is a support column, the side wall of the support column is provided with a flange 31, the flange 31 and the bottom surface of the phase shift circuit 20 conflict. In this way, the flange 31 supports the phase shifting circuit 20, which can realize that the phase shifting circuit 20 is located in the middle of the metal cavity 10, and can prevent the phase shifting circuit 20 and the metal cavity 10 from being electrically contacted. Specifically, the flange 31 is circumferentially arranged around the side wall of the supporting column, so that the supporting effect of the phase shifting circuit 20 is better.

It should be noted that in the infringement comparison, the "flange 31" can be a "part of the support column", that is, the "flange 31" and the "other parts of the support column" are integrally formed; it can also be combined with the "support column". The "other parts" can be separated as an independent component, that is, the "flange 31" can be manufactured independently, and then combined with the "other parts of the support column" into a whole. As shown in Fig. 1, in one embodiment, the "flange 31" is a part of the "support column" manufactured by integral molding.

In one embodiment, the groove 12 extends from one end of the metal cavity 10 to the other end of the metal cavity 10. In this way, during the assembly process of the phase shifter, after the phase shifting circuit 20, the insulating support 30, and the sliding dielectric block 40 are assembled together, they are gradually pushed into the metal cavity 10 from one end of the metal cavity 10 to push In the process, the groove 12 plays a role of guiding and limiting the insulating support 30, which is beneficial to realize that the phase shifting circuit 20, the insulating support 30 and the sliding dielectric block 40 are quickly and firmly installed in the metal cavity 10.

Please refer to FIG. 1, FIG. 3 and FIG. 5. In one embodiment, there are two grooves 12 provided on the top wall surface of the metal cavity 10 and they are spaced apart from each other. There are two grooves 12 provided on the bottom wall surface of the metal cavity 10 and are spaced apart from each other. The two grooves 12 on the top wall of the metal cavity 10 are arranged in one-to-one correspondence with the two grooves 12 on the bottom wall.

Referring to FIGS. 1, 3, and 5, in one embodiment, there are multiple insulating supports 30, and there are multiple through holes 21 on the phase shifting circuit 20, and multiple insulating supports 30 and multiple through holes 21 One-to-one correspondence settings. In this way, the phase shifting circuit 20 is supported by the plurality of insulating supports 30, so that the phase shifting circuit 20 can be stably and reliably arranged in the metal cavity 10.

Please refer to FIG. 4. In one embodiment, the phase shifter further includes a pull rod 50. The pull rod 50 is connected to the sliding medium block 40. In this way, the sliding dielectric block 40 can be easily pulled by the pull rod 50 to adjust the position of the sliding dielectric block 40 relative to the phase shifting circuit 20, and to change the electrical length in the phase shifting circuit 20, so that the output phase difference of each signal terminal can be realized. The pull rod 50 may be specifically connected with two medium sliding blocks. When the pull rod 50 is moved, the two medium sliding blocks are synchronously driven to move, which makes the operation more convenient.

Specifically, the insulating support 30 is a plastic support, a rubber support, a silicone support, or a wooden support. Of course, the insulating support 30 can also be made of other insulating materials, which is not limited here.

Referring to FIG. 5 or FIG. 6, in one embodiment, the phase shifter further includes a plurality of cables 60, and the plurality of cables 60 are arranged in a one-to-one correspondence with the plurality of signal terminals of the phase shift circuit 20. The side wall surface of the metal cavity 10 is provided with a plurality of installation ports 13 corresponding to the plurality of cables 60. The cable 60 is provided in the installation port 13, and the inner core 61 of the cable 60 corresponds to the signal terminal of the phase shift circuit 20 Electrically connected, the outer conductor 62 of the cable 60 is electrically connected to the metal cavity 10. Specifically, the inner core 61 of the cable 60 is connected to the signal terminal of the phase shift circuit 20 by welding correspondingly. The outer conductor 62 of the cable 60 is welded to the metal cavity 10.

It should be pointed out that other methods can also be used to achieve electrical connection between the phase shift circuit 20 and the feeder circuit, which is not limited here.

It should be noted that one of the sliding dielectric blocks 40 is located above the phase shifting circuit 20, the bottom surface of the sliding dielectric block 40 is in sliding contact with the top surface of the phase shifting circuit 20, and the top surface of the sliding dielectric block 40 is in contact with the metal cavity. The top surface of 10 is in sliding contact and fit, and there may be a certain gap between the top surface of the sliding medium block 40 and the top surface of the metal cavity 10 due to assembly errors. Another sliding dielectric block 40 is located below the phase shifting circuit 20. The bottom surface of the sliding dielectric block 40 is in sliding contact with the bottom surface of the metal cavity 10, and the top surface of the sliding dielectric block 40 is in sliding contact with the bottom surface of the phase shifting circuit 20. There may be a certain gap between the top surface of the sliding dielectric block 40 and the bottom surface of the phase shift circuit 20 due to assembly errors.

Optionally, different from the above-mentioned solution in which a groove 12 is provided on the wall surface of the metal cavity 10 facing the phase shift circuit 20, the groove 12 is provided at the end of the insulating support 30, and the metal cavity 10 faces the phase shift circuit. The wall surface of the circuit 20 is provided with bumps, and the bumps are arranged in the groove 12 of the insulating support 30.

Please refer to FIG. 1 again. In one embodiment, a phase shifting feeder device includes a phase shifter in any of the above embodiments, and further includes a feed network board and a radiating unit. The phase shift circuit 20 is connected to the feeder via a cable 60, respectively. The electrical network board and the radiation unit are electrically connected.

In the above-mentioned phase-shifting power supply device, the phase-shifting circuit 20 is formed by metal sheet processing, and is arranged in the middle part of the metal cavity 10 through the insulating support 30, and the sliding dielectric block 40 is slidably arranged on the phase-shifting circuit 20. When adjusting the position of the sliding dielectric block 40 in the metal cavity 10, the electrical length in the phase shifting circuit 20 can be changed, so that the output phase difference of each signal terminal can be realized. Among them, since the phase shifting circuit 20 no longer uses a PCB board as a carrier, the material cost of the phase shifter can be reduced, the loss of the phase shifter can be reduced, and the antenna gain can be improved.

Please refer to FIG. 1 again. In one embodiment, an antenna device includes the above-mentioned phase-shifting power feeding device.

In the above-mentioned antenna device, the phase shift circuit 20 is formed by metal sheet processing, and is arranged in the middle part of the metal cavity 10 through the insulating support 30. The sliding dielectric block 40 is slidably arranged on the phase shift circuit 20. When adjusting the sliding medium When the block 40 is positioned in the metal cavity 10, the electrical length in the phase shifting circuit 20 can be changed, so that the output phase difference of each signal terminal can be realized. Among them, since the phase shifting circuit 20 no longer uses a PCB board as a carrier, the material cost of the phase shifter can be reduced, the loss of the phase shifter can be reduced, and the antenna gain can be improved.

The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the various technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, All should be considered as the scope of this specification.

The above-mentioned embodiments only express several implementation modes of the present invention, and their description is relatively specific and detailed, but they should not be understood as a limitation on the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be subject to the appended claims.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" , "Radial", "Circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the pointed device or The element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. , Or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components, unless otherwise specified The limit. For those of ordinary skill in the art, the specific meanings of the above-mentioned terms in the present invention can be understood according to specific circumstances.

In the present invention, unless expressly stipulated and defined otherwise, the first feature “on” or “under” the second feature may be in direct contact with the first and second features, or the first and second features may be indirectly through an intermediary. get in touch with. Moreover, the "above", "above" and "above" of the first feature on the second feature may mean that the first feature is directly above or obliquely above the second feature, or it simply means that the level of the first feature is higher than that of the second feature. The "below", "below", and "below" of the second feature of the first feature can mean that the first feature is directly below or obliquely below the second feature, or it simply means that the level of the first feature is smaller than the second feature.

It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or a central element may also be present. When an element is considered to be "connected" to another element, it can be directly connected to the other element or an intermediate element may be present at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not mean the only implementation.

Claims

A phase shifter, characterized in that the phase shifter comprises:

Metal cavity

A phase-shifting circuit and an insulating support, the phase-shifting circuit is formed by metal sheet processing, the phase-shifting circuit and the insulating support are arranged in the metal cavity, and the phase-shifting circuit is connected to the insulating support through the insulating support. The metal cavity is connected, and the phase shift circuit is located in the middle of the metal cavity and is isolated from the metal cavity;

Two sliding dielectric blocks, the two sliding dielectric blocks are arranged inside the metal cavity, and the two sliding dielectric blocks are respectively located on both sides of the phase shifting circuit, and the sliding dielectric blocks can move along the The extension direction of the phase shift circuit moves in the metal cavity.
The phase shifter according to claim 1, wherein a groove is provided on the wall surface of the metal cavity facing the phase shift circuit, and the end of the insulating support is inserted into the groove .
The phase shifter according to claim 2, wherein the two opposite walls of the metal cavity facing the phase shift circuit are provided with grooves, and the phase shift circuit is provided with through holes, so The insulating support member is arranged in the through hole, and two ends of the insulating support member are respectively inserted into the two grooves.
The phase shifter according to claim 2, wherein the insulating support is a support column, a side wall of the support column is provided with a flange, and the flange is in conflict with the bottom surface of the phase shift circuit .
The phase shifter according to claim 3, wherein the groove extends from one end of the metal cavity to the other end of the metal cavity.
The phase shifter according to claim 5, wherein the number of grooves provided on the top wall of the metal cavity are two and are spaced apart from each other; and the bottom wall of the metal cavity is provided with There are two grooves and they are arranged at intervals; the two grooves on the top wall surface of the metal cavity and the two grooves on the bottom wall surface are arranged in a one-to-one correspondence.
The phase shifter according to claim 5, wherein there are multiple insulating supports, multiple through holes on the phase shifting circuit, multiple insulating supports and multiple The through holes are arranged in one-to-one correspondence.
The phase shifter according to any one of claims 1 to 7, wherein the phase shifter further comprises a pull rod, the pull rod is connected to the sliding dielectric block; the insulating support is a plastic support, A rubber support, a silicone support or a wooden support; the phase shifter also includes a plurality of cables, and the plurality of the cables are arranged in a one-to-one correspondence with the plurality of signal terminals of the phase shift circuit; the metal cavity A plurality of installation openings are provided on the side wall surface corresponding to the plurality of the cables, the cables are arranged in the installation openings, and the inner core of the cable is electrically connected to the signal terminals of the phase shift circuit correspondingly, The outer conductor of the cable is electrically connected with the metal cavity.
A phase shifting power feeding device, characterized by comprising the phase shifter according to any one of claims 1 to 8, further comprising a feeding network board and a radiation unit, the phase shifting circuit is connected to the phase shifter through a cable. The feeding network board and the radiation unit are electrically connected.
An antenna device, characterized by comprising the phase-shifting power feeding device according to claim 9.