WO2018120618A1

WO2018120618A1 - Miniaturised single-step phase shifter

Info

Publication number: WO2018120618A1
Application number: PCT/CN2017/085880
Authority: WO
Inventors: 郑斯萍; 邓泽阳; 黄勇; 许永超; 蔡贵鸿
Original assignee: 深圳国人通信股份有限公司
Priority date: 2016-12-27
Filing date: 2017-05-25
Publication date: 2018-07-05

Abstract

The present invention relates to a miniaturised single-step phase shifter comprising a lower grounding plate, an upper grounding plate installed on the lower grounding plate, and a first phase-shifting power-splitting network and a second phase-shifting power-splitting network located between the lower grounding plate and the upper grounding plate, wherein the first and second phase-shifting power-splitting networks are provided in a staggered manner along the longitudinal direction of the lower grounding plate and are arranged along the transverse direction of the lower grounding plate; the first phase-shifting power-splitting network comprises a first metal strip-shaped wire and a first dielectric sliding block installed on the lower grounding plate, and the first dielectric sliding block is provided on the first metal strip-shaped wire and can slide along the transverse direction of the first metal strip-shaped wire; the second phase-shifting power-splitting network comprises a second metal strip-shaped wire and a second dielectric sliding block installed on the lower grounding plate, and the second dielectric sliding block is provided on the second metal strip-shaped wire and can slide along the transverse direction of the second metal strip-shaped wire; and the first and second dielectric sliding blocks are mutually staggered along the longitudinal direction of the lower grounding plate. The present invention has a compact structure, is small in volume, and is light in weight, and has good amplitude and phase characteristics.

Description

Title of Invention: A Miniaturized Single Step Phase Shifter

Technical field

[0001] The present invention relates to the field of mobile communication base station antenna technologies, and in particular, to a miniaturized single-step phase shifter.

[0002] In recent years, with the rapid increase in the number of mobile users, the communication system is constantly updating and expanding, and higher and higher requirements are placed on the design of the antenna. On the one hand, the antenna is required to be broadband and multi-frequency, and the same is satisfied. Communication requirements for multiple systems; on the other hand, multiple system sharing is required to reduce the number of antennas to reduce interference between antennas and reduce costs. The phase shifter is the core component of the base station's ESC antenna. Its performance and size directly determine the performance, size and network layout of the base station antenna. At present, the single-step phase shifter is still one of the commonly used phase shifters in base station ESC antennas. The core problem of single-step phase shifter design is to continuously optimize the phase shifter structure design and optimize the phase shifting power division network. The design makes the phase shifter compact, small in size and light in weight, and has excellent amplitude and phase characteristics to meet the application requirements of ultra-wideband miniaturized base station ESC antennas and multi-frequency ESC antennas.

technical problem

Problem solution

Technical solution

[0003] The object of the present invention is to overcome the deficiencies of the above techniques and to provide a miniaturized single-step phase shifter that is compact in structure, small in size, light in weight, and has better amplitude phase characteristics.

[0004] A single-step phase shifter provided by the present invention includes a lower grounding plate, an upper grounding plate mounted to the lower grounding plate, and a first phase shifting power dividing network between the lower grounding plate and the upper grounding plate. a second phase shifting power division network, wherein the first and second phase shifting power dividing networks are disposed along a longitudinal offset of the lower grounding plate and are arranged along a lateral direction of the lower grounding plate; the first phase shifting power dividing network a first metal strip line and a first dielectric slider mounted to the lower ground plate, the first dielectric slider being disposed on the first metal strip line and along the first metal strip Sliding in a lateral direction of the line; the second phase shifting power distribution network includes a second metal strip line and a second medium slider mounted to the lower ground plate, and the second medium slider is disposed at the The two metal strip lines are slidable in a lateral direction of the second metal strip line; the first and second medium sliders are mutually offset along a longitudinal direction of the lower ground plate.

[0005] Further, further comprising a pull rod mounted to the lower grounding plate, the pull rod is located between the first and second phase shifting power dividing networks, and is slidable along a longitudinal direction of the lower grounding plate, and A first guiding chute and a second guiding chute corresponding to the first and second medium sliding blocks are respectively provided.

[0006] Further, in the first and second media sliders, each of the media sliders includes an upper dielectric block and a lower dielectric block connected together by a connecting member, and the upper dielectric block and the lower dielectric block a gap exists to receive a corresponding portion of the pull rod and a corresponding metal strip line, the connecting member of the first medium slider is disposed in the corresponding first guiding chute, the second medium slider The connecting member is disposed in the corresponding second guiding chute; the side of the lower dielectric block away from the pull rod is provided with a transverse groove, and the lower ground plate is provided with a positioning member corresponding to the transverse groove The positioning member protrudes into the corresponding lateral groove; when the pull rod slides along the longitudinal direction of the lower ground plate, the first and second media sliders respectively drive the first one along the first The second guiding chute slides.

Further, the first guiding chute and the second guiding chute are inclined in opposite directions, so that the first and second medium sliding blocks slide in opposite directions.

[0008] Further, one end of the pull rod is provided with a handle, and the handle protrudes out of the lower ground plate.

[0009] Further, the two ends of the pull rod are respectively provided with positioning slots, and the lower grounding plate is provided with a pull rod positioning member corresponding to the positioning slot, and the pull rod positioning member is disposed in the corresponding positioning slot. The pull rod is longitudinally slidable along the positioning groove on the lower ground plate.

[0010] Further, the connecting member includes a positioning pin disposed on the upper dielectric block and a positioning shaft disposed on the lower dielectric block, the positioning shaft has a positioning hole, the positioning pin and the positioning hole Cooperate.

[0011] Further, the first phase shifting power dividing network further includes a first feeder base connected to the first metal strip line, and the second phase shifting power dividing network further includes the second metal a second feeder base connected by the strip line, the upper end and the lower end of the first and second feeder bases respectively abut the upper ground plate and the lower ground plate; the first and second feeder seats respectively and the The upper ground plate and the lower ground plate are mounted together by fasteners

[0012] Further, the first and second metal strip lines are respectively mounted to the lower ground plate by a fixing member.

[0013] Further, the fixing member includes an insulating mat and an insulating member, and the insulating mat has a matching with the insulating member Assembly holes.

Advantageous effects of the invention

Beneficial effect

[0014] The invention is small in size, light in weight, compact in structure, low in cost, and has better amplitude and phase characteristics, and can meet the application requirements of ultra-wideband miniaturized base station ESC antennas and multi-frequency ESC antennas.

Brief description of the drawing

DRAWINGS

1 is a schematic diagram of a miniaturized single-step phase shifter provided by the present invention;

2 is a schematic view showing the branching of the upper grounding plate of the miniaturized single-step phase shifter shown in FIG. 1;

3 is a partial schematic view showing the branching of the upper grounding plate of the miniaturized single-step phase shifter shown in FIG. 1;

4 is a schematic view of a drawbar of the miniaturized single-step phase shifter shown in FIG. 1;

5 is a partial assembly diagram of a metal strip line and a medium slider of the miniaturized single-step phase shifter shown in FIG. 1.

6 is a partial assembly view of the drawbar and the medium slider of the miniaturized single-step phase shifter shown in FIG. 1;

[0021] FIG. 7 is a partial schematic view of the miniaturized single-step phase shifter of FIG.

[0022] FIG. 8 is a partial assembly view of the metal strip line and the lower ground plate of the miniaturized single-step phase shifter shown in FIG.

Embodiments of the invention

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

1, FIG. 2 and FIG. 3, the present invention provides a miniaturized single-step phase shifter comprising a lower grounding plate 1, an upper grounding plate 2 mounted to the lower grounding plate 1, and a lower grounding plate. 1 and the first phase shifting power division network 3, the second phase shifting power dividing network 4, and the drawbar 5 between the upper grounding plate 2. Both the lower grounding plate 1 and the upper grounding plate 2 are metal ground plates or copper-clad PCB boards. In this embodiment, the structures of the first phase shifting power division network 3 and the second phase shifting power dividing network 4 are the same. Of course, the structures of the first phase shifting power division network 3 and the second phase shifting power dividing network 4 may be different. The first phase shifting power division network 3 and the second phase shifting power dividing network 4 may also be provided in plurality. [0025] The first phase shifting power division network 3 and the second phase shifting power dividing network 4 are disposed along the longitudinal misalignment of the lower grounding plate 1 and are arranged along the lateral direction of the lower grounding plate 1. The prior art phase shifting power division networks generally adopt a longitudinal side by side arrangement, which makes the phase shifter have a large lateral dimension, and is not suitable for use in a miniaturized antenna and a multi-frequency antenna, and the phase shifting power of the present invention The longitudinal misalignment between the sub-networks can greatly reduce the lateral size of the phase shifter, making the phase shifter smaller and more compact. The first phase shifting power division network 3 includes a first metal strip line 31, a first dielectric slider 32, and a first feeder holder 33 mounted to the lower ground plate 1. The first dielectric slider 32 is disposed on the first metal strip line 31 and slidable in the lateral direction of the first metal strip line 31. The second phase shifting power dividing network 4 includes a second metal strip line 41, a second medium slider 42 and a second feeder line 43 mounted to the lower grounding plate 1. The second medium slider 42 is disposed on the second metal strip line 41 and slidable in the lateral direction of the second metal strip line 41. The number of the first medium slider 32 and the second medium slider 42 can be set according to actual conditions. The first medium slider 32 and the second medium slider 42 are mutually offset in the longitudinal direction of the lower ground plate 1. The first feeder holder 33 is connected to the first metal strip line 31, and the upper end and the lower end of the first feeder holder 33 abut against the upper ground plate 2 and the lower ground plate 1, respectively. The first feeder seat 33 and the lower grounding plate 2 are grounded together by fasteners. Specifically, the fastener includes a screw and a nut, and the screw is sequentially fastened through the upper grounding plate 2, the first feeder seat 33, and the lower grounding plate 1 to be fastened with the nut, thereby the upper grounding plate 2, the first feeder seat 33, and the lower The ground plates 1 are mounted together, the second feeder block 43 is connected to the second metal strip line 41, and the upper and lower ends of the second feeder block 43 are respectively abutted to the upper ground plate 2 and the lower ground plate 1. The second feeder base 43 and the upper grounding plate 2 and the lower grounding plate 1 are mounted together by fasteners. The manner in which the fasteners mount the second feeder block 43, the upper grounding plate 2, and the lower grounding plate 1 in the same manner as the first feeder block 33, the upper grounding plate 2, and the lower grounding plate 1 is installed. Let me repeat.

[0026] As shown in FIG. 3 and FIG. 4, the pull rod 5 is mounted to the lower grounding plate 1, between the first phase shifting power division network 3, the second phase shifting power dividing network 4, and along the lower grounding plate 1. Slide vertically. The pull rod 5 is provided with a first guiding chute 51 and a second guiding chute 52 corresponding to the first medium slider 32 and the second medium slider 42, respectively. The two ends of the tie rods 5 are respectively provided with a positioning groove 54. The lower grounding plate 1 is provided with a pull rod positioning member 11 corresponding to the positioning groove 54. The pull rod positioning member 11 is disposed in the corresponding positioning groove 54. The pull rod 5 can be along the positioning groove 54. Slides longitudinally on the lower ground plate 1. Wherein, one end of the pull rod 5 is provided with a handle 53, and the pull rod 5 is integrally formed, and the handle 53 extends out of the grounding plate 1 to facilitate pulling the pull rod 5.

[0027] As shown in FIG. 5 and FIG. 6, in the first medium slider 32 and the second medium slider 42, each of the media sliders is packaged. An upper dielectric block 321 and a lower dielectric block 322 joined together by a connector. There is a gap between the upper dielectric block 321 and the lower dielectric block 322 to accommodate the corresponding portion of the tie rod 5 and the corresponding metal strip line. The connecting member of the first medium sliding block 32 is disposed in the corresponding first guiding chute 51, and the connecting member of the second medium sliding block 42 is disposed in the corresponding second guiding chute 52. The side of the lower dielectric block 322 away from the tie rod 5 is provided with a transverse groove 3221, and the lower ground plate 1 is provided with a positioning member 35 corresponding to the transverse groove 3221, and the positioning member 35 projects into the corresponding lateral groove 3221. The transverse groove 3221 is located in the middle of the lower dielectric block 322. When the pull rod 5 slides along the longitudinal direction of the lower ground plate 1, the positioning member 35 restricts the longitudinal movement of the corresponding medium slider along the lower ground plate 1, so that under the action of the connecting member, the pull rod 5 only drives the first medium slider respectively. 32. The second medium slider 42 slides along the corresponding first guiding chute 51 and the second guiding chute 52, so that the first dielectric slider 32 and the second dielectric slider 42 are respectively along the first metal strip line. 31. The effect of sliding the second metal strip line 41 in the lateral direction to change the first dielectric slider 32 and the second dielectric block 41 on the first metal strip line 31 and the second metal strip line 41, respectively. The amount of coverage changes the equivalent dielectric constant of the first metal strip line 31 and the second metal strip line 41, thereby realizing the function of changing the phase.

[0028] The connecting member includes a positioning pin 323 disposed on the upper dielectric block 321 and a positioning shaft 324 disposed on the lower dielectric block 322. The positioning shaft 324 has a positioning hole, and the positioning pin 323 cooperates with the positioning hole, thereby placing the upper dielectric block 321 and the lower portion. The dielectric blocks 322 are connected together. The connector may also include, for example, a positioning shaft disposed on the upper dielectric block 321 and a positioning pin disposed on the lower dielectric block 322. The positioning shaft has a positioning hole, and the positioning pin is engaged with the positioning hole.

In the embodiment, the first guiding chute 51 and the second guiding chute 52 are oppositely inclined, so that the first medium slider 32 and the second medium slider 42 slide in opposite directions. Thus, when the pull rod 5 slides along the longitudinal direction of the lower grounding plate 1, the first medium sliding block 32 and the second medium sliding block 42 slide along the corresponding first guiding chute 51 and the second guiding chute 52, and the first medium slides. The distance between the block 32 and the second medium slider 42 is not large, and the longitudinal dimension of the phase shifter can be further reduced, and the volume is reduced.

[0030] In this embodiment, the first guiding chute 51 and the second guiding chute 52 are respectively two. Correspondingly, the connecting member of the first medium slider 32 and the connecting member of the second dielectric slider 42 are also two, and the two ends of the corresponding upper dielectric block 321 and the two ends of the lower dielectric block 322 are respectively connected together. In each of the medium sliders, as shown in FIG. 6, one of the connecting members includes a positioning pin 323 disposed at the end of the upper dielectric block 321 and a positioning shaft 324 disposed at a corresponding end of the lower dielectric block 322, and the other connecting member includes A positioning shaft 3 24 at the other end of the dielectric block 321 and a positioning pin 323 disposed at the other end of the lower dielectric block 322. Two connections of the first medium slider 32 The pieces are respectively disposed in the two first guiding chutes 51, and the two connecting members of the second medium sliding block 42 are respectively disposed in the two second guiding chutes, such that the first medium slider 32 and the second medium The sliding of the slider 42 along the corresponding first guiding chute 51 and the second guiding chute 52 is relatively smooth.

[0031] The left side of FIG. 7 is a partial schematic view of the first dielectric slider 32 and the second dielectric slider 42 not sliding on the first metal strip line 31 and the second metal strip line 41, respectively. The right side is a partial schematic view of the first dielectric slider 32 and the second dielectric slider 42 sliding on the first metal strip line 31 and the second metal strip line 41. The first dielectric slider 32 does not slide on the first metal strip line 31 and completely covers the first metal strip line 31. The second dielectric slider 42 is not slid on the second metal strip line 41 and completely covers the second Metal strip line 41. When the handle 53 of the pull rod 5 is pulled and the pull rod 5 is slid along the longitudinal direction of the lower ground plate 1, the pull rod 5 drives the first medium sliding block 32 and the second medium sliding block 42 along the corresponding first guiding chute 51 and the second guiding. The chute 52 slides to achieve the effect of sliding the first medium slider 32 and the second medium slider 42 in the lateral direction of the first metal strip line 31 and the second metal strip line 41, so that the first medium slider 32 is provided. The second medium slider 42 completely removes the first metal strip line 31 and the second metal strip line 41, and the second medium slide is changed by changing the coverage of the first medium slider 32 on the first metal strip line 31. The amount of coverage of the block 42 on the second metal strip line 41 changes the equivalent dielectric constant of the first metal strip line 31 and the second metal strip line 41, and changes the phase of each output port to achieve adjustment under the antenna. The function of the tilt angle.

Referring to FIG. 8, the first metal strip line 31 and the second metal strip line 41 are respectively mounted to the lower ground plate 1 through the fixing members 34. The fixing member 34 includes an insulating pad 341 and an insulating member 342. After the first metal strip line 31 is specifically mounted, the lower end of the insulating pad 341 is first mounted into the mounting hole of the lower ground plate 1, and the first metal strip line 31 is attached to the upper end of the insulating pad 341, and the insulating member is attached. The 342 is fitted through the first metal strip line 31 to the insulating pad 341, thereby mounting the first metal strip line 31 to the lower ground plate 1, and the first metal strip line 31 has a through hole through which the insulating member 342 passes. The method of mounting the second metal strip line 41 is the same as the method of mounting the first metal strip line 31, and will not be described herein. Preferably, the insulating pad 341 is a plastic pad, and the insulating member 342 is a plastic nail.

[0033] The invention has the advantages of simple structure, small size, easy assembly, stable performance, low cost, and better amplitude and phase characteristics, and can meet the application requirements of ultra-wideband miniaturized base station ESC antennas and multi-frequency ESC antennas. .

The above embodiments are merely illustrative of the preferred embodiments of the present invention, and the description thereof is not to be construed as limiting the scope of the invention. It should be noted that for the ordinary in the field A person skilled in the art can make several modifications and improvements, such as combining different features in various embodiments, etc., without departing from the spirit and scope of the invention.

Claims

Claim

[Claim 1] A single-step phase shifter comprising a lower grounding plate, an upper grounding plate mounted to the lower grounding plate, and a first phase shifting power dividing network and a second between the lower grounding plate and the upper grounding plate a phase shifting power dividing network, wherein: the first and second phase shifting power dividing networks are disposed along a longitudinal offset of the lower grounding plate and are arranged along a lateral direction of the lower grounding plate; The sub-network includes a first metal strip line mounted to the lower ground plane and a first dielectric slider, the first dielectric slider being disposed on the first metal strip line and along the first metal Sliding in a lateral direction of the strip line; the second phase shifting power dividing network includes a second metal strip line and a second medium slider mounted to the lower ground plate, the second medium slider being disposed in the a second metal strip line and slidable in a lateral direction of the second metal strip line; the first and second medium sliders are mutually offset along a longitudinal direction of the lower ground plane.

[Claim 2] The miniaturized single-step phase shifter according to claim 1, further comprising: a pull rod mounted to the lower ground plate, the pull rod being located at the first and second phase shifting The power dividing networks are slidable along the longitudinal direction of the lower grounding plate, and are provided with first guiding chutes and second guiding chutes respectively corresponding to the first and second medium sliding blocks.

[Claim 3] The miniaturized single-step phase shifter according to claim 2, wherein: the first

In the second medium slider, each of the media sliders includes an upper dielectric block and a lower dielectric block connected together by a connecting member, and a gap exists between the upper dielectric block and the lower dielectric block to receive the corresponding of the drawbar And a corresponding metal strip line, the connecting member of the first medium slider is disposed in the corresponding first guiding chute, and the connecting member of the second medium sliding block is disposed in the corresponding a second guiding chute; a side of the lower dielectric block away from the pull rod is provided with a transverse groove, and the lower ground plate is provided with a positioning member corresponding to the transverse groove, and the positioning member extends into the corresponding position In the lateral groove, when the pull rod slides along the longitudinal direction of the lower ground plate, the first and second medium sliders can be respectively slid along the corresponding first and second guide chutes.

[Claim 4] The miniaturized single-step phase shifter according to claim 3, wherein: the first guiding chute and the second guiding chute are inclined in opposite directions, thereby causing the first, The second media slide slides in the opposite direction.

[Claim 5] The miniaturized single-step phase shifter according to claim 2, wherein: one end of the pull rod is provided with a handle, and the handle extends beyond the lower ground plate.

[Claim 6] The miniaturized single-step phase shifter according to claim 2, wherein: the two ends of the pull rod are respectively provided with positioning slots, and the lower grounding plate is provided corresponding to the positioning slot The pull rod positioning member is disposed in the corresponding positioning groove, and the pull rod is longitudinally slidable along the positioning groove on the lower ground plate.

[Claim 7] The miniaturized single-step phase shifter according to claim 3, wherein: the connecting member includes a positioning pin disposed on the upper dielectric block and a positioning disposed on the lower dielectric block a shaft, the positioning shaft has a positioning hole, and the positioning pin cooperates with the positioning hole.

[Claim 8] The miniaturized single-step phase shifter according to claim 1, wherein: the first phase shifting power dividing network further comprises a first feeder base connected to the first metal strip line The second phase shifting power dividing network further includes a second feeder seat connected to the second metal strip line, and the upper end and the lower end of the first and second feeder line bases respectively abut the upper grounding board And a grounding plate; the first and second feeder seats are respectively mounted with the upper grounding plate and the lower grounding plate by fasteners.

[Claim 9] The miniaturized single-step phase shifter according to claim 1, wherein: the first

And the second metal strip line is respectively mounted to the lower ground plate by a fixing member.

[Claim 10] The miniaturized single-step phase shifter according to claim 9, wherein: the fixing member includes an insulating mat and an insulating member, and the insulating mat has a fitting hole that cooperates with the insulating member