CN211125933U

CN211125933U - Waveguide phase shifter

Info

Publication number: CN211125933U
Application number: CN202020086289.4U
Authority: CN
Inventors: 何仲夏; 陈国胜; 梁稳; 刘锦霖
Original assignee: Shengweilun Shenzhen Communication Technology Co ltd
Current assignee: Shengweilun Shenzhen Communication Technology Co ltd
Priority date: 2020-01-15
Filing date: 2020-01-15
Publication date: 2020-07-28
Anticipated expiration: 2030-01-15

Abstract

The utility model provides a waveguide phase shifter, including first depressed part, the second depressed part, the flange ring, the locating pin, the gasket, wherein a plurality of depressed parts on two surfaces of gasket mutually support with a plurality of depressed parts of the surface of flange ring and move the phase, the flange ring all sets up the waveguide opening with the surface of gasket, waveguide open-ended shape can be circular, square, rhombus or trapezoidal arbitrary, the depressed part can adopt circular, square, the rhombus, trapezoidal, any kind of the ten thousand style of calligraphy of levogyration or the ten thousand style of calligraphy of dextrorotation, when moving the operation phase, rotate or the translation gasket, can realize moving the phase wantonly, the better industrial application who satisfies 30GHz ~1000GHz frequency electromagnetic wave. The utility model discloses an add the gasket in the middle of two waveguides and constitute and move the looks ware, and then rotation or translation gasket guarantee that the waveguide signal reveals the volume at controllable scope, and the transmission waveform is stable, good, and the better industry that satisfies is used.

Description

Waveguide phase shifter

Technical Field

The invention relates to the field of communication, in particular to a waveguide phase shifter applied to millimeter wave or microwave signal transmission.

Background

In the field of communication, a rectangular air waveguide or an air ridge waveguide is a common internal interconnection transmission line of a microwave system and is mainly used for interconnection and intercommunication of microwave system components, such as an amplifier, a mixer, a frequency multiplier, a detector, an antenna and the like. Traditional waveguide is mostly metal tubular structure, and this tubular structure cooperation flange ring makes things convenient for the alignment and the connection of waveguide, and flange ring size is often greater than the waveguide cross-section.

In the industry, a medium is often inserted into a waveguide to further change the phase of electromagnetic waves in the waveguide, but in a high-frequency waveguide, the processing difficulty of the inserted medium is increased because the inner diameter of the waveguide is small, and in addition, although the phase can be moved after the medium is inserted into the waveguide, the phase movement is not linear movement, so that the phase cannot be accurately controlled in practical industrial application.

In some application environments, a small phase shift is often required, for example, in a multi-power amplifier synthesizer, each sub-power amplifier module may have a small mismatch due to assembly or chip process shift. In order to achieve the best synthesis effect, a plurality of degree phase-adjustable mechanical phase shifters are added behind each power module, so that equal phase addition of all the power modules is guaranteed.

Published in IEEE on 3/5 of 2007, web site: https:// ieeexplore. ie. org/document/4118216, which discloses a 90 GHz waveguide phase shifter based on a rotating half-wave retarder, the rotating half-wave and two outer quarter-wave retarders made of iris polarizers, which is optimized for design using finite element analysis (Ansoft HFSS) and measured using millimeter wave VNA, which, although achieving a smooth phase shift in the 0.7/1.2deg range in the 80-95/75-100GHz range, has a large size for power amplifier power synthesis applications.

Therefore, there is a need to develop a waveguide phase shifter that can overcome the defects of the phase shifter in the prior art that the frequency is limited and the size is large, is convenient for the practical application of the industry, and can rotate the angle within a certain range.

Disclosure of Invention

In order to solve the problems, the invention provides a waveguide phase shifter based on metal gasket rotation and torsion, and the technical scheme of the invention is as follows:

a waveguide phase shifter comprises a first concave part, a second concave part, a flange ring, a positioning pin and a gasket, wherein the plurality of concave parts on the two surfaces of the gasket are matched with the plurality of concave parts on the outer surface of the flange ring to shift the phase.

Furthermore, waveguide openings are formed in the surfaces of the flange ring and the gasket, and the shape of each waveguide opening can be any one of a circle, a square, a diamond or a trapezoid.

Further, the concave part can be any one of a circle, a square, a diamond and a trapezoid.

Furthermore, the gasket can rotate within the range of 0-90 degrees around the axial direction clockwise or anticlockwise.

Further, the shim may also be translated for phase shifting.

Furthermore, a plurality of positioning pins are arranged on the gasket and used for fixing pins or screws.

Further, the outer circumference of the spacer may be a gear-like surface.

Furthermore, the working frequency of the phase shifter is 30GHz-1000 GHz.

Further, the gap between the first waveguide and the second waveguide is less than or equal to 50 um.

The phase shifter is formed by adding the gasket between the two waveguides, so that the phase shifter is rotated or translated, the leakage amount of the waveguide signal is ensured to be in a controllable range, the transmission waveform is stable and good, and the industrial application is better met.

Drawings

FIG. 1: the invention discloses a waveguide phase shifter structure.

FIG. 2: the invention discloses a gasket structure schematic diagram of a waveguide phase shifter.

FIG. 3: the invention relates to an adaptive schematic diagram of a waveguide phase shifter.

FIG. 4: a second embodiment of the waveguide phase shifter of the present invention.

FIG. 5: the invention relates to a section view of a waveguide phase shifter.

FIG. 6: s11 simulation plots using the waveguide phase shifter of the present invention.

FIG. 7: s21 simulation plots using the waveguide phase shifter of the present invention.

FIG. 8: and measuring the electromagnetic wave phase under different rotation angles and frequencies.

Detailed Description

Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, and while the invention will be described in connection with the preferred embodiments, it will be understood by those skilled in the art that these embodiments are not intended to limit the invention to these embodiments, but on the contrary, the invention is intended to cover alternatives, modifications and equivalents, which may be included within the spirit and scope of the invention as defined by the appended claims. Furthermore, in the following detailed description of the present invention, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, it will be apparent to those skilled in the art that the present invention may be practiced without these specific details.

Referring to fig. 1, a side view of a waveguide phase shifter structure of the present invention is shown, the waveguide phase shifter is composed of a first recess 10, a second recess 20, a flange ring 30, a positioning pin 40, and a spacer 50, wherein the spacer 50 can rotate around its central axis by a certain angle, for example, a rotation interval from 90 ° clockwise to 90 ° counterclockwise, so as to complete phase shifting, and a plurality of recesses are disposed on two surfaces of the spacer 50 for matching with the plurality of recesses on the surface of the flange ring 30; the number of the positioning pins 40 may be plural.

As a preferred embodiment, the phase shifter shown in fig. 1 is made of three thin metal sheets or any material with metalized surface, the shape of the flange ring 30 can be, for example, a standard UG386 flange interface on one surface, and a plurality of non-through holes on the other surface, and the two surfaces of the spacer 50 are provided with non-through concave holes and a waveguide port in the middle direction; the spacer 50 can rotate or laterally move, for example, the direction of the waveguide is set to be the Z axis, the rotation of the spacer 50 along the Z axis and the lateral movement of the X or Y axis can respectively realize different phase shifting functions, and the first recess 10 and the second recess 20 can both play a role in inhibiting the leakage of millimeter waves.

It will be understood by those skilled in the art that the shapes of the first and

second recesses

10 and 20 are not limited to the shape shown in fig. 1, and any one of a circular shape, a square shape, a diamond shape, a trapezoidal shape, a left-handed zigzag shape, and a right-handed zigzag shape may be used; accordingly, the shape of the gasket 50 is not limited to the shape shown in fig. 1, and may be a square, a diamond, a trapezoid, or the like.

Referring to fig. 2, a gasket structure of the waveguide phase shifter of the present invention is schematically shown, wherein a plurality of crescent-shaped first flange positioning holes 201 and second flange positioning holes 202 are added on the gasket 50, wherein the first flange positioning holes 201 are used for fixing external positioning pins, the second flange positioning holes 202 are used for fixing positioning pins and screws of the flange ring 30, and the first flange positioning holes 201 and the second flange positioning holes 202 are arranged to ensure that the gasket 50 rotates 90 ° in the forward direction or the reverse direction along the Z axis. In order to facilitate the actual operation, the outer circumference of the spacer 50 is provided with a gear-shaped structure, so that the spacer 50 can be conveniently rotated manually, and the precise operation of phase shifting is facilitated.

Referring to fig. 3, when the two flange rings 30 are adapted, the spacer 50 in the middle of fig. 3 is inserted therein to shift the phase, so as to form the right-side adapted diagram of fig. 3, and at this time, the spacer 50 is aligned with the waveguide openings of the two flange rings 30 accurately, so that the phase shifting effect is good.

Referring to FIG. 4, a second embodiment of the waveguide phase shifter of the present invention, for example, an air opening waveguide of 30GHz-1000GHz with 1.65mm x 0.86mm waveguide openings, is shown, where the spacer hole depth is 4.9mm, the hole diameter is 0.9mm, and the distance between holes is 1.1 mm. After the two flange rings 30 are assembled, the spacer 50 is rotated at a certain angle, and at this time, the spacer 50 has a certain angle difference with the waveguide openings of the two flange rings 30.

Referring to fig. 5, a cut-away view of the waveguide phase shifter of the present invention is shown, wherein a waveguide rubber opening 501 is disposed on the surfaces of two flange rings 30, the middle of the waveguide phase shifter is a joint of the two flange rings 30, and a certain gap 502 exists at the joint, for example, the gap 502 is a gap less than or equal to 50 um.

Referring to fig. 6, it can be seen that, when the rotation angle B of the spacer 50 is adapted from 10 ° to 20 ° to 30 °, the S11 parameter is compared with the waveform that is normally adapted, the offset is within the allowable range, so as to ensure good and stable signal transmission, and when the frequency of the electromagnetic wave changes between 30GHz and 1000GHz, the transmission waveform of the electromagnetic wave remains stable, and the phase shifting effect is good.

Referring to fig. 7, it can be seen that, when the rotation angle B of the spacer 50 is adapted from 10 ° to 20 ° to 30 °, the S21 parameter is compared with the waveform that is normally adapted, the offset is within the allowable range, so as to ensure good and stable signal transmission, and when the frequency of the electromagnetic wave changes between 30GHz and 1000GHz, the transmission waveform of the electromagnetic wave remains stable, and the phase shifting effect is good.

Referring to fig. 8, with reference to the measured values of the electromagnetic wave phases at different rotation angles and frequencies, when the frequency of the electromagnetic wave changes incrementally from 30GHz to 1000GHz at every 10GHz, the rotation angle of the spacer 50 is incremented at intervals of every 5 ° until the spacer rotates by 30 °, and the phase value of the electromagnetic wave transmission using the phase shifter of the present invention still maintains a good effect, which indicates that the phase shifter of the present invention has feasibility.

In particular, although fig. 6 to 8 only show illustrations of clockwise rotation by 30 degrees or counterclockwise rotation by 30 degrees, those skilled in the art can understand that the technical solution of the present invention can also be applied to applications of clockwise rotation by 90 degrees or counterclockwise rotation by 90 degrees, in such practical applications, both the S11 parameter and the S21 parameter are in a good transmission state, and similarly, the electromagnetic wave phase measurement value still maintains a good effect.

Claims

1. A waveguide phase shifter is characterized by comprising a first concave part, a second concave part, a flange ring, a positioning pin and a gasket, wherein the concave parts on two surfaces of the gasket are matched with the concave parts on the outer surface of the flange ring to shift the phase.

2. The waveguide phase shifter of claim 1 wherein the surfaces of the flange ring and the spacer are each provided with a waveguide opening, the waveguide opening being in the shape of any one of a circle, a square, a diamond or a trapezoid.

3. The waveguide phase shifter of claim 1 wherein the depression is one of circular, square, diamond, and trapezoidal.

4. The waveguide phase shifter of claim 1 wherein the spacer is rotatable about an axis in a range of 0 to 90 degrees clockwise or counterclockwise.

5. The waveguide phase shifter of claim 1 wherein the spacer is further translatable to shift the phase.

6. The waveguide phase shifter of claim 1 wherein the spacer is provided with a plurality of alignment pins for securing pins or screws.

7. The waveguide phase shifter of claim 1 wherein the outer circumference of the spacer is a gear-like surface.

8. The waveguide phase shifter of claim 1 wherein the phase shifter operates at a frequency of 30GHz to 1000 GHz.

9. The waveguide phase shifter of claim 1 wherein there are two flange rings and the gap between the flange rings is equal to or less than 50 um.