CN107819173A - A kind of structure for eliminating waveguide R type microwave switch spurious resonances - Google Patents
A kind of structure for eliminating waveguide R type microwave switch spurious resonances Download PDFInfo
- Publication number
- CN107819173A CN107819173A CN201710960453.2A CN201710960453A CN107819173A CN 107819173 A CN107819173 A CN 107819173A CN 201710960453 A CN201710960453 A CN 201710960453A CN 107819173 A CN107819173 A CN 107819173A
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- Prior art keywords
- waveguide
- type microwave
- absorbing material
- switch
- spurious resonances
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/10—Auxiliary devices for switching or interrupting
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- Non-Reversible Transmitting Devices (AREA)
Abstract
The present invention proposes a kind of structure for eliminating waveguide R type microwave switch spurious resonances, utilize the electromagnetic nature of waveguide R type microwave switches, absorbing material is added on microwave switch base so that the resonant frequency of idle passage is absorbed, so that it does not interfere with the radio frequency transmission characteristic of service aisle.45 degree angular positions of the position of absorbing material in two neighboring waveguide port.When the curved channels operation of waveguide R type microwave switches, absorbing material sponges the resonant frequency of straight channel；When waveguide R type microwave switches straight channel works, absorbing material sponges the resonant frequency of curved passage.Structure of the present invention is capable of the working frequency of effective broadening waveguide switch, and structure can realize that form is simple, easy processing, will not give and switch other performance indications and bring influence.
Description
Technical field
The present invention relates to a kind of structure for eliminating waveguide R type microwave switch spurious resonances, belong to microwave passive product scope.
Background technology
Waveguide R type microwave switches have the characteristics of working condition is more, are one of key components and parts of Satellite Payloads, its
Major function is that radio-frequency channel is switched over, and the hardware of fixed qty is carried out into ring backup by switching, realization more connects
State is connect, when fractional hardware breaks down, by the switching of microwave switch working condition, backup hardware in system is substituted into event
Hinder hardware, improve the reliability of whole star.Four working conditions of waveguide R switches are as shown in Figure 1.
As communication in recent years, aeronautical satellite require payload channel capacity cumulative year after year, radio-frequency unit work band
Wide requirement is more and more wide, and this is just brought how under the requirement of effective volume and weight, realizes that waveguide switch filled band is wide
This key issue.
Mechanical waveguide switch is mainly made up of three parts：Control section, drive part, radio frequency part.Radio frequency part by
Radio frequency base and radio frequency rotating shaft are formed, and radio frequency rotating shaft is driven by motor and rotated.The operation principle of switch is control circuit hair
Go out instruction, motor drives radio frequency rotating shaft to be rotated in radio-frequency cavity according to control instruction, so as to realize the switching of on off state.
Waveguide R types microwave switch has 4 working conditions, by four port different combinations of passage and base of rotating shaft
Specific 4 working conditions are realized, when curved channels operation in rotating shaft, straight channel is in idle state, and now straight channel is humorous
Vibration frequency can give the radio frequency band of curved passage influence, and when similarly straight channel works, curved passage is in idle state, curved passage it is humorous
Vibration frequency equally can bring influence to the radio frequency transmission of straight channel.
The content of the invention
The technical problem to be solved in the present invention is：In view of the shortcomings of the prior art, there is provided one kind eliminates waveguide R type microwaves and opened
The structure of spurious resonance is closed, using the electromagnetic nature of waveguide R type microwave switches, is added on microwave switch base and inhales ripple material
Material so that the resonant frequency of idle passage is absorbed, so that it does not interfere with the radio frequency transmission characteristic of service aisle.
The present invention includes following technical scheme：
A kind of structure for eliminating waveguide R type microwave switch spurious resonances, absorbing material is added in waveguide R type microwave switches
So that the resonant frequency of idle passage is absorbed.
Absorbing material is added on the base of waveguide R type microwave switches.
The position of absorbing material is clipped between waveguide R type microwave switches port.
45 degree angular positions of the position of absorbing material in two neighboring waveguide port.
When the curved channels operation of waveguide R type microwave switches, absorbing material sponges the resonant frequency of straight channel；Work as ripple
When leading the work of R type microwave switches straight channel, absorbing material sponges the resonant frequency of curved passage.
The absorbing material uses ferrite wave-absorbing material.
The absorbing material cross section is that rectangle, semicircle, class be trapezoidal or similar round.
When absorbing material cross section is rectangle, the width of rectangular cross section is 5.8mm, length 19.05mm, absorbing material
Thickness be 2mm；When absorbing material cross section is semicircle, its thickness is 2mm, radius 2.9mm.
The trapezoidal absorbing material thickness of class is 2mm, such trapezoidal absorbing material cross section include isosceles trapezoid part and
Rectangle part, rectangle part are connected with the base of waveguide R type microwave switches, a length of 3.8mm in upper bottom of isosceles trapezoid, bottom length
5.8mm, base angle are 45 degree, and the long side of rectangle part is identical with the bottom length of isosceles trapezoid, width edge length 1mm.
The absorbing material thickness of similar round is 6mm, and the absorbing material cross section of the similar round includes circular portion and rectangle
Part, the radius of circular portion is 2.5mm, and rectangle part is connected with the base of waveguide R type microwave switches, and the length of rectangle part
While it is 3mm, short side 0.8mm.
Compared with prior art, the structure proposed by the present invention for eliminating waveguide R type microwave switch spurious resonances has as follows
Advantage：
(1) mode of resonance of idle passage is switched because absorbing waveguide R, can be effectively by the working frequency of its waveguide switch
Broadening, it is workable using convenient, in requirement of the Satellite Payloads to radio frequency operation bandwidth ever-increasing today, have
Very high application value.
(2) this method significant effect is utilized, it is easy to operate simple, no longer stick to what is slotted in existing method in rotating shaft
Mode.
Brief description of the drawings
Fig. 1 is four working conditions of waveguide R switches.
Fig. 2 (a) is the profile of waveguide switch bend connected state after addition absorbing material；
Fig. 2 (b) is the profile of waveguide Switch Cut-through state after addition absorbing material；
Fig. 3 is the size of rectangular cross section absorbing material of the present invention；
Fig. 4 (a), (b), (c), (d) are respectively four kinds of achievable forms of absorbing material structure of the present invention；
Fig. 5 is ordinary tap measuring transmission loss result；
Fig. 6 is the test result added in switch after absorbing material.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings and the specific embodiments.
The present invention relates to a kind of structure for eliminating waveguide R type microwave switch spurious resonances, waveguide can be effectively improved and opened
Isolation is closed, and more particularly to the radio-frequency transmission channels of BJ120 waveguide R type microwave switches.
The present invention utilizes the electromagnetic nature of waveguide R type microwave switches, adds absorbing material on microwave switch base, makes
The resonant frequency of passage of must leaving unused is absorbed, so that it does not interfere with the radio frequency transmission characteristic of service aisle.
Absorbing material is added on the base of waveguide R type microwave switches and make it that the resonant frequency of idle passage is absorbed, is inhaled
The position of wave material is clipped between waveguide switch port, and further, the position of absorbing material is in two neighboring waveguide port
45 degree of angular positions, as shown in Fig. 2 (a), (b).
When the curved channels operation of waveguide R type microwave switches, absorbing material sponges the resonant frequency of straight channel；Work as ripple
When leading the work of R type microwave switches straight channel, absorbing material sponges the resonant frequency of curved passage.
As shown in Table 1 and Table 2, with the result of calculation of straight-through and curved passage resonant frequency, the present invention is done with explanation.It is former
BJ120 waveguide switch ideal operation 10.5~15GHz of frequency, shaft diameter 21mm, when curved channels operation, straight channel it is humorous
Vibration frequency can bring influence to the radiofrequency characteristicses of curved passage, and the TE102 mode resonance frequencies for now calculating straight channel fall in work
In the range of working frequency.Table 2 is the result of calculation of the resonant frequency of curved passage, it can be seen that the resonant frequency for having TE101 patterns falls
In the operating frequency range of switch, absorbing material is added in switch pedestal, with shown in Fig. 2.
Mode of resonance corresponding to the straight channel of table 1
| Pattern | Resonant frequency (GHz) |
| Pattern 1 (TE101 moulds) | 9.47 |
| Pattern 2 (TE102 moulds) | 14.14 |
| Pattern 3 (TE201 moulds) | 16.58 |
| Pattern 4 (TE103 moulds) | 19.61 |
| Pattern 5 (TE202 moulds) | 19.75 |
| Pattern 6 (TE203 moulds) | 23.99 |
Mode of resonance corresponding to 2 curved passage of table
| Pattern | Resonant frequency (GHz) |
| Pattern 1 (TE101 moulds) | 10.36 |
| Pattern 2 (TE102 moulds) | 16.69 |
| Pattern 3 (TE201 moulds) | 17.11 |
| Pattern 4 (TE103 moulds) | 21.55 |
| Pattern 5 (TE202 moulds) | 22.36 |
| Pattern 6 (TE203 moulds) | 24.54 |
Three passages, respectively two curved passages and a straight channel are shared on waveguide R switch shafts, in actual applications
During two curved channels operations, straight channel is left unused；When straight channel works, curved passage leaves unused.Motor driven axis of rotation realizes work
The switching of passage.Absorbing material of the present invention is added on waveguide switch base, and transmission channel is not influenceed, using suction ripple
Material rotating shaft can the be left unused resonant frequency of passage sponges, and the resonant frequency no longer passes through rotating shaft and the gap transmission of base
Output port so that the working frequency of waveguide switch obtains broadening, this method does not influence other moulds inside waveguide switch
The design of block, the design of drive mechanism can maintain original design, the influence to other modules can be minimized.
Waveguide switch radio-frequency transmission channels are the form of 1/4 wavelength impedance conversion, and structure of the present invention is added in waveguide
In switch pedestal, transmission channel is not influenceed, the resonant frequency of rotating shaft inoperative passage can be sponged using the structure,
And the design of other modules inside waveguide switch is not influenceed, the design of drive mechanism can maintain original design, can be right
The influence of other modules is minimized.
For waveguide switch radio-frequency transmission channels profile as shown in Fig. 2 wherein INPUT is input port, OUTPUT is output
Port, ISOLATE are isolated port.Rotating shaft, which rotates to an angle, completes the switching of different conditions, realizes the conversion of port role.
Fig. 4 (a), (b), (c), shown in (d), absorbing material cross section is that rectangle, semicircle, class be trapezoidal or similar round.
When absorbing material cross section is rectangle, the width of rectangular cross section is 5.8mm, length 19.05mm, absorbing material
Thickness be 2mm；When absorbing material cross section is semicircle, its thickness is 2mm, radius 2.9mm.
The trapezoidal absorbing material thickness of class is 2mm, such trapezoidal absorbing material cross section include isosceles trapezoid part and
Rectangle part, rectangle part are connected with the base of waveguide R type microwave switches, a length of 3.8mm in upper bottom of isosceles trapezoid, bottom length
5.8mm, base angle are 45 degree, and the long side of rectangle part is identical with the bottom length of isosceles trapezoid, width edge length 1mm.
The absorbing material thickness of similar round is 6mm, and the absorbing material cross section of the similar round includes circular portion and rectangle
Part, the radius of circular portion is 2.5mm, and rectangle part is connected with the base of waveguide R type microwave switches, and the length of rectangle part
While it is 3mm, short side 0.8mm.
According to structure of the present invention, the base of a BJ120 waveguide switches is added into absorbing material.Absorbing material has
Body position is rectangle in the centre of two waveguide mouths of base, absorbing material cross section, and specific size is as follows：Cross-sectional width a=
5.8mm, cross-section lengths h=19.05mm, thickness b=2mm, as shown in Figure 3.Resonant frequency is straight-through before adding absorbing material
TE102 moulds resonant frequency resonant frequency after 14.14GHz, addition absorbing material in road is wholly absent, and front and rear contrast effect is very bright
It is aobvious, waveguide switch working frequency can be made to realize 10.5~15GHz.The absorbing material that this example uses for ferrite wave-absorbing material,
Specific material specification model：MF124.
Structure of the present invention is applied in waveguide microwave switch, adds front and rear contrast, schematic diagram such as Fig. 5 and Fig. 6 institutes
Show, the obvious broadening of bandwidth of operation, spurious resonance has eliminated, and isolation is better than 60dB, but shaft diameter and switchs other portions
Divide and do not change, so as to which changer drive system need not do any change, greatly enhance design efficiency.
The content that the present invention is not described in detail belongs to the common knowledge of those skilled in the art.
Claims (10)
- A kind of 1. structure for eliminating waveguide R type microwave switch spurious resonances, it is characterised in that：Add in waveguide R type microwave switches Enter absorbing material so that the resonant frequency of idle passage is absorbed.
- A kind of 2. structure for eliminating waveguide R type microwave switch spurious resonances according to claim 1, it is characterised in that：Inhale Wave material is added on the base of waveguide R type microwave switches.
- A kind of 3. structure for eliminating waveguide R type microwave switch spurious resonances according to claim 2, it is characterised in that：Inhale The position of wave material is clipped between waveguide R type microwave switches port.
- A kind of 4. structure for eliminating waveguide R type microwave switch spurious resonances according to claim 3, it is characterised in that：Inhale 45 degree angular positions of the position of wave material in two neighboring waveguide port.
- 5. according to it is according to any one of claims 1 to 4 it is a kind of eliminate waveguide R type microwave switch spurious resonances structure, its It is characterised by：When the curved channels operation of waveguide R type microwave switches, absorbing material sponges the resonant frequency of straight channel；When When waveguide R type microwave switches straight channel works, absorbing material sponges the resonant frequency of curved passage.
- 6. according to it is according to any one of claims 1 to 4 it is a kind of eliminate waveguide R type microwave switch spurious resonances structure, its It is characterised by：The absorbing material uses ferrite wave-absorbing material.
- 7. according to it is according to any one of claims 1 to 4 it is a kind of eliminate waveguide R type microwave switch spurious resonances structure, its It is characterised by：The absorbing material cross section is that rectangle, semicircle, class be trapezoidal or similar round.
- A kind of 8. structure for eliminating waveguide R type microwave switch spurious resonances according to claim 7, it is characterised in that：Inhale When wave material cross section is rectangle, the width of rectangular cross section is 5.8mm, length 19.05mm, and the thickness of absorbing material is 2mm；When absorbing material cross section is semicircle, its thickness is 2mm, radius 2.9mm.
- A kind of 9. structure for eliminating waveguide R type microwave switch spurious resonances according to claim 7, it is characterised in that：Class Trapezoidal absorbing material thickness is 2mm, and such trapezoidal absorbing material cross section includes isosceles trapezoid part and rectangle part, square Shape part is connected with the base of waveguide R type microwave switches, and a length of 3.8mm in upper bottom of isosceles trapezoid, go to the bottom long 5.8mm, and base angle is 45 degree, the long side of rectangle part is identical with the bottom length of isosceles trapezoid, width edge length 1mm.
- A kind of 10. structure for eliminating waveguide R type microwave switch spurious resonances according to claim 7, it is characterised in that：Class Circular absorbing material thickness is 6mm, and the absorbing material cross section of the similar round includes circular portion and rectangle part, rounded portions The radius divided is 2.5mm, and rectangle part is connected with the base of waveguide R type microwave switches, and the long side of rectangle part is 3mm, short While it is 0.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710960453.2A CN107819173A (en) | 2017-10-16 | 2017-10-16 | A kind of structure for eliminating waveguide R type microwave switch spurious resonances |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710960453.2A CN107819173A (en) | 2017-10-16 | 2017-10-16 | A kind of structure for eliminating waveguide R type microwave switch spurious resonances |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107819173A true CN107819173A (en) | 2018-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710960453.2A Pending CN107819173A (en) | 2017-10-16 | 2017-10-16 | A kind of structure for eliminating waveguide R type microwave switch spurious resonances |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110350279A (en) * | 2019-07-15 | 2019-10-18 | 电子科技大学 | A kind of chip integrated waveguide power distributor with filter function |
| CN111983574A (en) * | 2020-07-31 | 2020-11-24 | 中国航空工业集团公司济南特种结构研究所 | Method for improving RCS test quiet zone performance |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0555802A (en) * | 1991-08-28 | 1993-03-05 | Nec Corp | Waveguide switching circuit |
| AU677686B2 (en) * | 1993-09-08 | 1997-05-01 | Spinner Gmbh Elektrotechnische Fabrik | A coaxial antenna selector switch |
| US6448869B1 (en) * | 2001-03-21 | 2002-09-10 | The Boeing Company | E-plane offset transitions in a switchable waveguide |
| US20050190010A1 (en) * | 2004-02-27 | 2005-09-01 | Com Dev Ltd. | Microwave switch housing assembly |
-
2017
- 2017-10-16 CN CN201710960453.2A patent/CN107819173A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0555802A (en) * | 1991-08-28 | 1993-03-05 | Nec Corp | Waveguide switching circuit |
| AU677686B2 (en) * | 1993-09-08 | 1997-05-01 | Spinner Gmbh Elektrotechnische Fabrik | A coaxial antenna selector switch |
| US6448869B1 (en) * | 2001-03-21 | 2002-09-10 | The Boeing Company | E-plane offset transitions in a switchable waveguide |
| US20050190010A1 (en) * | 2004-02-27 | 2005-09-01 | Com Dev Ltd. | Microwave switch housing assembly |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110350279A (en) * | 2019-07-15 | 2019-10-18 | 电子科技大学 | A kind of chip integrated waveguide power distributor with filter function |
| CN111983574A (en) * | 2020-07-31 | 2020-11-24 | 中国航空工业集团公司济南特种结构研究所 | Method for improving RCS test quiet zone performance |
| CN111983574B (en) * | 2020-07-31 | 2024-04-09 | 中国航空工业集团公司济南特种结构研究所 | Method for improving performance of RCS test dead zone |
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Application publication date: 20180320 |