CN108110386B - Bidirectional output waveguide duplexer - Google Patents
Bidirectional output waveguide duplexer Download PDFInfo
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- CN108110386B CN108110386B CN201710890632.3A CN201710890632A CN108110386B CN 108110386 B CN108110386 B CN 108110386B CN 201710890632 A CN201710890632 A CN 201710890632A CN 108110386 B CN108110386 B CN 108110386B
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- output interface
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- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 14
- 230000009466 transformation Effects 0.000 claims abstract description 32
- 238000010276 construction Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 3
- 238000012827 research and development Methods 0.000 abstract description 3
- 238000004904 shortening Methods 0.000 abstract description 2
- 230000001131 transforming effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000012356 Product development Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
Abstract
The invention relates to a bidirectional output waveguide duplexer, which comprises a waveguide duplexer main body and an impedance transformation unit. One end of the first side face of the first box body is provided with a first waveguide input interface communicated with the first box body cavity, the other end of the first side face is provided with a second waveguide input interface communicated with the first box body cavity, the middle of the first side face is provided with a first waveguide output interface communicated with the first box body cavity, and the middle of the second side face is provided with a second waveguide output interface communicated with the first box body cavity. The impedance transformation unit is detachably arranged on the first side surface or the second side surface. The bidirectional output waveguide duplexer can correspondingly install the impedance transformation unit to the first waveguide output interface or the second waveguide output interface according to the requirement of the waveguide signal output direction, thereby greatly reducing the material model of the waveguide duplexer, shortening the research and development period of new products, being convenient for management and reducing the product cost.
Description
Technical Field
The present invention relates to a waveguide duplexer, and more particularly, to a bidirectional output waveguide duplexer.
Background
The waveguide duplexer is a core component for isolating the transmitting signal and the receiving signal of the microwave transceiver. The microwave transceivers need to be adapted to different client product forms and different antenna feed systems, so that the microwave transceivers of the same model need to use waveguide duplexers of different models. The main differences between the different types of waveguide duplexers are: the waveguide direction of the common end of one waveguide duplexer is the same as that of the receiving and transmitting port, and the waveguide direction of the common end of the other waveguide duplexer is opposite to that of the receiving and transmitting port. Therefore, the waveguide duplexer has multiple models and is inconvenient to control and manage. When the waveguide direction of the common end of the waveguide duplexer needs to be changed, a new waveguide duplexer needs to be developed, so that the product development cycle is prolonged, and the management cost is increased.
Disclosure of Invention
Accordingly, there is a need to overcome the drawbacks of the prior art and to provide a bidirectional output waveguide duplexer that is easy to manage and has a reduced product cost.
The technical scheme is as follows: a bidirectional output waveguide duplexer comprising: the waveguide duplexer comprises a waveguide duplexer main body, wherein the waveguide duplexer main body comprises a first box body, a first band-pass filter and a second band-pass filter, the first band-pass filter and the second band-pass filter are arranged in the first box body, one end of a first side surface of the first box body is provided with a first waveguide input interface communicated with a cavity of the first box body, the other end of the first side surface of the first box body is provided with a second waveguide input interface communicated with the cavity of the first box body, the middle part of the first side surface of the first box body is provided with a first waveguide output interface communicated with the cavity of the first box body, and the middle part of a second side surface, opposite to the first side surface, of the first box body is provided with a second waveguide output interface communicated with the cavity of the first box body; the impedance conversion unit is detachably arranged on the first side surface or the second side surface;
When the impedance transformation unit is arranged at the first waveguide output interface on the first side face, the impedance transformation unit can enable the first waveguide output interface to be equivalent to a short circuit face; when the impedance transformation unit is installed at the second waveguide output interface on the second side surface, the impedance transformation unit can equate the second waveguide output interface to a short-circuit surface.
In the bidirectional output waveguide duplexer, if the impedance transformation unit is installed at the first waveguide output interface on the first side surface, the impedance transformation unit can make the first waveguide output interface equivalent to a short-circuit surface, and the waveguide signals input by the first waveguide input interface and the second waveguide input interface are output from the second waveguide output interface in the first direction; if the impedance transformation unit is installed at the second waveguide output interface on the second side surface, the impedance transformation unit can make the second waveguide output interface equivalent to a short-circuit surface, and the waveguide signals input by the first waveguide input interface and the second waveguide input interface are output from the first waveguide output interface in the second direction, wherein the first direction is opposite to the second direction. Therefore, the impedance transformation unit can be correspondingly arranged at the first waveguide output interface or the second waveguide output interface according to the requirement of the waveguide signal output direction, so that the material model of the waveguide duplexer is greatly reduced, the research and development period of a new product is shortened, the management is convenient, and the product cost is reduced.
In one embodiment, the impedance transformation unit comprises a second box body and a mounting plate, wherein one end face of the second box body is provided with an opening, the second box body is connected with the mounting plate, and the mounting plate is used for being detachably attached to the first side face or the second side face; when the mounting plate is detachably attached to the first side surface, the opening is communicated with the first waveguide output interface; when the mounting plate is detachably attached to the second side face, the opening is communicated with the second waveguide output interface.
In one embodiment, the mounting plate is an annular plate circumferentially arranged around the side wall of the second box body, and the mounting surface of the mounting plate and the end surface of the second box body provided with the opening are positioned on the same plane.
In one embodiment, the second box body and the mounting plate are of an integrated structure.
In one embodiment, the size of the opening is set corresponding to the size of the first waveguide output interface and the size of the second waveguide output interface.
In one embodiment, the mounting plate is provided with a first mounting hole, a first side surface of the first box body is provided with a second mounting hole corresponding to the first mounting hole, and a second side surface of the first box body is provided with a third mounting hole corresponding to the first mounting hole; the mounting plate passes through the first mounting hole and the second mounting hole through a first mounting piece and is detachably mounted on a first side face of the first box body; or the mounting plate passes through the first mounting hole and the third mounting hole through a second mounting piece and is detachably arranged on the second side surface of the first box body.
In one embodiment, the mounting plate is provided with a buckle, a first side surface of the first box body is provided with a first clamping hole corresponding to the buckle, and a second side surface of the first box body is provided with a second clamping hole corresponding to the buckle.
In one embodiment, the distance L between the opening on one end face of the second box body and the other end face of the second box body is lambda g/2, wherein lambda is the wavelength of the waveguide signal.
In one embodiment, the first band-pass filters are multiple, and the first band-pass filters are sequentially arranged in the first box body at intervals; the second band-pass filter is a plurality of, the second band-pass filter sets up at intervals in proper order in the first box body.
in one embodiment, the first bandpass filter is disposed between the first waveguide input interface and the first waveguide output interface; the second bandpass filter is disposed between the second waveguide input interface and the second waveguide output interface.
Drawings
Fig. 1 is a schematic structural diagram of a bidirectional output waveguide duplexer according to an embodiment of the present invention;
Fig. 2 is a schematic structural diagram illustrating an impedance transformation unit disposed on a first side of a bidirectional output waveguide duplexer according to an embodiment of the present invention;
Fig. 3 is a schematic structural diagram illustrating an impedance transformation unit of a bidirectional output waveguide duplexer according to an embodiment of the present invention, where the impedance transformation unit is disposed on a second side.
10. The waveguide duplexer comprises a waveguide duplexer body, 11, a first box body, 111, a first side face, 112, a second side face, 113, a first waveguide input interface, 114, a second waveguide input interface, 115, a first waveguide output interface, 116, a second waveguide output interface, 12, a first band-pass filter, 13, a second band-pass filter, 20, an impedance transformation unit, 21, a second box body, 211, an opening, 22 and a mounting plate.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "first", "second" and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the description of the present invention, it should be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly connected" to another element, there are no intervening elements present.
referring to fig. 1, in one embodiment, a bidirectional output waveguide duplexer includes a waveguide duplexer body 10 and an impedance transforming unit 20. The waveguide duplexer body 10 includes a first case 11, a first band pass filter 12, and a second band pass filter 13. The first band-pass filter 12 and the second band-pass filter 13 are both arranged inside the first box body 11. One end of the first side surface 111 of the first box body 11 is provided with a first waveguide input interface 113 communicated with the cavity of the first box body 11, the other end of the first side surface 111 of the first box body 11 is provided with a second waveguide input interface 114 communicated with the cavity of the first box body 11, the middle part of the first side surface 111 of the first box body 11 is provided with a first waveguide output interface 115 communicated with the cavity of the first box body 11, and the middle part of the second side surface 112, which is opposite to the first side surface 111, of the first box body 11 is provided with a second waveguide output interface 116 communicated with the cavity of the first box body 11. The impedance transformation unit 20 is detachably mounted on the first side surface 111 or the second side surface 112.
Wherein, when the impedance transformation unit 20 is installed at the first waveguide output interface 115 on the first side 111, the impedance transformation unit 20 can equate the first waveguide output interface 115 as a short-circuit surface; when the impedance transformation unit 20 is mounted at the second waveguide output interface 116 on the second side surface 112, the impedance transformation unit 20 can equate the second waveguide output interface 116 as a short-circuited surface.
In the bidirectional output waveguide duplexer, if the impedance transforming unit 20 is installed at the first waveguide output interface 115 on the first side 111, the impedance transforming unit 20 can make the first waveguide output interface 115 equivalent to a short-circuit surface, and the waveguide signals input from the first waveguide input interface 113 and the second waveguide input interface 114 are output from the second waveguide output interface 116 in the first direction (as shown in fig. 2); if the impedance transforming unit 20 is installed at the second waveguide output interface 116 on the second side surface 112, the impedance transforming unit 20 can make the second waveguide output interface 116 equivalent to a short-circuit surface, and the waveguide signals inputted from the first waveguide input interface 113 and the second waveguide input interface 114 are outputted from the first waveguide output interface 115 in a second direction (as shown in fig. 3), where the first direction is opposite to the second direction. Therefore, the impedance transformation unit 20 can be correspondingly installed at the first waveguide output interface 115 or the second waveguide output interface 116 according to the requirement of the waveguide signal output direction, thereby greatly reducing the material model of the waveguide duplexer, shortening the research and development period of new products, facilitating management and reducing the product cost.
In one embodiment, the impedance transformation unit 20 includes a second case 21 and a mounting plate 22. One end face of the second box body 21 is provided with an opening 211, and the second box body 21 is connected with the mounting plate 22. The mounting plate 22 is detachably attached to the first side surface 111 or the second side surface 112. When the mounting board 22 is detachably attached to the first side surface 111, the opening 211 is communicated with the first waveguide output interface 115; when the mounting board 22 is detachably attached to the second side surface 112, the opening 211 communicates with the second waveguide output interface 116. Thus, the waveguide signals input from the first waveguide input interface 113 and the second waveguide input interface 114 enter the second box 21 from the opening 211 of the second box 21 through the first waveguide output interface 115 or the second waveguide output interface 116, and are reflected into the first box 11 from the bottom wall of the second box 21, so that the first waveguide output interface 115 or the second waveguide output interface 116 can be equivalently used as a short-circuit surface.
Further, the mounting plate 22 is an annular plate arranged around the circumferential direction of the side wall of the second box body 21, and the mounting surface of the mounting plate 22 and the end surface of the second box body 21 provided with the opening 211 are located on the same plane. Thus, the mounting surface of the mounting plate 22 is attached to the first side surface 111 and the second side surface 112, and is encapsulated in the peripheral area of the first waveguide output interface 115 or the second waveguide output interface 116, so that the waveguide signal can be prevented from leaking out of the first box body 11 and the second box body 21. Specifically, the second box 21 and the mounting plate 22 are of an integrated structure.
Further, the size of the opening 211 corresponds to the size of the first waveguide output interface 115 and the size of the second waveguide output interface 116. Therefore, the first waveguide output interface 115 or the second waveguide output interface 116 can be perfectly and completely butted with the opening 211, so that the waveguide signals can be conveniently transmitted, and the waveguide signals can be prevented from being omitted.
In one embodiment, the mounting plate 22 is provided with a first mounting hole. The first side 111 of the first box 11 is provided with a second mounting hole corresponding to the first mounting hole. The second side surface 112 of the first box body 11 is provided with a third mounting hole corresponding to the first mounting hole. The mounting plate 22 passes through the first mounting hole through the first mounting member and the second mounting hole is detachably mounted on the first side 111 of the first box 11. Alternatively, the mounting plate 22 is detachably mounted on the second side surface 112 of the first box 11 by a second mounting member passing through the first mounting hole and the third mounting hole. Specifically, the first mounting hole, the second mounting hole and the third mounting hole are threaded holes, and the first mounting piece and the second mounting piece are screws, bolts or screws correspondingly arranged with the threaded holes.
In another embodiment, the mounting plate 22 is provided with a buckle, the first side 111 of the first box 11 is provided with a first buckling hole corresponding to the buckle, and the second side 112 of the first box 11 is provided with a second buckling hole corresponding to the buckle. Thus, the mounting plate 22 can be detachably clamped to the first side surface 111 or the second side surface 112 of the first box body 11, and the mounting efficiency is high.
Generally, the equivalent input impedance Z of the impedance transformation unit 20inA distance L between the opening 211 of one end face of the second box body 21 and the other end face of the second box body 21, and a waveguide load impedance ZLcharacteristic impedance Z of waveguide1Should be full then the formula:
wherein R isL＝ZL，R1＝Z1And β is a phase constant of the electromagnetic wave.
In the present embodiment, referring to fig. 1 again, a distance L between the opening 211 of one end surface of the second box body 21 and the other end surface of the second box body 21 is λ g/2, where λ is a wavelength of the waveguide signal. Thus, the waveguide signals input from the first waveguide input interface 113 and the second waveguide input interface 114 enter the second box 21 through the first waveguide output interface 115, the second waveguide output interface 116, and the opening 211, and are reflected to the first box 11 from the bottom wall of the second box 21. Because the distance L between the opening 211 of one end surface of the second box body 21 and the other end surface of the second box body 21 is lambdag/2, and the lambdag/2 is approximately equal to pi/beta, at RL＝ZLWhen 0, Z can be madeinTherefore, when the impedance transformation unit 20 is installed at the first waveguide output interface 115 or the second waveguide output interface 116, the first waveguide output interface 115 or the second waveguide output interface 116 can be equivalent to a short-circuit surface.
In this embodiment, the number of the first band pass filters 12 is multiple, and the first band pass filters 12 are sequentially disposed in the first box 11 at intervals. The second band pass filter 13 is a plurality of, the second band pass filter 13 sets up in proper order at interval in the first box body 11. In particular, the first band-pass filter 12 is arranged between the first waveguide input interface 113 and the first waveguide output interface 115. The second band-pass filter 13 is arranged between the second waveguide input interface 114 and the second waveguide output interface 116.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A bidirectional output waveguide duplexer is characterized by comprising
A waveguide duplexer body including a first box, a first band pass filter and a second band pass filter, the first band-pass filter and the second band-pass filter are both arranged in the first box body, one end of the first side surface of the first box body is provided with a first waveguide input interface communicated with the cavity of the first box body, the other end of the first side surface of the first box body is provided with a second waveguide input interface communicated with the cavity of the first box body, the middle part of the first side surface of the first box body is provided with a first waveguide output interface communicated with the cavity of the first box body, a second waveguide output interface communicated with the first box body cavity is arranged in the middle of a second side surface, opposite to the first side surface, of the first box body, the first bandpass filter is disposed between the first waveguide input interface and the first waveguide output interface; the second bandpass filter is disposed between the second waveguide input interface and the second waveguide output interface; and
An impedance transformation unit for being detachably mounted on the first side surface or the second side surface;
When the impedance transformation unit is arranged at the first waveguide output interface on the first side face, the impedance transformation unit can enable the first waveguide output interface to be equivalent to a short circuit face; when the impedance transformation unit is installed at the second waveguide output interface on the second side surface, the impedance transformation unit can equate the second waveguide output interface to a short-circuit surface.
2. The duplexer of claim 1, wherein the impedance transformation unit comprises a second box body and a mounting plate, wherein one end surface of the second box body is provided with an opening, the second box body is connected with the mounting plate, and the mounting plate is detachably attached to the first side surface or the second side surface; when the mounting plate is detachably attached to the first side surface, the opening is communicated with the first waveguide output interface; when the mounting plate is detachably attached to the second side face, the opening is communicated with the second waveguide output interface.
3. the duplexer of claim 2, wherein the mounting plate is an annular plate disposed circumferentially around the side wall of the second case, and the mounting surface of the mounting plate is on the same plane as the end surface of the second case having the opening.
4. The diplexer of claim 2, wherein the second box is of unitary construction with the mounting plate.
5. The duplexer of claim 2, wherein the size of the opening is set in correspondence with the size of the first waveguide output interface and the size of the second waveguide output interface.
6. The duplexer as claimed in claim 2, wherein the mounting plate has a first mounting hole, the first side of the first box has a second mounting hole corresponding to the first mounting hole, and the second side of the first box has a third mounting hole corresponding to the first mounting hole; the mounting plate passes through the first mounting hole and the second mounting hole through a first mounting piece and is detachably mounted on a first side face of the first box body; or the mounting plate passes through the first mounting hole and the third mounting hole through a second mounting piece and is detachably arranged on the second side surface of the first box body.
7. the duplexer of claim 2, wherein the mounting plate is provided with a buckle, a first side surface on the first box body is provided with a first clamping hole corresponding to the buckle, and a second side surface on the first box body is provided with a second clamping hole corresponding to the buckle.
8. The duplexer of claim 2, wherein a distance L between the opening of one end surface of the second box and the other end surface of the second box is λ g/2, where λ is a wavelength of the waveguide signal.
9. The duplexer of any one of claims 1 to 8, wherein the first bandpass filter is provided in plurality, and the first bandpass filters are sequentially disposed in the first box at intervals.
10. The duplexer as claimed in any one of claims 1 to 8, wherein the second band-pass filters are provided in plurality, and the second band-pass filters are sequentially disposed at intervals in the first case.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710890632.3A CN108110386B (en) | 2017-09-27 | 2017-09-27 | Bidirectional output waveguide duplexer |
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| CN201710890632.3A CN108110386B (en) | 2017-09-27 | 2017-09-27 | Bidirectional output waveguide duplexer |
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| CN108110386A CN108110386A (en) | 2018-06-01 |
| CN108110386B true CN108110386B (en) | 2019-12-13 |
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| CN110137640A (en) * | 2019-06-12 | 2019-08-16 | 南京邮电大学 | T shape knot waveguide duplexer |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5392008A (en) * | 1993-04-22 | 1995-02-21 | Hughes Aircraft Company | Orthomode transducer with side-port window |
| EP0687027A2 (en) * | 1994-06-08 | 1995-12-13 | CSELT Centro Studi e Laboratori Telecomunicazioni S.p.A. | Dual mode cavity for waveguide bandpass filters |
| CN1294421A (en) * | 1999-11-02 | 2001-05-09 | 株式会社村田制作所 | Medium electric filter, compound medium electric filter, one-two-way duplexer and communication device |
| CN105591180A (en) * | 2016-01-29 | 2016-05-18 | 北京理工大学 | Millimeter-wave terahertz-wave waveguide diplexer |
| CN106654486A (en) * | 2016-12-29 | 2017-05-10 | 中国科学院国家空间科学中心 | Waveguide circuit breaker for terahertz mixer |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2553716C (en) * | 2005-01-11 | 2010-06-22 | Research In Motion Limited | Dual receive filter |
| JP2014022864A (en) * | 2012-07-17 | 2014-02-03 | Nippon Dempa Kogyo Co Ltd | Waveguide filter, and duplexer |
| CN105098297A (en) * | 2014-05-21 | 2015-11-25 | 南京天璇电子技术有限公司 | Compact structure T-type orthogonal mode converter and waveguide duplexer composed of compact structure T-type orthogonal mode converter |
-
2017
- 2017-09-27 CN CN201710890632.3A patent/CN108110386B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5392008A (en) * | 1993-04-22 | 1995-02-21 | Hughes Aircraft Company | Orthomode transducer with side-port window |
| EP0687027A2 (en) * | 1994-06-08 | 1995-12-13 | CSELT Centro Studi e Laboratori Telecomunicazioni S.p.A. | Dual mode cavity for waveguide bandpass filters |
| CN1294421A (en) * | 1999-11-02 | 2001-05-09 | 株式会社村田制作所 | Medium electric filter, compound medium electric filter, one-two-way duplexer and communication device |
| CN105591180A (en) * | 2016-01-29 | 2016-05-18 | 北京理工大学 | Millimeter-wave terahertz-wave waveguide diplexer |
| CN106654486A (en) * | 2016-12-29 | 2017-05-10 | 中国科学院国家空间科学中心 | Waveguide circuit breaker for terahertz mixer |
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Denomination of invention: Bidirectional output waveguide duplexer Effective date of registration: 20211111 Granted publication date: 20191213 Pledgee: Dongguan Bank Co.,Ltd. Guangdong pilot Free Trade Zone Nansha branch Pledgor: WAVELAB Inc. Registration number: Y2021440000341 |
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Granted publication date: 20191213 Pledgee: Dongguan Bank Co.,Ltd. Guangdong pilot Free Trade Zone Nansha branch Pledgor: WAVELAB Inc. Registration number: Y2021440000341 |