CN201210512Y - Directional coupler for wideband wave-guide - Google Patents
Directional coupler for wideband wave-guide Download PDFInfo
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- CN201210512Y CN201210512Y CNU2008200636267U CN200820063626U CN201210512Y CN 201210512 Y CN201210512 Y CN 201210512Y CN U2008200636267 U CNU2008200636267 U CN U2008200636267U CN 200820063626 U CN200820063626 U CN 200820063626U CN 201210512 Y CN201210512 Y CN 201210512Y
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- rectangular waveguides
- coupling aperture
- directional coupler
- pit
- rectangular
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Abstract
The utility model discloses a broad band waveguide directional coupler, comprising two rectangular waveguides, a metal baffle between the two rectangular waveguides, a coupling hole on the metal baffle and a tuning screw, wherein the lower side edge of the coupling hole coincides with a cavity bottom formed by two rectangular waveguides and the upper side edge coincides or dose not coincide with the cavity top formed by two rectangular waveguides, and depressions adjacent to the coupling hole are provided on the inner cavity bottom or top of the two rectangular waveguides, or both bottom and top, and the depressions are communicated with the two rectangular waveguides and the coupling hole and the tuning screw passes through the rectangular waveguide and into the depressions and the coupling hole. The broad band waveguide directional coupler has features of simple structure and wideband, and is mainly used in electronic system of each microwave band, especially the radar, antenna, high power microwave, broadband communication or the other military and civil field.
Description
Technical field
The utility model relates to a kind of directional coupler, specifically, relates to a kind of broadband waveguide directional coupler of being made up of waveguide.
Background technology
On the common wall of two adjacent parallel waveguides perforate can make signal from a waveguide-coupled to another waveguide, can make directional coupler thus.Because directional coupler also separates power by a certain percentage, so in general, directional coupler also can be used as power divider and uses.The guide directional coupler that generally adopts adopts the hole slot coupling usually both at home and abroad, opens one or more holes seam and make two microwave couplings in the adjacent waveguide on the common waveguide wall.By adjusting the directional coupler that hole seam size and position thereof can obtain the corresponding power distribution ratio.A major defect of this directional coupler is that its bandwidth of operation is too narrow.
The utility model content
The purpose of this utility model provides a kind of broadband waveguide directional coupler that can broadening self bandwidth.
To achieve these goals, the technical solution adopted in the utility model comprises following two kinds of situations:
Scheme one
A kind of broadband waveguide directional coupler, comprise two rectangular waveguides, metal partion (metp) between two rectangular waveguides, coupling aperture and tuning screw, it is characterized in that, described metal partion (metp) links to each other with the cavity inner wall that two rectangular waveguides are formed respectively, coupling aperture is arranged on the metal partion (metp), its lower edge overlaps with the cavity bottom that two rectangular waveguides are formed, and the upper edge does not overlap with the cavity top that two rectangular waveguides are formed, on the cavity bottom inwall that two rectangular waveguides are formed, be provided with a pit at least with the metal partion (metp) connecting place, pit all is communicated with two rectangular waveguides and coupling aperture, and tuning screw passes rectangular waveguide and enters in pit or the coupling aperture.
Described pit is positioned at the coupling aperture below.
The lateral wall of two rectangular waveguides at the coupling aperture place is absorbed in to inside.
Described coupling aperture be shaped as rectangle.
Described pit be shaped as rectangle.
On this directional coupler, be provided with the tuning screw that at least one inserts into the inner portion.
Scheme two
A kind of broadband waveguide directional coupler, comprise two rectangular waveguides, metal partion (metp) between two rectangular waveguides, coupling aperture and tuning screw, it is characterized in that, described metal partion (metp) links to each other with the cavity inner wall that two rectangular waveguides are formed respectively, coupling aperture is arranged on the metal partion (metp), its lower edge overlaps with the cavity bottom that two rectangular waveguides are formed, the upper edge also overlaps with the cavity top that two rectangular waveguides are formed, on inwall about the cavity that two rectangular waveguides are formed and with the metal partion (metp) connecting place, at least respectively be provided with a pit, pit all is communicated with two rectangular waveguides and coupling aperture, and tuning screw passes rectangular waveguide and enters in pit or the coupling aperture.
The described pit that is positioned at the cavity bottom that two rectangular waveguides form is positioned at the coupling aperture below, and the pit that is positioned at the cavity top that two rectangular waveguides form is positioned at the coupling aperture top.
The lateral wall of two rectangular waveguides at the coupling aperture place is absorbed in to inside.
Described coupling aperture be shaped as rectangle.
Described pit be shaped as rectangle.
On this directional coupler, be provided with the tuning screw that at least one inserts into the inner portion.
More than the main distinction of two kinds of schemes be that whether the upper edge of coupling aperture overlaps with the cavity top that two rectangular waveguides are formed, and thus initiation whether pit is set at this cavity top.In specific implementation process, tuning screw gos deep into the length of coupling aperture can be regulated arbitrarily, to revise mismachining tolerance.
For above-mentioned two kinds of schemes, all the enlarged areas of the coupling aperture area to metal partion (metp) promptly can be equivalent to metal partion (metp) is not set in the rectangular waveguide, and only on the inwall pit be set up and down at rectangular waveguide, thereby forms the third scheme.In addition, the coupling aperture in the utility model and the shape of pit all can change, but are the best with the rectangle.
Operation principle of the present utility model: as shown in Figure 8, electromagnetic wave signal enters by the port one of external lug from directional coupler, the regional underexcitation that will in rectangular waveguide, be positioned at coupling aperture rise the signal propagated along port 2 and by behind the coupling aperture along port 3 and 4 signals of propagating.These signals run into discontinuous structure when propagating in device, will experience the process of repeatedly transmitting and reflecting.If each form parameter value is suitable, these signals are cancelled out each other fully in the result of the output signal stack of the reflected signal of port one and port 4, and are power ratio output by certain designing requirement in the result of the output signal stack of port 2 and port 3.
Compared with prior art, the beneficial effects of the utility model are: near the coupler the coupling aperture on the metal partion (metp) up and down inwall is provided with pit, makes the utility model can satisfy designing requirement to certain coupling ratio and isolation in wideer frequency bandwidth; The utility model can also be as a kind of power divider.
The utility model is mainly used in the electronic system of each microwave band, particularly military affairs and civil areas such as radar, antenna, High-Power Microwave, broadband connections.
The utility model will be further described below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is the structural representation of the utility model-embodiment one.
Fig. 2 is the structural representation of the utility model-embodiment two.
Fig. 3 is the structural representation of the utility model-embodiment three.
Fig. 4 is that the A-A of Fig. 1 is to structural representation.
Fig. 5 is that the B-B of Fig. 1 is to structural representation.
Fig. 6 is that the A-A of Fig. 2 is to structural representation.
Fig. 7 is that the A-A of Fig. 3 is to structural representation.
Fig. 8 is a fundamental diagram of the present utility model.
The corresponding title of label in the accompanying drawing: 1-rectangular waveguide, 2-metal partion (metp), 3-coupling aperture, 4-tuning screw, 5-pit, 6-port one, 7-port 2,8-port 3,9-port 4.
Embodiment
Embodiment one
As Fig. 1, Fig. 4 and shown in Figure 5, a kind of broadband waveguide directional coupler, comprise two rectangular waveguides 1, metal partion (metp) 2 between two rectangular waveguides, coupling aperture 3 and tuning screw 4, wherein, the cavity that described metal partion (metp) 2 is formed two rectangular waveguides is divided into two parts, coupling aperture 3 is arranged on the metal partion (metp) 2, its lower edge overlaps with the cavity bottom that two rectangular waveguides are formed, and there is the gap in the cavity top of upper edge and two rectangular waveguide compositions, under being positioned at coupling aperture 3 on the cavity lower curtate inwall that two rectangular waveguides are formed, be provided with a pit 5, pit 5 is communicated with two rectangular waveguides and coupling aperture 3, tuning screw 4 passes rectangular waveguide and enters in pit 5 and the coupling aperture 3, and the length that tuning screw 4 gos deep into coupling aperture 3 is 1mm.
Embodiment two
As Fig. 2 and Fig. 6, embodiment two is with the difference of embodiment one, the upper edge of coupling aperture 3 overlaps with the cavity top that two rectangular waveguides 1 are formed, and directly over coupling aperture 3, be provided with cavity that 5, two rectangular waveguides of a pit form up and down the pit 5 of inwall all be communicated with coupling hole 3, about cavity on the inwall, be respectively equipped with a tuning screw 4, tuning screw 4 passes cavity that two rectangular waveguides form inwall up and down, enters pit 5 and coupling aperture 3, and other structures are identical with embodiment one.
Embodiment three
As Fig. 3 and shown in Figure 7, embodiment three is based on embodiment one or embodiment two, with the enlarged areas of coupling aperture 3 area to metal partion (metp) 2, be that coupling aperture 3 occupies metal partion (metp) 2 fully, thereby make no longer to have metal partion (metp) 2 in the whole proposal, just the top inner wall of rectangular waveguide 1 or bottom interior wall or up and down inwall pit 5 all is set.
The utility model compared with prior art can satisfy one in wider frequency bandwidth Decide the designing requirement of coupling ratio and isolation, have bigger design flexibility, usage range more Extensively.
Claims (8)
1. broadband waveguide directional coupler, comprise two rectangular waveguides (1), metal partion (metp) between two rectangular waveguides (2), coupling aperture (3) and tuning screw (4), it is characterized in that, described metal partion (metp) (2) links to each other with two rectangular waveguides (1) inwall respectively, coupling aperture (3) is arranged on the metal partion (metp) (2), its lower edge overlaps with the cavity bottom that two rectangular waveguides are formed, and the upper edge does not overlap with the cavity top that two rectangular waveguides are formed, on the cavity bottom inwall that two rectangular waveguides are formed, be provided with a pit (5) at least with metal partion (metp) (2) connecting place, pit (5) all is communicated with two rectangular waveguides (1) and coupling aperture (3), and tuning screw (4) passes rectangular waveguide and enters in pit (5) or the coupling aperture (3).
2. broadband waveguide directional coupler, comprise two rectangular waveguides (1), metal partion (metp) between two rectangular waveguides (2), coupling aperture (3) and tuning screw (4), it is characterized in that, described metal partion (metp) (2) links to each other with the cavity inner wall that two rectangular waveguides are formed respectively, coupling aperture (3) is arranged on the metal partion (metp) (2), its lower edge overlaps with the cavity bottom that two rectangular waveguides are formed, the upper edge also overlaps with the cavity top that two rectangular waveguides are formed, on inwall about the cavity that two rectangular waveguides are formed and with metal partion (metp) (2) connecting place, at least respectively be provided with a pit (5), pit (5) all is communicated with two rectangular waveguides (1) and coupling aperture (3), and tuning screw (4) passes rectangular waveguide and enters in pit (5) or the coupling aperture (3).
3. broadband waveguide directional coupler according to claim 1 is characterized in that, described pit (5) is positioned at coupling aperture (3) below.
4. broadband waveguide directional coupler according to claim 2, it is characterized in that, the cavity bottom pit (5) that described two rectangular waveguides are formed is positioned at coupling aperture (3) below, and the cavity top pit (5) of two rectangular waveguide compositions is positioned at coupling aperture (3) top.
5. broadband waveguide directional coupler according to claim 1 and 2 is characterized in that, the lateral wall that two rectangular waveguides are located at coupling aperture (3) is absorbed in to inside.
6. broadband waveguide directional coupler according to claim 1 and 2 is characterized in that, described coupling aperture (3) be shaped as rectangle.
7. broadband waveguide directional coupler according to claim 6 is characterized in that, described pit (5) be shaped as rectangle.
8. broadband waveguide directional coupler according to claim 1 and 2 is characterized in that, on this directional coupler, is provided with at least one tuning screw that inserts into the inner portion (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200636267U CN201210512Y (en) | 2008-06-03 | 2008-06-03 | Directional coupler for wideband wave-guide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200636267U CN201210512Y (en) | 2008-06-03 | 2008-06-03 | Directional coupler for wideband wave-guide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201210512Y true CN201210512Y (en) | 2009-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200636267U Expired - Fee Related CN201210512Y (en) | 2008-06-03 | 2008-06-03 | Directional coupler for wideband wave-guide |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101707274A (en) * | 2009-11-26 | 2010-05-12 | 广东通宇通讯设备有限公司 | Microwave combiner |
| US9178258B1 (en) | 2013-04-19 | 2015-11-03 | Google Inc. | Split-block construction of waveguide channels for radar frontend |
| CN106374172A (en) * | 2016-10-28 | 2017-02-01 | 安徽四创电子股份有限公司 | Waveguide couplers-based millimeter wave multiplexer |
| CN112235930A (en) * | 2020-10-10 | 2021-01-15 | 哈尔滨工业大学 | Measuring device for interaction of glow discharge plasma and microwave waveguide |
| US10957965B2 (en) | 2016-12-12 | 2021-03-23 | European Space Agency (Esa) | Directional coupler and a method of manufacturing thereof |
-
2008
- 2008-06-03 CN CNU2008200636267U patent/CN201210512Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101707274A (en) * | 2009-11-26 | 2010-05-12 | 广东通宇通讯设备有限公司 | Microwave combiner |
| CN101707274B (en) * | 2009-11-26 | 2014-07-16 | 广东通宇通讯股份有限公司 | Microwave combiner |
| US9178258B1 (en) | 2013-04-19 | 2015-11-03 | Google Inc. | Split-block construction of waveguide channels for radar frontend |
| CN106374172A (en) * | 2016-10-28 | 2017-02-01 | 安徽四创电子股份有限公司 | Waveguide couplers-based millimeter wave multiplexer |
| CN106374172B (en) * | 2016-10-28 | 2020-02-18 | 安徽四创电子股份有限公司 | Millimeter wave band multiplexer based on waveguide coupler |
| US10957965B2 (en) | 2016-12-12 | 2021-03-23 | European Space Agency (Esa) | Directional coupler and a method of manufacturing thereof |
| CN112235930A (en) * | 2020-10-10 | 2021-01-15 | 哈尔滨工业大学 | Measuring device for interaction of glow discharge plasma and microwave waveguide |
| CN112235930B (en) * | 2020-10-10 | 2022-09-23 | 哈尔滨工业大学 | Measuring device for interaction of glow discharge plasma and microwave waveguide |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090318 Termination date: 20140603 |