CN100373688C - Adjustable single hole coaxial output directional coupler - Google Patents
Adjustable single hole coaxial output directional coupler Download PDFInfo
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- CN100373688C CN100373688C CNB2005100222262A CN200510022226A CN100373688C CN 100373688 C CN100373688 C CN 100373688C CN B2005100222262 A CNB2005100222262 A CN B2005100222262A CN 200510022226 A CN200510022226 A CN 200510022226A CN 100373688 C CN100373688 C CN 100373688C
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- transmission line
- sidewall
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- cone
- cover board
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Abstract
The present invention relates to an adjustable single-hole coaxial output directional coupling device, which belongs to the technical field of microwaves and particularly relates to a microwave directional coupling technology. The dead joint formed of a cover plate of a resonant cavity of a microwave subsidiary transmission line and a side wall is changed into the sliding fit with a proper fit clearance, so that the cover plate can slide upwards and downwards along the side wall and can rotate around the circle center of the cover plate. Because a stripline of the subsidiary transmission line and a coaxial transmission line are both fixed with the cover plate, the cover plate which slides upwards and downwards can change the distance between a conductor strap of the stripline and a coupling hole, and the rotation of the cover plate can adjust an included angle between a longitudinal centerline of the conductor strap and an axial line of a main transmission line, so that the aim of adjusting the coupling degree and the directivity of the directional coupling device is achieved. The cover plate can be taken out from the top end of the resonant cavity to enlarge the coupling hole so as to enhance the coupling degree of the directional coupling device further when necessary. The present invention realizes the adjustment of the coupling degree and the directivity of the single-hole coaxial output directional coupling device, simplifies the use of the single-hole coaxial output directional coupling device, and reduces the difficulty of designing the single-hole coaxial output directional coupling device to a certain extent.
Description
Technical field
Adjustable single hole coaxial output directional coupler belongs to microwave technical field, particularly microwave directional couple technology.
Background technology
Directional coupler is one of the most frequently used element of microwave technical field, and its effect is microwave to be coupled out a certain proportion of microwave energy enter the secondary transmission line of microwave and propagate along a direction in the secondary transmission line of microwave from the microwave main transmission line.
The microwave main transmission line of single hole coaxial output directional coupler is waveguide or coaxial transmission line, or other microwave transmission line, and the secondary transmission line of microwave is a strip line and with the output of coaxial transmission line form, as shown in Figure 1.This directional coupler is owing to the coaxial output of employing, and a lot of microwave measuring instrument generally all has coaxial interface, thereby makes it very convenient with being connected of measuring instrument; Simultaneously, the secondary transmission line structure compactness of its microwave, size is less, and requirement on machining accuracy is lower, and therefore, single hole coaxial output directional coupler has obtained using widely in the microwave engineering technology.
The single hole coaxial output directional coupler cross sectional representation as shown in Figure 1, it is made of the secondary transmission line of microwave main transmission line 1 and microwave.The secondary transmission line of microwave comprises the cylindrical cavity of being made up of sidewall 3 and metal cover board 5, metal base plate 92, is in the conductor belt 11 in the resonant cavity and the coaxial transmission line that is made of inner wire 6 and outer conductor 4 etc.The metal cover board 5 of cylindrical cavity 2 and metal base plate 9 form strip line with conductor belt 11, and metal base plate 9 is again the common wall between the major and minor transmission line of microwave, and be fixing by insulator 7 between the inner wire 6 of coaxial transmission line and the outer conductor 4.Carry out microwave energy coupling by the coupling aperture on their common walls 9 10 between the major and minor transmission line of microwave, make microwave energy in the microwave main transmission line have sub-fraction to be coupled in the secondary transmission line of microwave and and export through coaxial transmission line.The microwave energy that is coupled in the secondary transmission line of microwave can be propagated along former and later two directions of strip line in the secondary transmission line of microwave, the designing requirement microwave energy of directional coupler is as far as possible only propagated in one direction and is exported, and wishes that output is the smaller the better on another rightabout.The ratio of microwave output power is called the directivity of directional coupler on the both direction, and obviously, the directivity of directional coupler should be big as far as possible.And the microwave power of exporting on the main outbound course and the ratio of microwave main transmission line incident power are called the degree of coupling of directional coupler, it has reflected the strong and weak degree that is coupled between the major and minor transmission line of microwave, and the size of the degree of coupling is in advance given when the design directional coupler.
The resonant cavity sidewall 3 and the cover plate 5 of existing single hole coaxial output directional coupler directly link together, and that is to say, are fixed together between them, without any the gap, to prevent microwave leakage; And the conductor belt 11 of strip line welds mutually with the inner wire 6 of coaxial transmission line, inner wire 6 is fixing with the outer conductor 4 that is fixed on the cover plate 5 by insulator 7 again, thereby the secondary transmission line of whole microwave becomes as a whole, and the relative position between them is all fixing.Given regularly in the major and minor type of transmission line of microwave, size, the degree of coupling of single hole coaxial output directional coupler just depends primarily on the size of coupling aperture 10 and the distance size between conductor belt 11 and the coupling aperture 10; Its directivity then mainly determines by the size of the relative angle Φ between the axis 13 of the longitudinal centre line 12 of conductor belt 11 and microwave main transmission line 1, as shown in Figure 2.Therefore, when the resonant cavity cover plate 5 of the secondary transmission line of microwave with after sidewall 3 is fixedlyed connected, single hole coaxial output directional coupler just no longer has the regulating power of virtually any size, relative position and direction, that is to say, its degree of coupling and directivity can not be adjusted, and obviously this has brought very big inconvenience for the use of directed coupler.Again because the Design Theory more complicated of single hole coaxial output directional coupler, attempt is unpractical by the disposable very accurate relative position of determining the major and minor transmission line of microwave of Theoretical Calculation, have only by regulating just to make its performance reach desirable requirement, so the adjustability of relative distance and relative direction just seems particularly necessary between the major and minor transmission line of microwave.
Summary of the invention
Main purpose of the present invention provides a kind of convenient that use, degree of coupling and the adjustable single hole coaxial output directional coupler of directivity.
As shown in Figure 1, the degree of coupling of single hole coaxial output directional coupler is after the major and minor type of transmission line of microwave, size are given, and is just relevant with the size of coupling aperture 10, also and the conductor belt 11 of the secondary transmission line of microwave and the distance dependent between the coupling aperture 10; Its directivity then depends primarily on the size of the angle Φ between the axis 13 of the longitudinal centre line 12 of conductor belt 11 of the secondary transmission line of microwave and microwave main transmission line 1, as shown in Figure 2.In general, the conductor belt 11 of the secondary transmission line of microwave is near more from the distance of coupling aperture 10, and the degree of coupling of single hole coaxial output directional coupler is just big more; And have an optimum angle, the directivity maximum of single hole coaxial output directional coupler under this angle between the axis 13 of the longitudinal centre line 12 of the conductor belt 11 of the secondary transmission line of microwave and microwave main transmission line 1.Because the conductor belt 11 of the secondary transmission line of microwave links to each other with the inner wire 6 of coaxial transmission line, it is fixed together into as a whole with the metal cover board 5 of coaxial transmission line and cylindrical cavity 2, therefore, need only metal cover board 5 by be slidingly matched instead with fixedlying connected of resonant cavity sidewall 3, promptly reasonably keeping suitable fit clearance in the margin of tolerance, make metal cover board 5 can slide up and down and center on its center of circle along the inwall of sidewall 3 and rotate, just can realize adjusting the single hole coaxial output directional coupler degree of coupling and directivity.
Based on above thinking, technical scheme of the present invention is:
Adjustable single hole coaxial output directional coupler is made of microwave main transmission line 1 and the secondary transmission line of microwave; The secondary transmission line of microwave comprises the cylindrical cavity of being made up of sidewall 3 and metal cover board 5, metal base plate 92, is in the conductor belt 11 in the resonant cavity and the coaxial transmission line that is made of inner wire 6 and outer conductor 4 etc.; The metal cover board 5 of cylindrical cavity 2 and metal base plate 9 form strip line with conductor belt 11; Metal base plate 9 is again the common wall between the major and minor transmission line of microwave, and is fixing by insulator 7 between the inner wire 6 of coaxial transmission line, the outer conductor 4, carries out the microwave energy coupling by the coupling aperture on their common walls 9 10 between the major and minor transmission line of microwave; The conductor belt 11 of the secondary transmission line of microwave links to each other with the inner wire 6 of coaxial transmission line, and it is fixed together into as a whole with the metal cover board 5 of coaxial transmission line and cylindrical cavity 2; It is characterized in that, has suitable fit clearance 8 (as shown in Figure 1) between the metal cover board 5 of cylindrical cavity 2 and the sidewall 3, make metal cover board 5 can slide up and down and center on its center of circle along the inwall of sidewall 3 and rotate, and then realize that the single hole coaxial output directional coupler degree of coupling and directivity are adjustable; After finishing the adjusting of the degree of coupling and directivity, between the metal cover board 5 of cylindrical cavity 2 and the sidewall 3 can by can eliminate fit clearance 8 and realize metal cover board 5 and sidewall 3 between any fastener that electrically contacts fixed.
After being adjusted to the degree of coupling and directivity and meeting the demands, with fastener the positional lock of cover plate 5 is fastened eliminating fit clearance 8 again, thereby avoid micro-wave coupler that microwave leakage in use takes place; Unclamp fastener, just can regulate again, thereby realization is to the adjusting of the degree of coupling and the directivity of single hole coaxial output directional coupler the position of cover plate 5.
Where necessary, cover plate 5 can also be taken out from the top of resonant cavity 2, coupling aperture 10 be enlarged, to obtain the stronger degree of coupling.
The microwave main transmission line can be rectangular waveguide, circular waveguide, ridge waveguide, coaxial transmission line or other microwave transmission line.
Being locked of cover plate 5 be accomplished reliable, not because of move, transport, factors such as vibration, variations in temperature become flexible; Also requiring to make between cover plate 5 and the sidewall 3 has good electrical contact, and to accomplish not having microwave leakage as far as possible, any fastener that can satisfy these requirements can adopt.
The interface of output coaxial transmission line can adopt the modular connection of any model, is connected with other coaxial component or coaxial cable with convenient.
The invention has the beneficial effects as follows: be slidingly matched with fixedlying connected of resonant cavity sidewall by metal cover board with the single hole coaxial output directional coupler cylindrical cavity instead, reasonably keeping suitable fit clearance between the two in the margin of tolerance, make metal cover board can slide up and down and center on its center of circle along the inwall of sidewall and rotate, realized adjusting the single hole coaxial output directional coupler degree of coupling and directivity; Make things convenient for the use of single hole coaxial output directional coupler simultaneously, also reduced the design difficulty of single hole coaxial output directional coupler to a certain extent.
Description of drawings
Fig. 1 is an adjustable single hole coaxial output directional coupler structural representation of the present invention.
Wherein, 1 is the microwave main transmission line, and 2 is cylinder resonator, 3 is the resonant cavity sidewall, 4 is the coaxial transmission line outer conductor, and 5 is the resonant cavity metal cover board, and 6 is the coaxial transmission line inner wire, 7 is coaxial transmission line built-in electrical insulation, 8 is the fit clearance between resonant cavity cover plate 5 and the sidewall 3, and 9 is the resonant cavity base plate, i.e. the common wall of major and minor microwave transmission line, 10 is coupling aperture, and 11 is conductor belt.
Need to prove that as if the fit clearance 8 of omitting between resonant cavity cover plate 5 and the sidewall 3, promptly no gap is fixedly linked between resonant cavity cover plate 5 and the sidewall 3, then Fig. 1 also can be used as the structural representation of single hole coaxial output directional coupler in the prior art.
Fig. 2 is a single hole coaxial output directional coupler directivity principle schematic.
Wherein, 1 is the microwave main transmission line, and 2 is cylinder resonator, and 11 is conductor belt, and 12 is the conductor belt center line, and 13 is the axis of microwave main transmission line.
Fig. 3 is the structural representation of a kind of embodiment of adjustable single hole coaxial output directional coupler of the present invention.
Wherein, 1 is the microwave main transmission line, and 2 is cylinder resonator, and 3 is the resonant cavity sidewall, 5 is the resonant cavity metal cover board, 6 is the coaxial transmission line inner wire, and 9 is the resonant cavity base plate, i.e. the microwave master, the common wall of secondary transmission line, 10 is coupling aperture, 11 is conductor belt, and 14 is the outer wall scalene cone of cone 15, and 15 is the cone on sidewall 3 tops, 16 is the narrow slit of opening along the circumference of cone 15,17 is the groove that digs at cone 15 roots, and 18 is microwave main transmission line flange, and 19 is the transmission line modular connection, 20 are the taper briquetting, 21 are the inwall scalene cone of taper briquetting 20, and it and scalene cone 14 match, and 22 is clamp nut.
Embodiment
As shown in Figure 3,1 is the microwave main transmission line among the figure, 2 is cylinder resonator, 3 is the resonant cavity sidewall, 5 is the resonant cavity metal cover board, 6 are output coaxial transmission line inner wire, and 9 is the resonant cavity base plate, just the common wall between the secondary transmission line of microwave main transmission line and microwave, 10 for opening the coupling aperture on common wall 9,11 is conductor belt, and it and cover plate 5 and base plate 9 be common to constitute microwaves secondary transmission line, i.e. strip lines, 18 is microwave main transmission line flange, 19 is the modular connection of coaxial transmission line, the 20th, and the taper briquetting, 22 is clamp nut.
Claims (5)
1. adjustable single hole coaxial output directional coupler is made of microwave main transmission line (1) and the secondary transmission line of microwave; The secondary transmission line of microwave comprises the cylindrical cavity of being made up of sidewall (3) and metal cover board (5), metal base plate (9) (2), the coaxial transmission line that is in the conductor belt (11) in the resonant cavity and is made of inner wire (6) and outer conductor (4); The metal cover board (5) of cylindrical cavity (2) and metal base plate (9) form strip line with conductor belt (11); Metal base plate (9) is again the common wall between the major and minor transmission line of microwave, fixing between the inner wire of coaxial transmission line (6), the outer conductor (4) by insulator (7), carry out the microwave energy coupling by the coupling aperture (10) on their common walls (9) between the major and minor transmission line of microwave; The conductor belt (11) of the secondary transmission line of microwave links to each other with the inner wire (6) of coaxial transmission line, and it is fixed together into as a whole with the metal cover board (5) of coaxial transmission line and cylindrical cavity (2); It is characterized in that, has suitable fit clearance (8) between the metal cover board (5) of cylindrical cavity (2) and the sidewall (3), make metal cover board (5) can slide up and down and center on its center of circle along the inwall of sidewall (3) and rotate, and then realize that the single hole coaxial output directional coupler degree of coupling and directivity are adjustable; After finishing the adjusting of the degree of coupling and directivity, between the metal cover board (5) of cylindrical cavity (2) and the sidewall (3) can by can eliminate fit clearance (8) and realize metal cover board (5) and sidewall (3) between any fastener that electrically contacts fixed.
2. adjustable single hole coaxial output directional coupler according to claim 1, it is characterized in that, described coaxial transmission line has interface (19), and described interface (19) can adopt the modular connection of any model, is connected with other coaxial component or coaxial cable with convenient.
3. adjustable single hole coaxial output directional coupler according to claim 1, it is characterized in that, conductor belt (11) and coaxial transmission line inner wire (6) welding, inner wire (6) is fixed by the insulator of coaxial transmission line modular connection (19) inside and the outer conductor of joint again, whole modular connection (19) is fixed on the cover plate (5), thereby makes conductor belt, output coaxial transmission line and metal cover board become as a whole.
4. adjustable single hole coaxial output directional coupler according to claim 1 is characterized in that, described fastener comprises clamp nut (22), taper briquetting (20), sidewall (3) and external screw thread thereof; The upper part outer wall of sidewall (3) is made the have scalene cone cone (15) of (14), cone (15) upper edge circumference evenly is distributed 4 above narrow slits (16), the root of cone (15) digs a groove (17), and the sidewall wall thickness attenuation that makes part in the groove is so that cone (15) distortion above the sidewall (3); Taper briquetting (20) inwall has the scalene cone (21) that the scalene cone (14) with sidewall (3) upper part cone (15) is complementary, and promptly the scalene cone (21) of assembling back taper briquetting (20) inwall becomes a face with the scalene cone (14) of sidewall (3) upper part cone (15); The lower part of sidewall (3) has external screw thread, the screw-internal thread fit of it and clamp nut (22); When clamp nut (22) when screwing, driving taper briquetting (20) moves downward, in this process, clamp nut (22) applies a pressure that points to the center of circle by the scalene cone (21) of taper briquetting (20) inwall to the scalene cone (14) of sidewall (3) upper part cone (15), under this pressure effect, because the existence of narrow slit (16), the cone (15) of sidewall (3) upper part just can inwardly be out of shape and tightens up, thereby compress metal cover board (5), eliminate the fit clearance (8) between metal cover board (5) and the sidewall (3), make metal cover board (5) and sidewall (3) fix and realize good electrical contact.
5. according to the described adjustable single hole coaxial output directional coupler of claim 1-4, it is characterized in that described microwave main transmission line can be rectangular waveguide, circular waveguide, ridge waveguide, coaxial transmission line or other microwave transmission line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100222262A CN100373688C (en) | 2005-12-06 | 2005-12-06 | Adjustable single hole coaxial output directional coupler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100222262A CN100373688C (en) | 2005-12-06 | 2005-12-06 | Adjustable single hole coaxial output directional coupler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1790805A CN1790805A (en) | 2006-06-21 |
| CN100373688C true CN100373688C (en) | 2008-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100222262A Expired - Fee Related CN100373688C (en) | 2005-12-06 | 2005-12-06 | Adjustable single hole coaxial output directional coupler |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102044735A (en) * | 2010-12-02 | 2011-05-04 | 安徽海特微波通信有限公司 | Bi-directional coupler |
| CN102315507B (en) * | 2011-07-07 | 2014-08-13 | 中国科学院等离子体物理研究所 | High-power waveguide directional coupler |
| CN103066363A (en) * | 2011-10-19 | 2013-04-24 | 成都赛纳赛德科技有限公司 | Waveguide ring coupler |
| CN103117441A (en) * | 2011-11-17 | 2013-05-22 | 成都赛纳赛德科技有限公司 | Waveguide ring coupler |
| CN108091971B (en) * | 2017-12-12 | 2024-05-17 | 江苏德是和通信科技有限公司 | High-power waveguide chain synthesizer |
| CN108091974B (en) * | 2017-12-12 | 2023-11-14 | 江苏德是和通信科技有限公司 | Rectangular waveguide directional coupler |
| CN116345105B (en) * | 2023-05-31 | 2023-08-22 | 成都沃特塞恩电子技术有限公司 | microwave coupling device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1319096A (en) * | 1969-11-20 | 1973-05-31 | Thomson Csf | High frequency coupling arrangements |
| JPH04119001A (en) * | 1990-09-07 | 1992-04-20 | Nippon Telegr & Teleph Corp <Ntt> | Directional coupler |
| JPH0774502A (en) * | 1993-09-06 | 1995-03-17 | Nec Corp | Four-terminal switching device |
| JP2003032013A (en) * | 2001-07-11 | 2003-01-31 | Matsushita Electric Ind Co Ltd | Directional coupler |
| US20040127103A1 (en) * | 2002-12-14 | 2004-07-01 | Duk-Yong Kim | Directional coupler integrated with connectors |
| CN1554135A (en) * | 2002-06-27 | 2004-12-08 | I | Directional coupler |
| CN1581571A (en) * | 2003-07-31 | 2005-02-16 | 阿尔卡特公司 | Directional coupler |
-
2005
- 2005-12-06 CN CNB2005100222262A patent/CN100373688C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1319096A (en) * | 1969-11-20 | 1973-05-31 | Thomson Csf | High frequency coupling arrangements |
| JPH04119001A (en) * | 1990-09-07 | 1992-04-20 | Nippon Telegr & Teleph Corp <Ntt> | Directional coupler |
| JPH0774502A (en) * | 1993-09-06 | 1995-03-17 | Nec Corp | Four-terminal switching device |
| JP2003032013A (en) * | 2001-07-11 | 2003-01-31 | Matsushita Electric Ind Co Ltd | Directional coupler |
| CN1554135A (en) * | 2002-06-27 | 2004-12-08 | I | Directional coupler |
| US20040127103A1 (en) * | 2002-12-14 | 2004-07-01 | Duk-Yong Kim | Directional coupler integrated with connectors |
| CN1581571A (en) * | 2003-07-31 | 2005-02-16 | 阿尔卡特公司 | Directional coupler |
Non-Patent Citations (1)
| Title |
|---|
| 定向耦合器在微波传输系统中的应用. 葛义蓉.航空计测技术，第21卷第1期. 2001 * |
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| Publication number | Publication date |
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| CN1790805A (en) | 2006-06-21 |
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