CN105489989A - High-power waveguide electrically tunable filter - Google Patents
High-power waveguide electrically tunable filter Download PDFInfo
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- CN105489989A CN105489989A CN201510980674.7A CN201510980674A CN105489989A CN 105489989 A CN105489989 A CN 105489989A CN 201510980674 A CN201510980674 A CN 201510980674A CN 105489989 A CN105489989 A CN 105489989A
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- waveguide
- coupling mechanism
- resonant cavity
- tunable filter
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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
- H01P1/207—Hollow waveguide filters
- H01P1/208—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure
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Abstract
The invention relates to a high-power waveguide electrically tunable filter in the field of communication, which is applied to a transmission device for suppressing an out-of-band interference signal in a channel of a C-band communication system. The high-power waveguide electrically tunable filter comprises a waveguide resonant cavity, a coupling mechanism, a tunable inner conductor, a choking guide mechanism and a driving mechanism, wherein the coupling mechanism comprises an input/output coupling mechanism and an inter-cavity coupling mechanism, a transmission signal enters the input/output coupling mechanism from a waveguide inlet, sequentially passes through the waveguide resonant cavity and the inter-cavity coupling mechanism and then is output from a waveguide outlet, the tunable inner conductor passes through the choking guide mechanism from a waveguide narrow edge and enters the waveguide resonant cavity, and the depth of the tunable inner conductor inserted into the waveguide resonant cavity is synchronously changed by the driving mechanism so as to complete frequency tuning. The high-power waveguide electrically tunable filter bears high power, the passband change is low in an adjustable frequency band range, the performance is stable during positive and negative frequency adjustment, and the requirements of a communication device for high bearing power, low passband change in the adjustable frequency band range and stable performance during positive and negative frequency adjustment of the electrically tunable filter are met.
Description
Technical field
The present invention relates to the communications field, especially relate to a kind of large power waveguide electrically tunable filter, be specially adapted to complete in the channel of C-band communication system the transmitting device suppressing the outer interference signal function of work strip.
Background technology
Extensive use coaxial cavity electrically tunable filter on the wave bands such as VHF, UHF, L, C of using in communication system at present, the performance of communication system is enhanced, but communication equipment still continuous to high-power, high-performance, high reliability direction continue development.Coaxial cavity electrically tunable filter more easily realizes by when frequency is lower, though at C-band small volume, but limited power capacity is only applicable to middle low power application, and waveguide cavity filter to bear power large, its bandwidth change within the scope of adjustable frequency can be made less by design of Simulation, thus meet communication system requirements.Simultaneously, in comparatively low-frequency range, the resonant cavity of electrically tunable filter contacts with generally adopting short-circuit spring leaf between tuning inner wire, performance still can, but in frequency ranges such as C, X that frequency is higher, short-circuit capability between tuning inner wire and resonant cavity should be made good, again must the synchronous and forward and reverse stable performance of each tuning inner wire when frequency tuning, then harsh requirement is proposed to the material of short-circuit spring leaf and processing technology, therefore design and a kind ofly can substitute short-circuit spring leaf and the structure of stable performance then becomes a difficult problem that designer faces.
Summary of the invention
The electrically tunable filter of stable performance when technical problem to be solved by this invention is to provide and a kind ofly works in that C-band bears that power is large, passband changes little, forward and reverse frequency modulation within the scope of frequency band adjustable.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of large power waveguide electrically tunable filter, comprise waveguide resonant cavity 1, coupling mechanism 2, tuning inner wire 3 and chokes guiding mechanism 4, coupling mechanism 2 comprises coupling mechanism 7 between input and output coupling mechanism 6 and one or more chamber; Signal transmission enters into input and output coupling mechanism 6 from input port, export from output port after sequentially passing through coupling mechanism 7 between waveguide resonant cavity 1, chamber, waveguide resonant cavity 1 and input and output coupling mechanism 6, input, output port are waveguide mouth, waveguide resonant cavity 1 is multiple, by coupling mechanism 7 cascade between chamber between each waveguide resonant cavity 1; Each tuning inner wire 3 correspondence stretches into waveguide resonant cavity 1 through a chokes guiding mechanism 4; Chokes guiding mechanism 4 comprises choke groove 10 and the sleeve 11 containing conduction axle sleeve, and sleeve 11 is fixed on Narrow Wall of Waveguide limit and wraps tuning inner wire 3; Choke groove 10, between sleeve 11 and waveguide resonant cavity 1, inwardly mills out on Narrow Wall of Waveguide limit, has gap between choke groove 10 and tuning inner wire 3, therebetween gap Filled Dielectrics.
Wherein, the degree of depth of described choke groove 10 is quarter-wave.
Wherein, be contactless short circuit between chokes guiding mechanism 4 and tuning inner wire 3, the gap air between choke groove 10 and tuning inner wire 3 or low loss dielectric are filled.
Wherein, also comprise transmission mechanism 5, transmission mechanism 5 is fixed on waveguide broadside, and all tuning inner wires 3 are all fixed on transmission mechanism 5, and the depth regulating tuning inner wire 3 to extend in waveguide resonant cavity 1 by transmission mechanism 5 completes frequency tuning.
Wherein, between described input and output coupling mechanism 6 and chamber, coupling mechanism 7 is all integrated and perpendicular to waveguide broadside, and between input and output coupling mechanism 6 and chamber, coupling mechanism 7 includes one or more perceptual pins 8 and one or more capacitive pin 9.
Wherein, the capacitive pin 9 of input and output coupling mechanism 6 is all distributed in outside perceptual pin 8, and between chamber, the capacitive pin 9 of coupling mechanism 7 is distributed between two perceptual pins 8; Perception pin 8 is cuboid with capacitive pin 9, and about coupling mechanism 2 Central Symmetry.
Wherein, all tuning inner wires 3 are measure-alike cylinder, its one end end face stretching into waveguide resonant cavity 1 is rounding horn shape or hemispherical, and all tuning inner wires 3 are all synchronized with the movement under the driving of transmission mechanism 5 perpendicular to Narrow Wall of Waveguide limit.
Owing to have employed technique scheme, the technological innovation acquired by the present invention is:
1, the present invention is operated in C-band, and adopt waveguide resonant cavity and Waveguide interface, bearing power can reach 1000W, meets communication equipment to powerful requirement.
2, the present invention newly devises integrated coupling mechanism, passband is changed within the scope of frequency band adjustable little, and belt resistance inhibitor system substantially without deterioration, meets communication equipment and within the scope of frequency band adjustable, changes little requirement to filter passband.
3, the present invention devises novel non-contact chokes guiding mechanism, without directly contacting between waveguide resonant cavity with tuning inner wire, meets the requirement of stable performance during communication equipment frequency modulation forward and reverse to filter.
Accompanying drawing explanation
Fig. 1 is filter construction schematic diagram of the present invention;
Fig. 2 is coupling mechanism schematic diagram of the present invention;
Fig. 3 is chokes guiding mechanism of the present invention and tuning inner wire schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further details:
Fig. 1 is filter construction schematic diagram of the present invention.Waveguide electrically tunable filter of the present invention comprises waveguide resonant cavity, coupling mechanism, tuning inner wire, chokes guiding mechanism and transmission mechanism, and wherein coupling mechanism can be divided into coupling mechanism between input and output coupling mechanism and chamber.Signal transmission enters into input and output coupling mechanism from waveguide entrance, exports after sequentially passing through coupling mechanism between waveguide resonant cavity, chamber, waveguide resonant cavity, input and output coupling mechanism from waveguide outlet.Resonant cavity type is waveguide form, interface is waveguide mouth, with coupling mechanism cascade between chamber between each resonant cavity, tuning inner wire stretches into waveguide resonant cavity through chokes guiding mechanism, and the depth regulating tuning inner wire to extend in waveguide resonant cavity by transmission mechanism completes frequency tuning.This structural design meets communication equipment can bear powerful requirement to filter.
Fig. 2 is coupling mechanism schematic diagram between input and output coupling mechanism of the present invention and chamber.Between input and output coupling mechanism and chamber, coupling mechanism is integrated and perpendicular to waveguide broadside, all containing perceptual pin and capacitive pin; The capacitive pin of input and output coupling mechanism is distributed in the outside of perceptual pin, and between chamber, the capacitive pin of coupling mechanism is distributed between two perceptual pins.Perception pin and capacitive pin are rectangular shaped post, and upper and lower, symmetrical about filter center line.This structural design meets communication equipment and within the scope of frequency band adjustable, changes little requirement to filter passband.
Fig. 3 is chokes guiding mechanism of the present invention and tuning inner wire schematic diagram.Chokes guiding mechanism is positioned at Narrow Wall of Waveguide limit, and being included in the degree of depth is quarter-wave choke groove and the sleeve containing conduction axle sleeve; Be contactless short circuit between chokes guiding mechanism and tuning inner wire, gap available air or low loss dielectric are filled therebetween.All tuning inner wires are measure-alike cylinder, it stretches into one end end face rounding of waveguide resonant cavity or is processed into hemispherical, all tuning inner wires are all fixed on a transmission mechanism, are synchronized with the movement under being made in the driving of transmission mechanism perpendicular to Narrow Wall of Waveguide limit.The requirement of stable performance when this structural design meets communication equipment frequency modulation forward and reverse to filter.
Mounting structure of the present invention is as follows: the input of filter, output waveguide mouth are connected with the input of communication equipment, delivery outlet respectively.Coupling mechanism and waveguide resonant cavity are assembled into one, chokes guiding mechanism is positioned on the narrow limit of waveguide resonant cavity, tuning inner wire one end is fixed on transmission mechanism, and one end enters waveguide resonant cavity through chokes guiding mechanism, and transmission mechanism is screwed on waveguide resonant cavity.
Claims (7)
1. a large power waveguide electrically tunable filter, comprise waveguide resonant cavity (1), coupling mechanism (2), tuning inner wire (3) and chokes guiding mechanism (4), coupling mechanism (2) comprises coupling mechanism (7) between input and output coupling mechanism (6) and one or more chamber; Signal transmission enters into input and output coupling mechanism (6) from input port, export from output port after sequentially passing through coupling mechanism (7) between waveguide resonant cavity (1), chamber, waveguide resonant cavity (1) and input and output coupling mechanism (6), input, output port are waveguide mouth, waveguide resonant cavity (1), for multiple, passes through coupling mechanism (7) cascade between chamber between each waveguide resonant cavity (1); It is characterized in that: each tuning inner wire (3) correspondence stretches into waveguide resonant cavity (1) through a chokes guiding mechanism (4); Chokes guiding mechanism (4) comprises choke groove (10) and the sleeve (11) containing conduction axle sleeve, and sleeve (11) is fixed on Narrow Wall of Waveguide limit and wraps tuning inner wire (3); Choke groove (10) is positioned between sleeve (11) and waveguide resonant cavity (1), inwardly mill out on Narrow Wall of Waveguide limit, gap is had, therebetween gap Filled Dielectrics between choke groove (10) and tuning inner wire (3).
2. a kind of large power waveguide electrically tunable filter according to claim 1, is characterized in that: the degree of depth of described choke groove (10) is quarter-wave.
3. a kind of large power waveguide electrically tunable filter according to claim 1 and 2, it is characterized in that: be contactless short circuit between chokes guiding mechanism (4) and tuning inner wire (3), the gap air between choke groove (10) and tuning inner wire (3) or low loss dielectric are filled.
4. a kind of large power waveguide electrically tunable filter according to claim 1, it is characterized in that: also comprise transmission mechanism (5), transmission mechanism (5) is fixed on waveguide broadside, all tuning inner wires (3) are all fixed on transmission mechanism (5), and the depth regulating tuning inner wire (3) to extend in waveguide resonant cavity (1) by transmission mechanism (5) completes frequency tuning.
5. a kind of large power waveguide electrically tunable filter according to claim 1, it is characterized in that: between described input and output coupling mechanism (6) and chamber, coupling mechanism (7) is all integrated and perpendicular to waveguide broadside, between input and output coupling mechanism (6) and chamber, coupling mechanism (7) includes one or more perceptual pin (8) and one or more capacitive pin (9).
6. a kind of large power waveguide electrically tunable filter according to claim 5, it is characterized in that: the capacitive pin (9) of input and output coupling mechanism (6) is all distributed in perceptual pin (8) outside, and between chamber, the capacitive pin (9) of coupling mechanism (7) is distributed between two perceptual pins (8); Perception pin (8) and capacitive pin (9) are cuboid, and about coupling mechanism (2) Central Symmetry.
7. a kind of large power waveguide electrically tunable filter according to claim 1, it is characterized in that: all tuning inner wires (3) are measure-alike cylinder, its one end end face stretching into waveguide resonant cavity (1) is rounding horn shape or hemispherical, and all tuning inner wires (3) is all synchronized with the movement under the driving of transmission mechanism (5) perpendicular to Narrow Wall of Waveguide limit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510980674.7A CN105489989B (en) | 2015-12-24 | 2015-12-24 | A kind of large power waveguide electrically tunable filter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510980674.7A CN105489989B (en) | 2015-12-24 | 2015-12-24 | A kind of large power waveguide electrically tunable filter |
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| CN105489989A true CN105489989A (en) | 2016-04-13 |
| CN105489989B CN105489989B (en) | 2018-06-26 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109256609A (en) * | 2017-07-13 | 2019-01-22 | 昇达科技股份有限公司 | Has the contactless frequency automatic adjusting and testing filter of anti-leak chamber |
| CN110364796A (en) * | 2019-02-12 | 2019-10-22 | 深圳铭杰医疗科技有限公司 | A kind of telescopic waveguide and accelerator system |
| CN111816967A (en) * | 2020-07-16 | 2020-10-23 | 成都赛纳微波科技有限公司 | High-power waveguide tuner |
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| EP0047203B1 (en) * | 1980-08-29 | 1985-11-21 | Thomson-Csf | Microwave filter with a dielectric resonator tunable over a large bandwidth |
| JPH0878914A (en) * | 1994-08-30 | 1996-03-22 | Daihen Corp | Movable stub tuner for microwave |
| JP2009253737A (en) * | 2008-04-08 | 2009-10-29 | Mitsubishi Electric Corp | Rotary joint |
| CN101702456A (en) * | 2009-11-30 | 2010-05-05 | 西南交通大学 | Minitype broadband throttling device used for transmission shaft in guided wave system |
| CN201466184U (en) * | 2009-08-06 | 2010-05-12 | 中国电子科技集团公司第五十四研究所 | Ku band electric adjustable filter |
| CN201466178U (en) * | 2009-08-03 | 2010-05-12 | 中国电子科技集团公司第五十四研究所 | Adjustable duplexer |
| CN205303634U (en) * | 2015-12-24 | 2016-06-08 | 中国电子科技集团公司第五十四研究所 | High -power waveguide electrically tunable filter |
-
2015
- 2015-12-24 CN CN201510980674.7A patent/CN105489989B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0047203B1 (en) * | 1980-08-29 | 1985-11-21 | Thomson-Csf | Microwave filter with a dielectric resonator tunable over a large bandwidth |
| JPH0878914A (en) * | 1994-08-30 | 1996-03-22 | Daihen Corp | Movable stub tuner for microwave |
| JP2009253737A (en) * | 2008-04-08 | 2009-10-29 | Mitsubishi Electric Corp | Rotary joint |
| CN201466178U (en) * | 2009-08-03 | 2010-05-12 | 中国电子科技集团公司第五十四研究所 | Adjustable duplexer |
| CN201466184U (en) * | 2009-08-06 | 2010-05-12 | 中国电子科技集团公司第五十四研究所 | Ku band electric adjustable filter |
| CN101702456A (en) * | 2009-11-30 | 2010-05-05 | 西南交通大学 | Minitype broadband throttling device used for transmission shaft in guided wave system |
| CN205303634U (en) * | 2015-12-24 | 2016-06-08 | 中国电子科技集团公司第五十四研究所 | High -power waveguide electrically tunable filter |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109256609A (en) * | 2017-07-13 | 2019-01-22 | 昇达科技股份有限公司 | Has the contactless frequency automatic adjusting and testing filter of anti-leak chamber |
| CN109256609B (en) * | 2017-07-13 | 2020-04-03 | 昇达科技股份有限公司 | Non-contact type frequency automatic adjusting and detecting filter with leakage-proof cavity |
| CN110364796A (en) * | 2019-02-12 | 2019-10-22 | 深圳铭杰医疗科技有限公司 | A kind of telescopic waveguide and accelerator system |
| CN111816967A (en) * | 2020-07-16 | 2020-10-23 | 成都赛纳微波科技有限公司 | High-power waveguide tuner |
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| Publication number | Publication date |
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| CN105489989B (en) | 2018-06-26 |
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