CN202221805U - No-debug coaxial cavity filter - Google Patents
No-debug coaxial cavity filter Download PDFInfo
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- CN202221805U CN202221805U CN2011203890609U CN201120389060U CN202221805U CN 202221805 U CN202221805 U CN 202221805U CN 2011203890609 U CN2011203890609 U CN 2011203890609U CN 201120389060 U CN201120389060 U CN 201120389060U CN 202221805 U CN202221805 U CN 202221805U
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Abstract
The utility model relates to the technical fields of the filter, in particular to a no-debug coaxial cavity filter, comprising: an upper cover plate, a cavity, a resonance pole and a coupling tap, wherein the resonance pole is provided with a resonance pole cavity and a tuning screw extending into the resonance pole cavity is mounted on the upper cover plate; the tuning screw is provided with a thread on one end and a light rod on another end; the coupling tap is flexibly arranged in a though hole in a screwed type; a coupling window comprises a first coupling window, a second coupling window and a third coupling window; a resonance disk is arranged on an upper end surface of the resonance pole. The size and accuracy of the parts such as the length of the tuning screw extending into the resonance pole cavity, the depth of the resonance cavity, the height of the resonance pole, the height of the resonance pole cavity, the distance between the bottom of the tuning screw and the bottom of the resonance pole cavity, the distance between the coupling tap and the resonance pole and the width of the coupling window are controlled, thus one-time completed assembly is realized, the late-stage debugging is not needed, the debugging cost is saved and the performance is high.
Description
Technical field
The utility model relates to filter field, particularly relates to a kind of nothing debugging coaxial cavity filter.
Background technology
Filter is a characteristic of utilizing capacitive reactance or induction reactance to change with frequency, and the different response of input signal generation to different frequency lets the signal of specific a certain frequency band pass through smoothly, and suppresses the signal of other frequencies.
Filter is one of parts the most frequently used in the radio circuit, because the specific requirement of use occasion is different, people usually need design different filter.
In the prior art, the coaxial cavity filter design feature has determined filter all to need debugging, and debugging difficulty is big, and training debugging technique personnel's time is long, and debugging cost is high, and it is bigger influenced by human factor.And the filter that uses the PCB material to do, though debugging is easy to, performance is weaker than coaxial filter again far away.
Therefore, to the problem that exists in the prior art, needing badly provides a kind of debugging that do not need, and can save debugging cost, the nothing debugging coaxial cavity filter that performance is high.
Summary of the invention
The purpose of the utility model is to avoid weak point of the prior art and a kind of nothing debugging coaxial cavity filter is provided, and this does not have debugging coaxial cavity filter assembling one-time-reach-place, does not need the later stage debugging, can save debugging cost, and performance is high.
The purpose of the utility model realizes through following technical measures.
A kind of nothing debugging coaxial cavity filter is provided, comprises upper cover plate, cavity, resonance post and coupling tap;
Said cavity is made up of side plate, base plate and chamber internal partition wall all around, and said resonance post is arranged at said inside cavity, and said upper cover plate is arranged at the upper surface of said cavity, and said coupling tap setting is in said side plate;
Said resonance post is provided with resonance post inner chamber, and the tuning screw rod that stretches to said resonance post inner chamber is installed at said upper cover plate;
The side plate of said cavity is provided with through hole, and said through hole is provided with the coupling tap, and said coupling is taken out
Head is vertical with said cavity side plate and be positioned at the cavity side intralamellar part;
Said tuning screw rod comprises the end of thread and smooth end, and the said end of thread is arranged at said upper cover plate,
Said smooth end stretches into said resonance post inner chamber; Said coupling tap is movably set in said through hole; Said cavity is set at least four resonant cavitys through said partition wall, and said partition wall is provided with coupling window, and said coupling window comprises first coupling window, second coupling window and the 3rd coupling window; The upper surface of said resonance post is provided with resonance plate, and the axis of said resonance post is vertical with said resonance plate, and an end of said tuning screw rod is exposed to said resonance plate;
The length that said tuning screw rod stretches into said resonance post inner chamber is set to 17.65 to 17.68 millimeters; The said resonant cavity degree of depth is set to 34.999 to 35.001 millimeters; Said resonance post height is set to 33.449 to 33.501 millimeters, and the height of said resonance post inner chamber is set to 30.49 to 30.51 millimeters; The distance of the bottom of the bottom of said tuning screw rod and said resonance post inner chamber is set to greater than 3 to 5 millimeters; The distance of said coupling tap and resonance post is set to 0.99 to 1.01 millimeter; The wide of said first coupling window and the 3rd coupling window is set to 13.05 to 13.15 millimeters; The wide of said second coupling window is set to 11.47 to 11.57 millimeters.
The length that said tuning screw rod stretches into said resonance post inner chamber is set to 17.67 millimeters, and the said resonant cavity degree of depth is set to 35 millimeters, and said resonance post height is set to 33.5 millimeters, and the height of said resonance post inner chamber is set to 30.5 millimeters; The distance of the bottom of the bottom of said tuning screw rod and said resonance post inner chamber is set to greater than 3 to 5 millimeters; The distance of said coupling tap and resonance post is set to 1 millimeter; The wide of said first coupling window and the 3rd coupling window is set to 13.1 millimeters; The wide of said second coupling window is set to 11.52 millimeters.
Said resonance post is set to level Four; Be respectively first order resonance post, second level resonance post, third level resonance post and fourth stage resonance post; Said first order resonance post, second level resonance post, third level resonance post and fourth stage resonance post are set in turn in said inside cavity, and said first order resonance post and fourth stage resonance post all are connected with connector.
Distance between said four resonance posts all equates.
Said resonant cavity is set to square, the length of said resonant cavity and widely all be set to 29 to 31 millimeters; The diameter of said resonance post inner chamber is set to 7 to 8 millimeters; The external diameter of said resonance plate is set to 17.5 to 18.5 millimeters; Be provided with fillet between per two sidewalls of said resonant cavity, the radius of said fillet is set to 5.5 to 6.5 millimeters.
The length of said resonant cavity and widely all be set to 30 millimeters; The diameter of said resonance post inner chamber is set to 7.5 millimeters; The external diameter of said resonance plate is set to 18 millimeters; Be provided with fillet between per two sidewalls of said resonant cavity, the radius of said fillet is set to 6 millimeters.
Also be provided with keeper, said keeper is arranged at two diagonal angles of cavity, and said keeper passes said upper cover plate and is fixed in said cavity.
Said keeper is set to pin.
Said through hole comprises first through hole and second through hole; Said first through hole is arranged at the side plate near the said first resonance post; Said second through hole is arranged at the side plate near said the 4th resonance post, and said first through hole and second through hole all are provided with said connector, and said connector is connected with said coupling tap; Said connector is vertical with said side plate, and it is outside that said connector is arranged at said side plate.
Said connector is set to N Connector.
The beneficial effect of the utility model:
The utility model compared with prior art has following characteristics: the nothing debugging coaxial cavity filter assembling one-time-reach-place of the utility model, do not need the later stage debugging, and can save debugging cost, performance is high.
Description of drawings
Utilize accompanying drawing that the utility model is further specified, but the content in the accompanying drawing does not constitute any restriction to the utility model.
Fig. 1 is a kind of structural representation that does not have an angle of debugging coaxial cavity filter of the utility model.
Fig. 2 is a kind of schematic cross-section that does not have the debugging coaxial cavity filter of the utility model.
In Fig. 1 and Fig. 2, include:
Upper cover plate 1; Cavity 2; Resonance post 3; Coupling tap 4; Tuning screw rod 5; Clamp nut 6; Pin 7; N Connector 8; Resonance post inner chamber 9; The length L 1 of resonance post inner chamber; The resonant cavity depth H; Resonance post height h; The height h1 of resonance post inner chamber; The distance A of the bottom of the bottom of tuning screw rod and resonance post inner chamber; Coupling tap and resonance post apart from B; The wide W1 of first coupling window and the wide W1 of the 3rd coupling window are equal; The wide W2 of second coupling window; The long a of resonant cavity; The wide a of resonant cavity; The diameter Dk of resonance post inner chamber; The D outer diameter p of resonance plate; The radius R 1 of fillet.
Embodiment
In conjunction with following examples the utility model is described further.
embodiment 1.
A kind of nothing debugging coaxial cavity filter of present embodiment is as depicted in figs. 1 and 2, comprises upper cover plate 1, cavity 2, resonance post 3 and coupling tap 4;
The side plate of cavity 2 is provided with through hole, and through hole is provided with coupling tap 4, and coupling tap 4 is vertical with cavity 2 side plates and be positioned at cavity 2 side plates inside;
Tuning screw rod 5 comprises the end of thread and smooth end, and the end of thread is arranged at upper cover plate 1, and smooth end stretches into resonance post inner chamber 9; Coupling tap 4 is movably set in through hole; Cavity 2 is set at least four resonant cavitys through partition wall, and partition wall is provided with coupling window, and coupling window comprises first coupling window, second coupling window and the 3rd coupling window; The upper surface of resonance post 3 is provided with resonance plate, and the axis of resonance post 3 is vertical with resonance plate, and an end of tuning screw rod 5 is exposed to resonance plate;
Coupling tap 4 adopts screw-in to be movably set in through hole.
The length L 1 that tuning screw rod 5 stretches into resonance post inner chamber 9 is set to 17.65 to 17.68 millimeters; The resonant cavity depth H is set to 34.999 to 35.001 millimeters; Resonance post 3 height h are set to 33.449 to 33.501 millimeters, and the height h1 of resonance post inner chamber 9 is set to 30.49 to 30.51 millimeters; The distance A of the bottom of the bottom of tuning screw rod 5 and resonance post inner chamber 9 is set to greater than 3 to 5 millimeters; Coupling tap 4 is set to 0.99 to 1.01 millimeter with resonance post 3 apart from B; The wide W1 of first coupling window and the wide W1 of the 3rd coupling window all are set to 13.05 to 13.15 millimeters; The wide W2 of second coupling window is set to 11.47 to 11.57 millimeters.
Resonant cavity is set to square, and the long a of resonant cavity and wide a all are set to 29 to 31 millimeters; The diameter Dk of resonance post inner chamber 9 is set to 7 to 8 millimeters; The D outer diameter p of resonance plate is set to 17.5 to 18.5 millimeters; Be provided with fillet between per two sidewalls of resonant cavity, the radius R 1 of fillet is set to 5.5 to 6.5 millimeters.
Tuning screw rod 5 is fixedly set in upper cover plate 1 through clamp nut 6.
The utility model compared with prior art has following characteristics: through the structure that tuning screw rod 5 is set to a head thread and a polished rod is set; Coupling tap 4 adopts screw-in to be movably set in through hole; The length L 1 that tuning screw rod 5 stretches into resonance post inner chamber 9 is set is set to 17.65 to 17.68 millimeters; Design resonant cavity depth H is set to 34.999 to 35.001 millimeters; Resonance post 3 height h are set to 33.449 to 33.501 millimeters, and the h1 of resonance post inner chamber 9 is set to 30.49 to 30.51 millimeters; The distance of tuning screw rod 5 relative resonance post inner chambers 9 bottoms is set to greater than 3 to 5 millimeters; Coupling tap 4 is set to 0.99 to 1.01 millimeter with the distance of resonance post 3; The wide W1 of first coupling window and the wide W1 of the 3rd coupling window all are set to 13.05 to 13.15 millimeters; The wide W2 of second coupling window is set to 11.47 to 11.57 millimeters, then can make this nothing debugging coaxial cavity filter not need debugging, can save debugging cost, and performance is high.
A kind of nothing debugging coaxial cavity filter of present embodiment, its each functions of components is following:
Tuning screw rod 5: the frequency that is used for confirming filter;
Clamp nut 6: fixing tuning screw rod 5 and cover plate;
Upper cover plate 1: be used for shield electromagnetic signals;
Cavity 2: filter main body;
Resonance post 3: be used for confirming of filter frequencies and other characteristics;
Coupling tap 4: be used to the electromagnetic energy that is coupled.
A kind of nothing debugging coaxial cavity filter of present embodiment through setting up the basic electromagnetic simulation model, carries out labor to the size of each parts of filter, and analytic process is following:
1) tuning screw rod 5 stretches into the influence of length L 1 variation of resonance post inner chamber 9 to response curve: L1 changes to 16.63 millimeters from 17.62 millimeters; The variable quantity of frequency is very little, and is when L1 is 17.67 millimeters, little to the response curve influence; The basic no influence of transmission; Reflection has certain fluctuation, but be no more than 1dB, and promptly LI is controlled at 17.65 to 17.68 millimeters and can meets the demands;
2) when the resonant cavity depth H changed, frequency drift was very obvious, and change in size 0.01, its frequency change are 0.0011023GHz, and promptly 1.1M is sizable to filter effects, needed control H in 34.999 to 35.001 millimeters scopes, can meet the demands;
3) change in size of resonance post 3 height h is 0.01 o'clock, and curve frequency drift amount is 1.2M, changes and follows cavity 2 change in depth trend almost big, and needing control h be 33.449 to 33.501 millimeters;
4) tuning post inner chamber does not have any influence to filter response curve deeply basically; But this must have a precondition; The distance that is tuning screw rod 5 relative resonance post inner chambers 9 bottoms is set to greater than 3 to 5 millimeters; The distance of tuning screw rod 5 relative resonance post inner chambers 9 bottoms is near more, and frequency change is obvious more;
5) 4 pairs of frequency influences of coupling tap are little, and are bigger to the echo influence, and coupling tap 4 is controlled at 0.99 to 1.01 millimeter with the distance of resonance post 3;
6) coupling window is less to frequency influence, echo is also influenced smaller, and the wide W1 of first coupling window and the wide W1 of the 3rd coupling window all are set to 13.05 to 13.15 millimeters; The wide W2 of second coupling window is set to 11.47 to 11.57 millimeters.
A kind of nothing debugging coaxial cavity filter; Other structures of present embodiment are the same with embodiment 1; Difference is: resonance post 3 is set to level Four; Be respectively first order resonance post, second level resonance post, third level resonance post and fourth stage resonance post, first order resonance post, second level resonance post, third level resonance post and fourth stage resonance post are set in turn in inside cavity, and first order resonance post and fourth stage resonance post all are connected with connector.
Need to prove: the progression of filter not merely is limited to level Four, can be designed to the filter of other progression according to actual needs.
Distance between four resonance posts 3 all equates.Meet resonance characteristic, easy to process.
A kind of nothing debugging coaxial cavity filter; Other structures of present embodiment are the same with embodiment 1; Difference is: the length L 1 that tuning screw rod 5 stretches into resonance post inner chamber 9 is set to 17.67 millimeters; The resonant cavity depth H is set to 35 millimeters, and resonance post 3 height h are set to 33.5 millimeters, and the h1 of resonance post inner chamber 9 is set to 30.5 millimeters; The distance of tuning screw rod 5 relative resonance post inner chambers 9 bottoms is set to greater than 3 to 5 millimeters; Coupling tap 4 is set to 1 millimeter with the distance of resonance post; The wide W1 of first coupling window and the wide W1 of the 3rd coupling window all are set to 13.1 millimeters; The wide W2 of second coupling window is set to 11.52 millimeters.
The long a of resonant cavity and wide a all are set to 30 millimeters; The diameter Dk of resonance post inner chamber 9 is set to 7.5 millimeters; The D outer diameter p of resonance plate is set to 18 millimeters; Be provided with fillet between per two sidewalls of resonant cavity, the radius R 1 of fillet is set to 6 millimeters.
Need to prove: the cited element size of present embodiment is merely more excellent size, not merely is limited to the cited element size of present embodiment, also can be set to other sizes in the allowed band according to actual needs.
Also be provided with keeper, keeper is arranged at two diagonal angles of cavity 2, and keeper passes upper cover plate 1 and is fixed in cavity 2.For cover plate is well cooperated with cavity 2, and prevent the random variation of frequency, use keeper at cavity 2 during with the cover plate assembling, to guarantee the assembly precision between cavity 2 and the cover plate.
Keeper is set to pin 7.Need to prove: keeper not merely is set to pin 7, also can be set to the parts that other can position according to actual needs.
Through hole comprises first through hole and second through hole; First through hole is arranged at the side plate near the first resonance post; Second through hole is arranged at the side plate near the 4th resonance post, and first through hole and second through hole all are provided with connector, and connector is connected with coupling tap 4; Connector is vertical with side plate, and connector is arranged at the side plate outside.The connector that the connector conduct that is provided with is connected with outside other equipment.
Connector is set to N Connector 8.Need to prove: connector not merely is limited to and is set to N Connector 8, also can be set to other connectors according to actual needs.
Should be noted that at last; Above embodiment only be used to explain the utility model technical scheme but not to the restriction of the utility model protection range; Although the utility model has been done detailed description with reference to preferred embodiment; Those of ordinary skill in the art should be appreciated that and can make amendment or be equal to replacement the technical scheme of the utility model, and do not break away from the essence and the scope of the utility model technical scheme.
Claims (10)
1. one kind is not had the debugging coaxial cavity filter, comprises upper cover plate, cavity, resonance post and coupling tap;
Said cavity is made up of side plate, base plate and chamber internal partition wall all around, and said resonance post is arranged at said inside cavity, and said upper cover plate is arranged at the upper surface of said cavity, and said coupling tap setting is in said side plate;
Said resonance post is provided with resonance post inner chamber, and the tuning screw rod that stretches to said resonance post inner chamber is installed at said upper cover plate;
The side plate of said cavity is provided with through hole, and said through hole is provided with the coupling tap, and said coupling tap is vertical with said cavity side plate and be positioned at the cavity side intralamellar part;
It is characterized in that: said tuning screw rod comprises the end of thread and smooth end, and the said end of thread is arranged at said upper cover plate, and said smooth end stretches into said resonance post inner chamber; Said coupling tap is movably set in said through hole; Said cavity is set at least four resonant cavitys through said partition wall, and said partition wall is provided with coupling window, and said coupling window comprises first coupling window, second coupling window and the 3rd coupling window; The upper surface of said resonance post is provided with resonance plate, and the axis of said resonance post is vertical with said resonance plate, and an end of said tuning screw rod is exposed to said resonance plate;
The length that said tuning screw rod stretches into said resonance post inner chamber is set to 17.65 to 17.68 millimeters; The said resonant cavity degree of depth is set to 34.999 to 35.001 millimeters; Said resonance post height is set to 33.449 to 33.501 millimeters, and the height of said resonance post inner chamber is set to 30.49 to 30.51 millimeters;
The distance of the bottom of the bottom of said tuning screw rod and said resonance post inner chamber is set to greater than 3 to 5 millimeters;
The distance of said coupling tap and resonance post is set to 0.99 to 1.01 millimeter; The wide of said first coupling window and the 3rd coupling window is set to 13.05 to 13.15 millimeters; The wide of said second coupling window is set to 11.47 to 11.57 millimeters.
2. a kind of nothing debugging coaxial cavity filter according to claim 1; It is characterized in that: the length that said tuning screw rod stretches into said resonance post inner chamber is set to 17.67 millimeters; The said resonant cavity degree of depth is set to 35 millimeters; Said resonance post height is set to 33.5 millimeters, and the height of said resonance post inner chamber is set to 30.5 millimeters; The distance of the bottom of the bottom of said tuning screw rod and said resonance post inner chamber is set to greater than 3 to 5 millimeters; The distance of said coupling tap and resonance post is set to 1 millimeter; The wide of said first coupling window and the 3rd coupling window is set to 13.1 millimeters; The wide of said second coupling window is set to 11.52 millimeters.
3. a kind of nothing debugging coaxial cavity filter according to claim 1; It is characterized in that: said resonance post is set to level Four; Be respectively first order resonance post, second level resonance post, third level resonance post and fourth stage resonance post; Said first order resonance post, second level resonance post, third level resonance post and fourth stage resonance post are set in turn in said inside cavity, and said first order resonance post and fourth stage resonance post all are connected with connector.
4. a kind of nothing debugging coaxial cavity filter according to claim 3, it is characterized in that: the distance between said four resonance posts all equates.
5. a kind of nothing debugging coaxial cavity filter according to claim 1, it is characterized in that: said resonant cavity is set to square, the length of said resonant cavity and widely all be set to 29 to 31 millimeters; The diameter of said resonance post inner chamber is set to 7 to 8 millimeters; The external diameter of said resonance plate is set to 17.5 to 18.5 millimeters; Be provided with fillet between per two sidewalls of said resonant cavity, the radius of said fillet is set to 5.5 to 6.5 millimeters.
6. a kind of nothing debugging coaxial cavity filter according to claim 1 is characterized in that: the length of said resonant cavity and widely all be set to 30 millimeters; The diameter of said resonance post inner chamber is set to 7.5 millimeters; The external diameter of said resonance plate is set to 18 millimeters; Be provided with fillet between per two sidewalls of said resonant cavity, the radius of said fillet is set to 6 millimeters.
7. a kind of nothing debugging coaxial cavity filter according to claim 1, it is characterized in that: also be provided with keeper, said keeper is arranged at two diagonal angles of cavity, and said keeper passes said upper cover plate and is fixed in said cavity.
8. a kind of nothing debugging coaxial cavity filter according to claim 1, it is characterized in that: said keeper is set to pin.
9. a kind of nothing debugging coaxial cavity filter according to claim 3; It is characterized in that: said through hole comprises first through hole and second through hole, and said first through hole is arranged at the side plate near the said first resonance post, and said second through hole is arranged at the side plate near said the 4th resonance post; Said first through hole and second through hole all are provided with said connector; Said connector is connected with said coupling tap, and said connector is vertical with said side plate, and it is outside that said connector is arranged at said side plate.
10. a kind of nothing debugging coaxial cavity filter according to claim 9, it is characterized in that: said connector is set to N Connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203890609U CN202221805U (en) | 2011-10-13 | 2011-10-13 | No-debug coaxial cavity filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203890609U CN202221805U (en) | 2011-10-13 | 2011-10-13 | No-debug coaxial cavity filter |
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| Publication Number | Publication Date |
|---|---|
| CN202221805U true CN202221805U (en) | 2012-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203890609U Expired - Fee Related CN202221805U (en) | 2011-10-13 | 2011-10-13 | No-debug coaxial cavity filter |
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| Country | Link |
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| CN (1) | CN202221805U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014047820A1 (en) * | 2012-09-26 | 2014-04-03 | 华为技术有限公司 | Cavity filter |
| CN106356596A (en) * | 2016-09-26 | 2017-01-25 | 湖南基石通信技术有限公司 | Tuning-screw-based three-cavity filter |
| CN110416671A (en) * | 2019-06-12 | 2019-11-05 | 广东通宇通讯股份有限公司 | Resonator, cavity body filter and its adjustment method |
| CN110770968A (en) * | 2017-03-06 | 2020-02-07 | 通玉科技有限公司 | Housing structure of RF filter and manufacturing method of the housing structure |
-
2011
- 2011-10-13 CN CN2011203890609U patent/CN202221805U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014047820A1 (en) * | 2012-09-26 | 2014-04-03 | 华为技术有限公司 | Cavity filter |
| CN106356596A (en) * | 2016-09-26 | 2017-01-25 | 湖南基石通信技术有限公司 | Tuning-screw-based three-cavity filter |
| CN110770968A (en) * | 2017-03-06 | 2020-02-07 | 通玉科技有限公司 | Housing structure of RF filter and manufacturing method of the housing structure |
| CN110416671A (en) * | 2019-06-12 | 2019-11-05 | 广东通宇通讯股份有限公司 | Resonator, cavity body filter and its adjustment method |
| CN110416671B (en) * | 2019-06-12 | 2021-11-02 | 广东通宇通讯股份有限公司 | Resonator, cavity filter and debugging method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120516 Termination date: 20181013 |
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| CF01 | Termination of patent right due to non-payment of annual fee |