CN202651322U - Microstrip line band pass filter - Google Patents
Microstrip line band pass filter Download PDFInfo
- Publication number
- CN202651322U CN202651322U CN 201220207066 CN201220207066U CN202651322U CN 202651322 U CN202651322 U CN 202651322U CN 201220207066 CN201220207066 CN 201220207066 CN 201220207066 U CN201220207066 U CN 201220207066U CN 202651322 U CN202651322 U CN 202651322U
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- CN
- China
- Prior art keywords
- microstrip line
- pass filter
- band pass
- cavity
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model relates to the filter technology field, and especially relates to a microstrip line band pass filter. The microstrip line band pass filter includes a cavity and a cover plate which covers the cavity. The cavity is provided with connectors which input and output the signal of the microstrip line band pass filter, coupling metal sheets which transmit the signal received by the input and output connectors, and multiple circuit boards which receive the signal of the coupling metal sheets and resonate the signal to an ideal frequency, and insulated screws which adjust the distance. The circuit boards are connected with the coupling metal sheets via the insulated screws. The multiple circuit boards are assembled into a microstrip line by the insulated screws which are made of nonconductive material, so the assembly and disassembly are easy, and the adjustment is easy after assembly. The bandwidth of the band pass filter adjusts the trap wave property according to the up and down movements of the insulated screws. After the microstrip line is assembled in the cavity, the bandwidth and the trap wave property are easy to adjust. The microstrip line band pass filter is suitable for the base station which requires low loss and wide band domain, and has the advantages of small radiation loss, miniaturization, and low cost.
Description
Technical field:
The utility model relates to the wave filter technology field, relates in particular to the Microstrip Bandpass Filter that makes it to form microstrip line between a kind of a plurality of wiring board with non-conducting material screw assembling.
Background technology:
Band pass filter is one and allows the ripple of special frequency channel to pass through as the parts that use at various communication base stations, shields simultaneously the passive component of other frequency ranges.Fig. 1 is the structural representation of the mode of resonance band pass filter of prior art.Existing mode of resonance band pass filter comprises the joint 101 of input/output signal, the coupling piece 102 of coupled signal, the dielectric resonator 103 of resonance frequency, dielectric resonator 103, the window 104 of conducted signal is used for adjusting the trap coaxial line 105 of attenuation characteristic and the cavity 106 of putting these key elements, and its signal is inputted from input adapter, by coupling piece, resonator, window, pass in this order.
The insertion loss of this band pass filter and the attenuation characteristic of mask tape etc. are for embodying the important elements of performance of filter, and especially in order to reduce the interference of adjacent frequency bands or uplink and downlink interband, the shielding attenuation characteristic in the specific band must be fine.Owing to previous reasons, the high dielectric resonator of prior art normal operation resonance degree, but there is design and makes the problem difficult, that cost is high.
The utility model content:
The purpose of this utility model is exactly to provide between a kind of a plurality of wiring board for the deficiency of prior art existence to assemble the formation microstrip line, install and remove Microstrip Bandpass Filter easy, the rear easy adjusting of installation with non-conducting material screw.
To achieve these goals, the technical solution adopted in the utility model is:
Microstrip Bandpass Filter, it includes cavity, lid is located at the cover plate on the cavity, the coupling sheet metal, the signal that receives the coupling sheet metal and the resonance that connector for the signal input and output of Microstrip Bandpass Filter are installed on the cavity, pass on the signal that the input/output terminal connector receives is to a plurality of wiring boards of ideal frequency, the insulating screw of adjustable range, and wiring board is connected by insulating screw between the sheet metal with being coupled.
Setting is arranged in parallel between described wiring board and the coupling sheet metal.
One end and the connector of described coupling sheet metal are welded and fixed.
The utility model beneficial effect is: the utility model includes cavity, lid is located at the cover plate on the cavity, connector for the signal input and output of Microstrip Bandpass Filter is installed on the cavity, pass on the coupling sheet metal of the signal of input/output terminal connector reception, receive the signal of coupling sheet metal and a plurality of wiring boards that resonance arrives ideal frequency, the insulating screw of adjustable range, wiring board is connected by insulating screw between the sheet metal with coupling, form microstrip line with non-conducting material insulating screw assembling between a plurality of wiring boards of the utility model, mounting or dismounting easily, easily regulate after installing, the bandwidth of the utility model band pass filter moves up and down to regulate trap characteristic according to insulating screw, microstrip line is assembled in after the cavity, bandwidth and trap characteristic are regulated easily, be useful in and require low-loss, the base station of wide band, 2 parts that the utility model consists of microstrip line are dielectric, be with transverse electromagnetic wave (Transverse ElectroMagnetic wave) mode operation, have radiation loss few, miniaturization, advantage cheaply.
Description of drawings:
Fig. 1 is the structural representation of prior art mode of resonance band pass filter.
Fig. 2 is the decomposing schematic representation of the utility model Microstrip Bandpass Filter.
Fig. 3 is the cut-away view of the utility model Microstrip Bandpass Filter.
Embodiment:
Below in conjunction with accompanying drawing the utility model is further described, see shown in Fig. 2～3, Microstrip Bandpass Filter, it includes cavity 205, lid is located at the cover plate 206 on the cavity 205, input connector 201-1 for the signal input and output of Microstrip Bandpass Filter is installed on the cavity 205, output connector 201-2, the input coupling sheet metal 202-1 that is connected with the end of input connector 201-1, the output coupling sheet metal 202-2 that is connected with the end of output connector 201-2, receive coupling sheet metal 202-1, the signal of 202-2 and resonance are to a plurality of wiring board 203-1 of ideal frequency, 203-2,203-3, the insulating screw 204 of adjustable range, wiring board 203-1,203-2,203-3 and coupling sheet metal 202-1, connect by insulating screw 204 between the 202-2.
Wherein, the end of input coupling sheet metal 202-1 is to be inserted in the Kong Lihou that input connector 201-1 forms and to be welded and fixed, and the other end is connected with insulating screw 204 with the first wiring board 203-1 one end.As above, the end of output coupling sheet metal 202-2 also is to be inserted in the Kong Lihou that output connector 201-2 forms and to be welded and fixed, and the other end is connected with insulating screw 204 with tertiary circuit plate 203-3 one end.
And the first wiring board 203-1 and the second wiring board 203-2 and tertiary circuit plate 203-3 are and the setting that is arranged in parallel of output/output coupling sheet metal, because the interval forms resonance between each wiring board 203-1,203-2, the 203-3, obtain different parameters by regulating these intervals.
Wherein, each wiring board 203-1,203-2,203-3 use insulating screw 204 to connect, and move up and down these insulating screws 204 and come distance between the adjusting circuit plate, thereby change bandwidth and the trap characteristic of band pass filter.
Wherein, interval A, tertiary circuit plate 203-3 between the first wiring board 203-1 and the input coupling sheet metal 202-1 and the interval B between the output coupling sheet metal 203-2 determine the bandwidth of band pass filter, insulating screw 204 between shiftable haulage line plate 203-1,203-3 and coupling sheet metal 202-1, the 202-2 is regulated bandwidth, also can be easy to regulate bandwidth after the assembling.
The second wiring board 203-2 and first and tertiary circuit plate 203-1,203-3 between interval C be the trap characteristic that determines bandpass filtering, the insulating screw 204 of mobile link the first wiring board 203-1 and tertiary circuit plate 203-3, regulate the interval between the first wiring board 203-1 and tertiary circuit plate 203-3, allow it have trap characteristic.
Each wiring board 203-1,203-2,203-3 and coupling sheet metal 202-1, the tangible pore-forming of 202-2, these holes insulating screw assembling position that can change up and down.The length of the first wiring board 203-1 and amplitude be with identical with tertiary circuit plate 203-3, and symmetrical with input/output terminal connector 201-1,201-2 benchmark, but these each end sizes may be different.
Namely, the first wiring board 203-1 is connected with coupling sheet metal 202-1,202-2 with the end of tertiary circuit plate 203-3, the other end is connected with the second wiring board 203-2, and the amplitude of each connection line can be consistent, and (the 203-1 front end may be not identical with tertiary circuit plate 203-3 rear end for the first wiring board.
Form microstrip line with non-conducting material insulating screw assembling between a plurality of wiring boards of the utility model, mounting or dismounting easily, easily regulate after installing, the bandwidth of the utility model band pass filter moves up and down to regulate trap characteristic according to insulating screw, microstrip line is assembled in after the cavity, bandwidth and trap characteristic are regulated easily, be useful in the base station that requires low-loss, wide band, 2 parts that the utility model consists of microstrip line are dielectric, be with transverse electromagnetic (TEM)mode operation, have that radiation loss is few, a miniaturization, advantage cheaply.
Certainly, the above only is preferred embodiment of the present utility model, therefore all equivalences of doing according to the described structure of the utility model patent claim, feature and principle change or modify, is included in the utility model patent claim.
Claims (3)
1. Microstrip Bandpass Filter, it is characterized in that: it includes cavity, lid is located at the cover plate on the cavity, the coupling sheet metal, the signal that receives the coupling sheet metal and the resonance that connector for the signal input and output of Microstrip Bandpass Filter are installed on the cavity, pass on the signal that the input/output terminal connector receives is to a plurality of wiring boards of ideal frequency, the insulating screw of adjustable range, and wiring board is connected by insulating screw between the sheet metal with being coupled.
2. Microstrip Bandpass Filter according to claim 1 is characterized in that: described wiring board and the setting that is arranged in parallel between the sheet metal that is coupled.
3. Microstrip Bandpass Filter according to claim 1, it is characterized in that: an end and the connector of described coupling sheet metal are welded and fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220207066 CN202651322U (en) | 2012-05-08 | 2012-05-08 | Microstrip line band pass filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220207066 CN202651322U (en) | 2012-05-08 | 2012-05-08 | Microstrip line band pass filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202651322U true CN202651322U (en) | 2013-01-02 |
Family
ID=47420376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220207066 Expired - Lifetime CN202651322U (en) | 2012-05-08 | 2012-05-08 | Microstrip line band pass filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202651322U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105051972A (en) * | 2013-03-01 | 2015-11-11 | 日本电气株式会社 | Pole band-pass filter |
| CN113671222A (en) * | 2021-08-17 | 2021-11-19 | 深圳市精泰达科技有限公司 | Filtering module with high shielding performance and corresponding shielding box thereof |
-
2012
- 2012-05-08 CN CN 201220207066 patent/CN202651322U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105051972A (en) * | 2013-03-01 | 2015-11-11 | 日本电气株式会社 | Pole band-pass filter |
| US10033075B2 (en) | 2013-03-01 | 2018-07-24 | Nec Corporation | Cross coupled band-pass filter |
| CN113671222A (en) * | 2021-08-17 | 2021-11-19 | 深圳市精泰达科技有限公司 | Filtering module with high shielding performance and corresponding shielding box thereof |
| CN113671222B (en) * | 2021-08-17 | 2022-04-22 | 深圳市精泰达科技有限公司 | Filtering module with high shielding performance and corresponding shielding box thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130102 |
|
| CX01 | Expiry of patent term |