CN104157940A - Low-loss high-intermodulation 4G filter - Google Patents
Low-loss high-intermodulation 4G filter Download PDFInfo
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- CN104157940A CN104157940A CN201410389945.7A CN201410389945A CN104157940A CN 104157940 A CN104157940 A CN 104157940A CN 201410389945 A CN201410389945 A CN 201410389945A CN 104157940 A CN104157940 A CN 104157940A
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- resonant cavity
- kfd
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- signal input
- filter
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Abstract
The invention discloses a low-loss high-intermodulation 4G filter. The filter comprises a resonant cavity, wherein a silver layer is electroplated in the resonant cavity, five high-power tuning capacitors coupled in a window opening manner and a control element for out-of-band spurious signals are arranged in the resonant cavity, the five high-power tuning capacitors are arranged in two lines, the two uplink capacitors are located right above the three downlink capacitors, a signal input line and a signal output line are connected onto the two high-power tuning capacitors located on the leftmost and rightmost sides respectively, a signal input port SMA-KFD connector and a signal output port SMA-KFD connector are arranged on left and right sides of the resonant cavity respectively, the signal input line and the signal output line are connected with the signal input port SMA-KFD connector and the signal output port SMA-KFD connector respectively, and a cover plate is fixed on the resonant cavity. The filter has the advantages of low loss, small external dimension, attractive design, smoothness in signal transmission, convenience in mounting and maintenance and the like.
Description
Technical field
The present invention relates to wave filter technology field, relate in particular to the high intermodulation 4G of a kind of low-loss filter.
Background technology
Existing 4G filter overall dimension is large, indoor design complexity, and loss is large, processing difficulties, the slow capacity of debugging speed is little, designs not attractive in appearancely, and signal transmission is obstructed, and therefore installation and maintenance inconvenience needs the 4G filter of the high intermodulation of a kind of low-loss.
Summary of the invention
The object of the invention is exactly the defect in order to make up prior art, and the high intermodulation 4G of a kind of low-loss filter is provided.
The present invention is achieved by the following technical solutions:
The high intermodulation 4G of a kind of low-loss filter, include resonant cavity, in resonant cavity, electroplate silver layer, in resonant cavity, be provided with five and adopt high-power tuning capacitance that windowing modes are coupled and the control element of a band stray signal, five described high-power tuning capacitances divide two row to arrange, up two be positioned at descending three directly over, be positioned on two high-power tuning capacitances of the leftmost side and the rightmost side and be connected with respectively signal input line and output line, be respectively equipped with signal input port SMA-KFD connector and signal output port SMA-KFD connector at the left and right sides of resonant cavity, described signal input line is connected with signal input port SMA-KFD connector and signal output port SMA-KFD connector respectively with output line, on resonant cavity, be fixed with cover plate.
Electroplate silver layer in described lid surface.
Resonant cavity is mainly used to transmit the signal and the every needed technical indicator of product that between each frequency, produce, is a kind of microwave transmission line, and the electric energy producing while powering up work and magnetic energy are stored at inside, chamber.
Advantage of the present invention is: the present invention is mainly used in gsm system receiving and transmitting signal filtering device in mobile communication 4G network, can realize simultaneously will extensive use gsm system signal transmitting and receiving, not only can work as single filtration module and use but also can work as duplexer and use, and have that loss is little, overall dimensions are little, be designed beautifully, the special defeated plurality of advantages such as unobstructed, convenient for installation and maintenance of signal.
Brief description of the drawings
Fig. 1 is structural representation of the present invention.
Fig. 2 is covering plate structure schematic diagram.
Embodiment
As Fig. 1, shown in 2, the high intermodulation 4G of a kind of low-loss filter, include resonant cavity 1, the interior plating silver layer of resonant cavity 1, in resonant cavity 1, be provided with five and adopt high-power tuning capacitance 2 that windowing modes are coupled and the control element 3 of a band stray signal, described 2 point of two row of five high-power tuning capacitances arranged, up two be positioned at descending three directly over, be positioned on two high-power tuning capacitances 2 of the leftmost side and the rightmost side and be connected with respectively signal input line 4 and output line 5, be respectively equipped with signal input port SMA-KFD connector 6 and signal output port SMA-KFD connector 7 at the left and right sides of resonant cavity 1, described signal input line 4 is connected with signal input port SMA-KFD connector 6 and signal output port SMA-KFD connector 7 respectively with output line 5, on resonant cavity 1, be fixed with cover plate 8.
At described cover plate 8 electroplating surface silver layers.
Claims (2)
1. the high intermodulation 4G of a low-loss filter, it is characterized in that: include resonant cavity, in resonant cavity, electroplate silver layer, in resonant cavity, be provided with five and adopt high-power tuning capacitance that windowing modes are coupled and the control element of a band stray signal, five described high-power tuning capacitances divide two row to arrange, up two be positioned at descending three directly over, be positioned on two high-power tuning capacitances of the leftmost side and the rightmost side and be connected with respectively signal input line and output line, be respectively equipped with signal input port SMA-KFD connector and signal output port SMA-KFD connector at the left and right sides of resonant cavity, described signal input line is connected with signal input port SMA-KFD connector and signal output port SMA-KFD connector respectively with output line, on resonant cavity, be fixed with cover plate.
2. the high intermodulation 4G of low-loss according to claim 1 filter, is characterized in that: electroplate silver layer in described lid surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410389945.7A CN104157940A (en) | 2014-08-08 | 2014-08-08 | Low-loss high-intermodulation 4G filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410389945.7A CN104157940A (en) | 2014-08-08 | 2014-08-08 | Low-loss high-intermodulation 4G filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104157940A true CN104157940A (en) | 2014-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410389945.7A Pending CN104157940A (en) | 2014-08-08 | 2014-08-08 | Low-loss high-intermodulation 4G filter |
Country Status (1)
| Country | Link |
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| CN (1) | CN104157940A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112544012A (en) * | 2019-07-23 | 2021-03-23 | 深圳市大富科技股份有限公司 | Filter, communication and radio frequency remote equipment, transceiver and tower top amplifier |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200965904Y (en) * | 2006-04-20 | 2007-10-24 | 陕西微康姆通信技术有限公司 | A super-high frequency coaxial resonant cavity type receiving and transmitting duplexer |
| CN101867076A (en) * | 2010-06-11 | 2010-10-20 | 安徽科瑞达通信科技有限公司 | GSM high-power duplex filter |
| US20120313732A1 (en) * | 2011-05-25 | 2012-12-13 | Universal Microwave Technology, Inc. | Cavity filter with high flatness feedback |
| CN204118222U (en) * | 2014-08-08 | 2015-01-21 | 董后友 | Low-loss height intermodulation 4G filter |
-
2014
- 2014-08-08 CN CN201410389945.7A patent/CN104157940A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200965904Y (en) * | 2006-04-20 | 2007-10-24 | 陕西微康姆通信技术有限公司 | A super-high frequency coaxial resonant cavity type receiving and transmitting duplexer |
| CN101867076A (en) * | 2010-06-11 | 2010-10-20 | 安徽科瑞达通信科技有限公司 | GSM high-power duplex filter |
| US20120313732A1 (en) * | 2011-05-25 | 2012-12-13 | Universal Microwave Technology, Inc. | Cavity filter with high flatness feedback |
| CN204118222U (en) * | 2014-08-08 | 2015-01-21 | 董后友 | Low-loss height intermodulation 4G filter |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112544012A (en) * | 2019-07-23 | 2021-03-23 | 深圳市大富科技股份有限公司 | Filter, communication and radio frequency remote equipment, transceiver and tower top amplifier |
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| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141119 |
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| RJ01 | Rejection of invention patent application after publication |