CN101958443A - Duplex filter - Google Patents
Duplex filter Download PDFInfo
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- CN101958443A CN101958443A CN2010105232609A CN201010523260A CN101958443A CN 101958443 A CN101958443 A CN 101958443A CN 2010105232609 A CN2010105232609 A CN 2010105232609A CN 201010523260 A CN201010523260 A CN 201010523260A CN 101958443 A CN101958443 A CN 101958443A
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- resonator
- cavity
- filter
- connector
- cover plate
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Abstract
The invention discloses a duplex filter, comprising an input end, an output end, a cavity body, a cover plate, a tuning screw rod, a resonator and a connector. The duplex filter is characterized in that the resonator comprises a plurality of horizontally installed resonators and two vertically installed resonators; the resonator is integrally installed at the bottom of the cavity body; the tuning screw rod is installed on the cover plate by bolts; and the connector is integrally installed in the external side of the cavity body. The duplex filter simplifies the manufacturing technique of the filter by vertically loading the resonator and integrally manufacturing means; the duplex filter has the advantages of small manufacturing difficulty and stable performance.
Description
Technical field
The present invention relates to electronic technology field, be specifically related to a kind of duplexer filter.
Background technology
Diplexer filter is more special two-way three end filters, faint acknowledge(ment) signal lotus root should be closed into, again will bigger transmitting power be fed to antenna and gets on, and require both to finish its function separately and do not influence each other.General duplexer is often made a sealing body, and cavity shape material also requires certain fineness, heat radiation for the benefit of, and outward appearance often is a black.General duplexer is made up of six stop-band filters (trapper), and each resonance is in transmitting and receiving frequency, and the receiving terminal filter resonance is in tranmitting frequency, and prevents that transmitting power from sealing in receiver, and the transmitting terminal filter resonance is in receive frequency.Number of resonators in the channel isolation of common filter and the filter be provided with relevant, quantity is many more, the channel isolation of filter is just high more, but because the restriction of bandwidth, the setting of general available channel is limited, for the channel isolation quality of having relatively high expectations, just need more resonator, but so just increased the insertion loss (insert that loss refers in the somewhere of transmission system because the loss of the bearing power that the insertion of element or device takes place, it is expressed as this element or device insert before in the load received power with insert after in the same load received power be the ratio of unit with the decibel).Usually the requirement for duplexer is embodied in 2 points: at first, volume is small and exquisite, in light weight; Secondly, duplexer must be convenient to install.But general filter all is that internal structure is processed respectively, and recombinant is installed, complex process, and more resonator is installed also can't be realized above-mentioned technical goal.Therefore we just need be a kind of under the prerequisite that guarantees properties of product, and technology is simple proposal more.
Summary of the invention
In order to realize above-mentioned technical purpose, the invention discloses a kind of duplexer filter, comprise input, output, cavity, cover plate, tuning screw rod, resonator, connector, it is characterized in that: described resonator is included in a plurality of resonators of horizontally set and the resonator of two longitudinal directions is formed; Described resonator adopts integral type processing to be arranged on described cavity bottom, and described tuning screw rod is arranged on the described cover plate by bolt; Described connector adopts integrated type processing in the cavity outside.
Further technical scheme also comprises:
Described vertical resonator is made as the adjustable notch filter resonator.
Described resonator adopts ceramic resonance bar device or quartz-crystal resonator.
Described filter comprises the cavity more than four.
The present invention takes resonator, the incorporate design of connector resonant cavity body, simple and easy manufacturing installation technology.The design that adds vertical adjustable notch filter device on the basis of a plurality of resonators is set in the lateral attitude, and the interference signal that can further decay improves communication quality.Can reach the technical goal that volume reduces, is convenient to install.With respect to common filter, it is less that the present invention has difficulty of processing, the advantage of stable performance.
Description of drawings
Fig. 1 is a cavity body structure internal structure schematic diagram;
Fig. 2 is a structural representation of the present invention.
Embodiment
For the design and the design idea of further clear and definite this programme, the present invention is further introduced below in conjunction with drawings and the specific embodiments.
As shown in the figure, a kind of duplexer filter comprises input, output, cavity 1, cover plate 2, tuning screw rod 5, resonator, connector.Three resonators 3 of cavity horizontally set, two adjustable notch filter resonators 4 vertically are set, resonator 3 adopts integral type processing to be arranged on described cavity 1 bottom, and tuning screw rod 5 is arranged on the described cover plate 2 by bolt, and described connector 6 adopts integrated type processing in cavity 1 outside.Vertically resonator 4 is made as the adjustable notch filter resonator.Described resonator adopts ceramic resonance bar device.
Below disclose the present invention with preferred embodiment, so it is not in order to restriction the present invention, and all employings are equal to replaces or technical scheme that the equivalent transformation mode is obtained, all drops within protection scope of the present invention.
Claims (4)
1. duplexer filter, comprise input, output, cavity (1), cover plate (2), tuning screw rod (5), resonator, connector (6), it is characterized in that: described resonator is included in a plurality of resonators (3) of horizontally set and the resonator (4) of two longitudinal directions is formed; Described resonator (3) adopts integral type processing to be arranged on described cavity (1) bottom, and described tuning screw rod (5) is arranged on the described cover plate (2) by bolt; Described connector (6) adopts integrated type processing in cavity (1) outside.
2. a kind of duplexer filter according to claim 1 is characterized in that: described vertical resonator (4) is made as the adjustable notch filter resonator.
3. a kind of duplexer filter according to claim 1 and 2 is characterized in that: described resonator adopts ceramic resonator or quartz-crystal resonator.
4. a kind of duplexer filter according to claim 1 and 2 is characterized in that: described filter comprises the cavity more than four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105232609A CN101958443A (en) | 2010-10-28 | 2010-10-28 | Duplex filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105232609A CN101958443A (en) | 2010-10-28 | 2010-10-28 | Duplex filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101958443A true CN101958443A (en) | 2011-01-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105232609A Pending CN101958443A (en) | 2010-10-28 | 2010-10-28 | Duplex filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101958443A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111537802A (en) * | 2020-05-25 | 2020-08-14 | 上海交通大学 | Method for rapidly extracting liquid conductivity parameters |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201039098Y (en) * | 2007-03-20 | 2008-03-19 | 盛晔 | Duplex filter |
| CN201499383U (en) * | 2009-08-26 | 2010-06-02 | 深圳国人通信有限公司 | Network optimization equipment case of integrated high-selective multi-frequency reuse duplexer |
| CN201576730U (en) * | 2009-06-02 | 2010-09-08 | 深圳市大富科技股份有限公司 | Integral-type cavity filter |
| CN201616497U (en) * | 2009-11-25 | 2010-10-27 | 沈昕 | Cavity filter |
| CN201829594U (en) * | 2010-10-28 | 2011-05-11 | 昆山锦泰电子器材有限公司 | Duplexing filter |
-
2010
- 2010-10-28 CN CN2010105232609A patent/CN101958443A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201039098Y (en) * | 2007-03-20 | 2008-03-19 | 盛晔 | Duplex filter |
| CN201576730U (en) * | 2009-06-02 | 2010-09-08 | 深圳市大富科技股份有限公司 | Integral-type cavity filter |
| CN201499383U (en) * | 2009-08-26 | 2010-06-02 | 深圳国人通信有限公司 | Network optimization equipment case of integrated high-selective multi-frequency reuse duplexer |
| CN201616497U (en) * | 2009-11-25 | 2010-10-27 | 沈昕 | Cavity filter |
| CN201829594U (en) * | 2010-10-28 | 2011-05-11 | 昆山锦泰电子器材有限公司 | Duplexing filter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111537802A (en) * | 2020-05-25 | 2020-08-14 | 上海交通大学 | Method for rapidly extracting liquid conductivity parameters |
| CN111537802B (en) * | 2020-05-25 | 2021-05-28 | 上海交通大学 | Method for rapidly extracting liquid conductivity parameters |
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Application publication date: 20110126 |