CN101924263B - Cavity filter - Google Patents
Cavity filter Download PDFInfo
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- CN101924263B CN101924263B CN200910147650.8A CN200910147650A CN101924263B CN 101924263 B CN101924263 B CN 101924263B CN 200910147650 A CN200910147650 A CN 200910147650A CN 101924263 B CN101924263 B CN 101924263B
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- cavity
- transmission channel
- receive path
- body filter
- cavity body
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Abstract
The invention relates to the technical field of micro communication, in particular to a cavity filter. The cavity filter comprises a cavity body, and the cavity body is provided with a plurality of cavities. A plurality of cavities form a transmitting channel and a receiving channel respectively, and the transmitting channel and the receiving channel comprise at least one shared cavity. The transmitting channel and the receiving channel of the cavity filter share at least one cavity, thus reducing the size of the cavity filter and being beneficial to miniaturization and integration of the cavity filter.
Description
Technical field
The present invention relates to technical field of micro communication, relate in particular to a kind of cavity body filter.
background technology
Filter is widely used in the communications field as a kind of frequency selection device, especially field of radio frequency communication.In the base station transmitting and receiving at communication system settling signal, filter is used to select signal of communication, the clutter outside filtering communication signal frequency or interference signal.
At present, in mobile communication base station system, generally with cavity body filter, the signal of antenna transmission and reception is carried out to frequency selection.Use traditional cavity body filter to transmit and receive signal of communication, this signal of communication is all transmission channel and receive path transmission respectively.This design that transmission channel and receive path are independently arranged, is conducive to cavity arranged distribution.Yet just practical in the situation that the design that this transmission channel and receive path independently arrange being only enough in space, in the situation that narrow space is limited, the cavity body filter of making according to above-mentioned design will be difficult to meet the requirements of signal transmission.
summary of the invention
In view of this, the invention provides the cavity body filter that a kind of size is less.
Cavity body filter comprises a cavity, and described cavity is provided with a plurality of cavitys, and described a plurality of cavitys form respectively transmission channel and receive path, and described transmission channel and described receive path at least comprise a shared cavity.
In above-mentioned cavity body filter, described receive path comprises 7 cavitys, and described transmission channel comprises 8 cavitys, and described transmission channel and receive path share two cavitys.
In above-mentioned cavity body filter, described transmission channel two ends are respectively transmitting terminal and antenna end, described receive path two ends are respectively receiving terminal and antenna end, and described receiving terminal, transmitting terminal and antenna end, also can be in the same sides in the same side of described cavity body filter.
In above-mentioned cavity body filter, one end of described shared cavity is antenna end, and the other end is communicated with respectively described transmission channel and described receive path.
In above-mentioned cavity body filter, described transmission channel and described receive path share two cavitys, make the number of cavities altogether needing on the cavity of whole cavity body filter than the cavity body filter that adopts transmission channel and receive path independently to arrange, reduced the setting of two cavitys, make the size of described cavity body filter less, be conducive to the miniaturization of described cavity body filter and integrated.Simultaneously, described transmission channel and described receive path also share described antenna end, make whole cavity body filter be provided with less a described antenna end, not only saved the interface unit that is arranged at antenna end, also greatly reduced the size of described cavity body filter simultaneously.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the cavity body filter of a better embodiment.
Embodiment
The present embodiment provides a kind of cavity body filter, and this cavity body filter comprises cavity.Described cavity is provided with a plurality of cavitys, and described a plurality of cavitys form respectively transmission channel and receive path, and described transmission channel and described receive path at least comprise a shared cavity.Described shared cavity can reduce the cavity sum that transmission channel or receive path comprise.
In order to describe described cavity body filter in detail, below in conjunction with Figure of description 1, further illustrate.
As shown in Figure 1, it is the schematic diagram of the cavity body filter of a better embodiment.This cavity body filter 100 comprises cavity 110.Described cavity 100 is provided with 15 cavitys, described cavity be respectively form transmission channel 120 cavity 1, cavity 2, cavity 3 to cavity 9, form the cavity 1, cavity 2, cavity 10 of receive path 130 to cavity 15.Described transmission channel 120 and described receive path 130 share described cavity 1 and described cavity 2.
The two ends of described transmission channel 120 are respectively antenna end 111 and transmitting terminal 121, and the two ends of described receive path are respectively antenna end 111 and receiving terminal 131.Described transmission channel 120 and described receive path 130 share described antenna end 111.Coexist the same side of described cavity body filter 100 of described antenna end 111, transmitting terminal 121 and receiving terminal 131, in other embodiments, described antenna end 111, transmitting terminal 121 and receiving terminal 131 also can be at the not ipsilaterals of described cavity body filter 100.
In above-mentioned cavity body filter 100, described transmission channel 120 and described receive path 130 share described cavity 1 and described cavity 2, making the number of cavities altogether needing on the cavity 110 of whole cavity body filter 100 is 15, it is than adopting transmission channel 120 and the independent cavity body filter arranging of receive path 130, reduced the setting of two cavitys, make the size of described cavity body filter 100 less, be conducive to the miniaturization of described cavity body filter 100 and integrated.Simultaneously, described transmission channel 120 and described receive path 130 also share described antenna end 111, make whole cavity body filter 100 be provided with less a described antenna end 111, not only save the interface unit that is arranged at antenna end 111, also greatly reduced the size of described cavity body filter 100 simultaneously.
Claims (1)
1. a cavity body filter, comprise cavity, described cavity is provided with a plurality of cavitys, described a plurality of cavity forms respectively transmission channel and receive path, it is characterized in that: described receive path comprises 7 cavitys, described transmission channel comprises 8 cavitys, and described transmission channel and receive path share two cavitys; Described transmission channel two ends are respectively transmitting terminal and antenna end, and described receive path two ends are respectively receiving terminal and antenna end, and described receiving terminal, transmitting terminal and antenna end, also can be in the same sides in the same side of described cavity body filter; One end of described shared cavity is antenna end, and the other end is communicated with respectively described transmission channel and described receive path.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910147650.8A CN101924263B (en) | 2009-06-11 | 2009-06-11 | Cavity filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910147650.8A CN101924263B (en) | 2009-06-11 | 2009-06-11 | Cavity filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101924263A CN101924263A (en) | 2010-12-22 |
| CN101924263B true CN101924263B (en) | 2014-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910147650.8A Active CN101924263B (en) | 2009-06-11 | 2009-06-11 | Cavity filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101924263B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102136617A (en) * | 2010-12-31 | 2011-07-27 | 深圳市大富科技股份有限公司 | Cavity filter, signal processing module and communication equipment |
| CN113054369A (en) * | 2019-12-27 | 2021-06-29 | 深圳市大富科技股份有限公司 | Filter and communication equipment |
| CN113054381A (en) * | 2019-12-27 | 2021-06-29 | 深圳市大富科技股份有限公司 | Communication device and filter thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2618308Y (en) * | 2003-04-07 | 2004-05-26 | 深圳市泰士达科技有限公司 | Multiple frequency merger for mobile communication |
| 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 |
| CN201118870Y (en) * | 2007-09-11 | 2008-09-17 | 镇江新区澳华测控技术有限公司 | Multi-channel RF password matrix structure |
-
2009
- 2009-06-11 CN CN200910147650.8A patent/CN101924263B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2618308Y (en) * | 2003-04-07 | 2004-05-26 | 深圳市泰士达科技有限公司 | Multiple frequency merger for mobile communication |
| 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 |
| CN201118870Y (en) * | 2007-09-11 | 2008-09-17 | 镇江新区澳华测控技术有限公司 | Multi-channel RF password matrix structure |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101924263A (en) | 2010-12-22 |
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Address after: 518104, Guangdong, Shenzhen province Baoan District manhole Street oyster road manhole Industrial Company Third Industrial Zone A1, A2, A3 101 and 2 layers, A4 Applicant after: Shenzhen Tat Fook Technology Co., Ltd. Address before: 518108 Bao'an District, Shenzhen City, Guangdong Province, Shiyan Town, love group with the rich industrial area A \ B Dong Applicant before: Shenzhen Tat Fook Technology Co., Ltd. |
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Address after: 233000 building 4, national financial incubation Industrial Park, 17 Yannan Road, high tech Zone, Bengbu City, Anhui Province Patentee after: Dafu Technology (Anhui) Co., Ltd Address before: 518104, Guangdong, Shenzhen province Baoan District manhole Street oyster road manhole Industrial Company Third Industrial Zone A1, A2, A3 101 and 2 layers, A4 Patentee before: SHENZHEN TATFOOK TECHNOLOGY Co.,Ltd. |
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