CN101924263A - Cavity filter - Google Patents
Cavity filter Download PDFInfo
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- CN101924263A CN101924263A CN 200910147650 CN200910147650A CN101924263A CN 101924263 A CN101924263 A CN 101924263A CN 200910147650 CN200910147650 CN 200910147650 CN 200910147650 A CN200910147650 A CN 200910147650A CN 101924263 A CN101924263 A CN 101924263A
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- cavity
- body filter
- transmission channel
- cavity body
- receive path
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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.Finish in the base station that signal transmits and receives in communication system, filter is used to select signal of communication, clutter or interference signal that the filtering communication signal frequency is outer.
At present, in mobile communication base station system, the signal that generally uses cavity body filter to come antenna is transmitted and received carries out the 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 independently are provided with helps the cavity arranged distribution.Yet the design that this transmission channel and receive path independently are provided with is only just practical under the enough situation in space, and under the narrow and small condition of limited in space, the cavity body filter of making according to above-mentioned design will be difficult to satisfy every requirement of signal transmission.
Summary of the invention
In view of this, the invention provides the littler cavity body filter of a kind of size.
A kind of cavity body filter comprises cavity, and described cavity is provided with a plurality of cavitys, and described a plurality of cavitys form transmission channel and receive path respectively, and described transmission channel and described receive path comprise a shared cavity at least.
In the above-mentioned cavity body filter, described receive path comprises 7 cavitys, and described transmission channel comprises 8 cavitys, shared two cavitys of described transmission channel and receive path.
In the 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 the above-mentioned cavity body filter, an end of described shared cavity is an antenna end, and the other end is communicated with described transmission channel and described receive path respectively.
In the above-mentioned cavity body filter, shared two cavitys of described transmission channel and described receive path, make the number of cavities that needs altogether on the cavity of whole cavity body filter than the cavity body filter that adopts transmission channel and receive path independently to be provided with, reduced the setting of two cavitys, make the size of described cavity body filter littler, help the miniaturization of described cavity body filter and integrated.Simultaneously, the also shared described antenna end of described transmission channel and described receive path, make whole cavity body filter be provided with a described antenna end less, not only saved the interface unit that is arranged at antenna end, also greatly reduced the size of described cavity body filter simultaneously.
Description of drawings
Fig. 1 is the schematic diagram of the cavity body filter of a better embodiment.
Embodiment
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 transmission channel and receive path respectively, and described transmission channel and described receive path comprise a shared cavity at least.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, further specify below in conjunction with Figure of description 1.
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, and described cavity is respectively the cavity 1 that constitutes transmission channel 120, cavity 2, cavity 3 to cavity 9, and the cavity 1, cavity 2, cavity 10 that constitute receive path 130 are to cavity 15.Described transmission channel 120 and described receive path 130 shared described cavity 1 and described cavitys 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 shared 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 the above-mentioned cavity body filter 100, described transmission channel 120 and described receive path 130 shared described cavity 1 and described cavitys 2, making the number of cavities that needs altogether on the cavity 110 of whole cavity body filter 100 is 15, it is than adopting transmission channel 120 and the receive path 130 independent cavity body filters that are provided with, reduced the setting of two cavitys, make the size of described cavity body filter 100 littler, help the miniaturization of described cavity body filter 100 and integrated.Simultaneously, the also shared described antenna end 111 of described transmission channel 120 and described receive path 130, make whole cavity body filter 100 be provided with a described antenna end 111 less, 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 (4)
1. a cavity body filter comprises cavity, and described cavity is provided with a plurality of cavitys, and described a plurality of cavitys form transmission channel and receive path respectively, it is characterized in that: described transmission channel and described receive path comprise a shared cavity at least.
2. cavity body filter as claimed in claim 1 is characterized in that: described receive path comprises 7 cavitys, and described transmission channel comprises 8 cavitys, shared two cavitys of described transmission channel and receive path.
3. cavity body filter as claimed in claim 1, it is characterized in that: described transmission channel two ends are respectively transmitting terminal and antenna end, described receive path two ends are respectively receiving terminal and antenna end, described receiving terminal, transmitting terminal and antenna end also can be in the same sides in the same side of described cavity body filter.
4. cavity body filter as claimed in claim 3 is characterized in that: an end of described shared cavity is an antenna end, and the other end is communicated with described transmission channel and described receive path respectively.
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 true CN101924263A (en) | 2010-12-22 |
| CN101924263B CN101924263B (en) | 2014-04-09 |
Family
ID=43339014
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) |
Cited By (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 |
Family Cites Families (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
Cited By (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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101924263B (en) | 2014-04-09 |
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| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
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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| C14 | Grant of patent or utility model | ||
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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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| CP03 | Change of name, title or address |