CN103545581A - Multi-channel public cavity filtering multiplexer - Google Patents
Multi-channel public cavity filtering multiplexer Download PDFInfo
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- CN103545581A CN103545581A CN201310505753.3A CN201310505753A CN103545581A CN 103545581 A CN103545581 A CN 103545581A CN 201310505753 A CN201310505753 A CN 201310505753A CN 103545581 A CN103545581 A CN 103545581A
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Abstract
The invention relates to a multi-channel public cavity filtering multiplexer. The multi-channel public cavity filtering multiplexer comprises a body, wherein a resonant cavity is formed in one face of the body, and a resonator is arranged in the resonant cavity. The resonant cavity comprises a public cavity and first cavities of all filters, wherein the first cavities of all the filters are located on the periphery of the public cavity to form an approximate-semicircular shape, and the public cavity is communicated with the first cavities of all the filters. An output terminal is arranged on the side wall, close to the public cavity, of the body, and the output terminal penetrates through the side wall of the body and is then connected with the resonator in the public cavity. The multi-channel public cavity filtering multiplexer is characterized in that the cross section of the public cavity is in a regular polygon shape, and the number of sides of the regular polygon is larger than four. The multi-channel public cavity filtering multiplexer is wide in application range. Device investment and use cost can be reduced due to the adoption of the multi-channel public cavity filtering multiplexer.
Description
Technical field
The present invention relates to a kind of filter.Specifically, be the multiplexer that a plurality of filters share a common cavity input, be applicable on the communication apparatus of wireless base station.
Background technology
In field of wireless communication, the third generation, the 4th generation wireless communication technique high speed development, brought the infinite commercial opportunities of data, picture and video communication to mobile phone and other hand-hold electronic equipments.Each main international region is (as America, Europe, Japan etc.) there are a plurality of transmission bands to apply, the for example GSM of the second generation and CDMA, the WCDEMA of the third generation and EVDD, the LET in the 4th generation etc., these different systems, the radio-frequency (RF) signal of different transmission frequencies and energy are to be mostly responsible for receiving and transmitting by one group or two groups of antennas, the distribution of different frequency range signal needs low differential loss with combination, high-isolation, low intermodulation, and rf frequency and the bandwidth of global various countries and area use are not quite similar again, therefore, filter and the mixer that can cover multiband work just arise at the historic moment.At present, filter and the mixer that can cover multiband work mainly contain following two kinds, a kind of the first chamber by a plurality of each path filters form and the first chamber of each path filter in the non-common cavity multiplexer that is connected with lead-out terminal again after connecting by wire of resonator, another kind is by a common cavity, is looped around that resonator in first chamber of the first chamber, common cavity and each path filter of each path filter in common cavity semicircular and the resonator in common cavity are connected with lead-out terminal and the multiplexer that forms, and common cavity is wherein square.Because the resonator of front a kind of non-common cavity multiplexer connects to be coupled by wire, not only be difficult to obtain higher input stiffness of coupling, and larger to each interchannel mutual isolation effect, make the input stiffness of coupling of this non-common cavity multiplexer not high, and the input stiffness of coupling that broadband needs is higher, therefore above-mentionedly morely close path filter and only can be used in narrow-band situation, can not be used in broadband situation, the scope of application is restricted.Because the common cavity of rear a kind of multiplexer is square, make its passage only have four, the communications band covering is less, makes a set of communication equipment need many multiplexers to work simultaneously and could realize all standing of whole communications band, thereby greatly increased equipment investment and use cost.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of multichannel common cavity filtering multiplexer.This multichannel common cavity filtering multiplexer, the scope of application is wide.Adopt this multichannel common cavity filtering multiplexer, can reduce equipment investment, reduce use cost.
For addressing the above problem, take technical scheme:
Multichannel common cavity filtering multiplexer of the present invention comprises body, and the one side of described body has resonant cavity, has resonator in resonant cavity.The first chamber that described resonant cavity contains common cavity and each path filter, in the surrounding semicircular of the first chamber of described each path filter in described common cavity, and described common cavity is all communicated with the first chamber of described each path filter.On the body sidewall of contiguous common cavity, have lead-out terminal, described lead-out terminal is connected with the resonator in common cavity through after body sidewall; The cross section that it is characterized in that described common cavity is that the limit number of regular polygon and regular polygon is greater than four.
Take such scheme, have the following advantages:
As can be seen from the above scheme, the limit number that is regular polygon and regular polygon due to the cross section of described common cavity is greater than four, according to the required frequency range of communication equipment, can increase arbitrarily the limit number of common cavity cross section, to realize all standing of whole communications band, the present invention can be used in narrow-band situation, can be used in broadband situation again, the scope of application is unrestricted.
The limit number that is regular polygon and regular polygon due to the cross section of described common cavity is again greater than four, according to the required frequency range of communication equipment, by increasing the limit number of the first chamber cross section of each path filter, can realize all standing of whole communications band, make a set of communication equipment only need a multiplexer just can realize all standing of whole communications band, thereby greatly reduced equipment investment, reduced use cost.
Accompanying drawing explanation
Fig. 1 is multichannel common cavity filtering multiplexer structural representation of the present invention.
Embodiment
As shown in Figure 1, multichannel common cavity filtering multiplexer of the present invention comprises body 1, and described body 1 is tabular, in the one side of body 1, is processed with resonant cavity, is provided with resonator 2 in each resonant cavity.The first chamber 5 that described resonant cavity contains common cavity 4 and each path filter, in the surrounding semicircular of the first chamber 5 of described each path filter in described common cavity 4, and described common cavity 4 is all communicated with the first chamber 5 of described each path filter.On body 1 sidewall of contiguous common cavity 4, lead-out terminal 3 is installed, described lead-out terminal 3 is connected with the resonator 2 in common cavity 4 through after body 1 sidewall.The limit number that the cross section in the first chamber 5 of the cross section of described common cavity 4 and each path filter is regular polygon and regular polygon is greater than four.In the present embodiment, the cross section in the first chamber 5 of the cross section of described common cavity 4 and each path filter is regular hexagon, and making the present invention is Five-channel common cavity filtering multiplexer altogether.If the cross section in the first chamber 5 of the cross section of described common cavity 4 and each path filter is positive heptagon, be six passages common cavity filtering multiplexers altogether.The like, the number of channels of common common cavity filtering multiplexer that can be is as required determined the limit number of the cross section in the cross section of described common cavity 4 and the first chamber 5 of each path filter.In the present embodiment, the cross section in the first chamber 5 of the cross section of described common cavity 4 and each path filter is regular hexagon, and the multichannel common cavity filtering multiplexer making is Five-channel.
Claims (2)
1. multichannel common cavity filtering multiplexer, comprises body (1), and the one side of described body (1) has resonant cavity, has resonator (2) in resonant cavity; The first chamber (5) that described resonant cavity contains common cavity (4) and each path filter, in the surrounding semicircular of first chamber (5) of described each path filter in described common cavity (4), and described common cavity (4) is all communicated with first chamber (5) of described each path filter; On body (1) sidewall of contiguous common cavity (4), have lead-out terminal (3), described lead-out terminal (3) is through being connected with the resonator (2) in common cavity (4) after body (1) sidewall; The cross section that it is characterized in that described common cavity (4) is that the limit number of regular polygon and regular polygon is greater than four.
2. multichannel common cavity filtering multiplexer as claimed in claim 1, the cross section that it is characterized in that described common cavity (4) is regular hexagon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310505753.3A CN103545581A (en) | 2013-10-24 | 2013-10-24 | Multi-channel public cavity filtering multiplexer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310505753.3A CN103545581A (en) | 2013-10-24 | 2013-10-24 | Multi-channel public cavity filtering multiplexer |
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| Publication Number | Publication Date |
|---|---|
| CN103545581A true CN103545581A (en) | 2014-01-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310505753.3A Pending CN103545581A (en) | 2013-10-24 | 2013-10-24 | Multi-channel public cavity filtering multiplexer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106785275A (en) * | 2017-02-17 | 2017-05-31 | 京信通信系统（中国）有限公司 | Double-deck chamber combiner and its public port device |
| CN113054349A (en) * | 2019-12-27 | 2021-06-29 | 深圳市大富科技股份有限公司 | Communication device and filter |
| CN113851802A (en) * | 2020-06-28 | 2021-12-28 | 大富科技(安徽)股份有限公司 | Filter and communication equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2306792A (en) * | 1995-10-18 | 1997-05-07 | Filtronic Ltd | Microwave multiplexer |
| CN200986960Y (en) * | 2006-12-12 | 2007-12-05 | 摩比天线技术（深圳）有限公司 | Coupled structure between filter and common terminal port and duplex device using the same |
| CN101533940A (en) * | 2009-03-25 | 2009-09-16 | 中国航天科技集团公司第五研究院第五〇四研究所 | Public chamber input multiplexer |
| CN201966309U (en) * | 2011-03-09 | 2011-09-07 | 成都赛纳赛德科技有限公司 | Compact-type band-resistance filter |
| CN203553310U (en) * | 2013-10-24 | 2014-04-16 | 江苏贝孚德通讯科技股份有限公司 | A multi-channel shared-cavity filtering multiplexer |
-
2013
- 2013-10-24 CN CN201310505753.3A patent/CN103545581A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2306792A (en) * | 1995-10-18 | 1997-05-07 | Filtronic Ltd | Microwave multiplexer |
| CN200986960Y (en) * | 2006-12-12 | 2007-12-05 | 摩比天线技术（深圳）有限公司 | Coupled structure between filter and common terminal port and duplex device using the same |
| CN101533940A (en) * | 2009-03-25 | 2009-09-16 | 中国航天科技集团公司第五研究院第五〇四研究所 | Public chamber input multiplexer |
| CN201966309U (en) * | 2011-03-09 | 2011-09-07 | 成都赛纳赛德科技有限公司 | Compact-type band-resistance filter |
| CN203553310U (en) * | 2013-10-24 | 2014-04-16 | 江苏贝孚德通讯科技股份有限公司 | A multi-channel shared-cavity filtering multiplexer |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106785275A (en) * | 2017-02-17 | 2017-05-31 | 京信通信系统（中国）有限公司 | Double-deck chamber combiner and its public port device |
| CN113054349A (en) * | 2019-12-27 | 2021-06-29 | 深圳市大富科技股份有限公司 | Communication device and filter |
| CN113851802A (en) * | 2020-06-28 | 2021-12-28 | 大富科技(安徽)股份有限公司 | Filter and communication equipment |
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Application publication date: 20140129 |