CN102881975A - Filter realizing coupled transmission zeros - Google Patents
Filter realizing coupled transmission zeros Download PDFInfo
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- CN102881975A CN102881975A CN2011101975630A CN201110197563A CN102881975A CN 102881975 A CN102881975 A CN 102881975A CN 2011101975630 A CN2011101975630 A CN 2011101975630A CN 201110197563 A CN201110197563 A CN 201110197563A CN 102881975 A CN102881975 A CN 102881975A
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Abstract
The invention relates to a filter realizing coupled transmission zeros, which comprises a cavity and two connectors, wherein the two connectors are an input connector and an output connector and arranged at the two ends of the cavity respectively; the filter further comprises a first coupling column, a second coupling column, a first resonator, a second resonator and a low-pass element; the input connector is connected with the first coupling column and the second coupling column through the low-pass element; the first coupling column is connected with the first resonator in a coupling manner; and the second coupling column is connected with the second resonator in a coupling manner. Compared with the prior art, the filter has the advantages that the zeros can be distributed more conveniently.
Description
Technical field
The present invention relates to a kind of filter, especially relate to a kind of coupled transfer filter at zero point of realizing.
Background technology
In the modern microwave millimeter-wave systems, filter is one of vitals, is used for channel filtering and selects, the quality of the whole communication system of good and bad directly impact of its performance.Filter with low insertion loss, high inhibition degree, low cost and rapid Design etc. become the requirement of filter key technology, and conventional filter and method for designing are difficult to adapt to the needs of modern development.The generalized chebyshev filter has sharp-pointed frequency selectivity, and group delay that again can flat filter can also form multiband filter, therefore is widely used in various microwave and millimeter wave system.
Traditional circuit realizes can adopting the topological coupled structure of N and N+2 (N 〉=1) filter coupled zero point, but at some fixedly under the claimed structure, at f0
*Produce parasitic couplings in (1.2～1.3) frequency multiplication, can't reach controlling consumption of filter, wherein the f0=passband central frequency.
Summary of the invention
Purpose of the present invention is exactly to provide a kind of coupled transfer filter at zero point of realizing for the defective that overcomes above-mentioned prior art existence.
Purpose of the present invention can be achieved through the following technical solutions:
A kind of coupled transfer filter at zero point of realizing, comprise cavity, joint, described joint is provided with two, be input adapter and out splice going splice, be located at respectively the two ends of cavity, it is characterized in that, also comprise the first coupling column, the second coupling column, the first resonator, the second resonator and the low pass element that are located in the cavity, described input adapter is connected with the first coupling column, the second coupling column respectively by the low pass original paper, described the first coupling column and the first resonator are of coupled connections, and described the second coupling column and the second resonator are of coupled connections.
Described joint is sub-miniature A connector.
Described low pass element is inductance element.
Compared with prior art, the present invention has the following advantages:
1) it is inductive coupled to utilize source and the second chamber to produce, the position that can arrange more easily zero point;
2) this kind coupled structure can not produce parasitic couplings in the scope of f0*2, and the intensity of port and the coupling of the second chamber can calculate by the method for S11 Reflection delay.
Description of drawings
Fig. 1 is structural representation of the present invention.
Embodiment
The present invention is described in detail below in conjunction with the drawings and specific embodiments.
Embodiment
As shown in Figure 1, a kind of coupled transfer filter at zero point of realizing, comprise cavity 1, joint, described joint is provided with two, be input adapter 6 and out splice going splice, be located at respectively the two ends of cavity 1, also comprise the first coupling column 2, the second coupling column 3, the first resonator 4, the second resonator 5 and the low pass element 7 that are located in the cavity, described input adapter 6 is connected with the first coupling column 2, the second coupling column 3 respectively by low pass original paper 7, described the first coupling column 2 and the first resonator 4 are of coupled connections, and described the second coupling column 3 and the second resonator 5 are of coupled connections.Described joint is sub-miniature A connector.Described low pass element 7 is inductance element.
Claims (3)
1. realize the coupled transfer filter at zero point for one kind, comprise cavity, joint, described joint is provided with two, be input adapter and out splice going splice, be located at respectively the two ends of cavity, it is characterized in that, also comprise the first coupling column, the second coupling column, the first resonator, the second resonator and the low pass element that are located in the cavity, described input adapter is connected with the first coupling column, the second coupling column respectively by the low pass original paper, described the first coupling column and the first resonator are of coupled connections, and described the second coupling column and the second resonator are of coupled connections.
2. a kind of coupled transfer filter at zero point of realizing according to claim 1 is characterized in that described joint is sub-miniature A connector.
3. a kind of coupled transfer filter at zero point of realizing according to claim 1 is characterized in that described low pass element is inductance element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110197563.0A CN102881975B (en) | 2011-07-14 | 2011-07-14 | Filter realizing coupled transmission zeros |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110197563.0A CN102881975B (en) | 2011-07-14 | 2011-07-14 | Filter realizing coupled transmission zeros |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102881975A true CN102881975A (en) | 2013-01-16 |
| CN102881975B CN102881975B (en) | 2015-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110197563.0A Expired - Fee Related CN102881975B (en) | 2011-07-14 | 2011-07-14 | Filter realizing coupled transmission zeros |
Country Status (1)
| Country | Link |
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| CN (1) | CN102881975B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108475836A (en) * | 2015-12-24 | 2018-08-31 | 华为技术有限公司 | A kind of filter and Wireless Communication Equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2718801Y (en) * | 2004-04-25 | 2005-08-17 | 摩比天线技术（深圳）有限公司 | Double channel signal combiner |
| CN2731877Y (en) * | 2004-09-22 | 2005-10-05 | 摩比天线技术（深圳）有限公司 | Route synthetizer for GSM/CDMA co-space feedback system base station |
| CN201063353Y (en) * | 2006-12-28 | 2008-05-21 | 武汉凡谷电子技术股份有限公司 | Cavity filter with naught cavity |
| CN201893431U (en) * | 2010-03-12 | 2011-07-06 | 安徽省大富机电技术有限公司 | Cavity body filter and coupling structure thereof |
| CN202167596U (en) * | 2011-07-14 | 2012-03-14 | 凯镭思通讯设备（上海）有限公司 | Filter capable of achieving coupling transmission zeros |
-
2011
- 2011-07-14 CN CN201110197563.0A patent/CN102881975B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2718801Y (en) * | 2004-04-25 | 2005-08-17 | 摩比天线技术（深圳）有限公司 | Double channel signal combiner |
| CN2731877Y (en) * | 2004-09-22 | 2005-10-05 | 摩比天线技术（深圳）有限公司 | Route synthetizer for GSM/CDMA co-space feedback system base station |
| CN201063353Y (en) * | 2006-12-28 | 2008-05-21 | 武汉凡谷电子技术股份有限公司 | Cavity filter with naught cavity |
| CN201893431U (en) * | 2010-03-12 | 2011-07-06 | 安徽省大富机电技术有限公司 | Cavity body filter and coupling structure thereof |
| CN202167596U (en) * | 2011-07-14 | 2012-03-14 | 凯镭思通讯设备（上海）有限公司 | Filter capable of achieving coupling transmission zeros |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108475836A (en) * | 2015-12-24 | 2018-08-31 | 华为技术有限公司 | A kind of filter and Wireless Communication Equipment |
| US10873119B2 (en) | 2015-12-24 | 2020-12-22 | Huawei Technologies Co., Ltd. | Filter and wireless network device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102881975B (en) | 2015-04-08 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150408 Termination date: 20190714 |
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| CF01 | Termination of patent right due to non-payment of annual fee |