CN101986459B - Combiner for ultra-wideband wireless communication - Google Patents
Combiner for ultra-wideband wireless communication Download PDFInfo
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- CN101986459B CN101986459B CN2010105316356A CN201010531635A CN101986459B CN 101986459 B CN101986459 B CN 101986459B CN 2010105316356 A CN2010105316356 A CN 2010105316356A CN 201010531635 A CN201010531635 A CN 201010531635A CN 101986459 B CN101986459 B CN 101986459B
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Abstract
The invention discloses a combiner for ultra-wideband wireless communication. The combiner comprises a high-frequency port, a lower-frequency port and a combining port, wherein a high-frequency band filter is arranged between the high-frequency port and the combining port; and a low-frequency band filter is arranged between the low-frequency port and the combining port. The combiner is characterized in that the high-frequency band filter and the low-frequency band filter are interdigital cavity filters. The combiner has the advantages that: the combiner is realized by two interdigital cavity filters, so that the defects that filters such as a micro-strip filter, a dielectric filter and the like have small power capacity, low intermodulation, large insertion loss and the like can be overcome, the defect that a coaxial comb filter has narrow bandwidth also can be overcome, and 70 percent of bandwidth can be realized maximally.
Description
Technical field
The present invention relates to a kind of mixer, especially relate to a kind of combiner for ultra-wideband wireless communication.
Background technology
In the engineering application, the radiofrequency signal of two or more different frequency scope need to be closed road output.Adopt mixer, can make a cover indoor distributed system work in simultaneously multiple frequency range.The problems such as at present, the mixer that exists on the market mainly contains little band mixer, pectination mixer etc., and wherein little band mixer exists power less, and Insertion Loss is larger; The problems such as and the pectination mixer exists frequency band narrower, and volume is larger.
Summary of the invention
Technical problem to be solved by this invention is to provide that a kind of arrowband is wider, the combiner for ultra-wideband wireless communication of small volume.
The present invention solves the problems of the technologies described above the technical scheme that adopts: a kind of combiner for ultra-wideband wireless communication, comprise high frequency port, low frequency port and close road port, described high frequency port and described closing between road port are provided with high-frequency band filter, described low frequency port and described closing between road port are provided with low band filter, it is characterized in that described high-frequency band filter and low band filter are all interdigital cavity body filter.
It also comprises the sugarcoated haws low pass filter, an end of described sugarcoated haws low pass filter with close road port and be connected, the other end of described sugarcoated haws low pass filter is connected with low band filter with high-frequency band filter respectively.
Described interdigital cavity body filter comprises resonant cavity, a plurality of resonant column and two feeder pillars, described resonant cavity comprises the first chamber wall and the second chamber wall that is in opposite face, described a plurality of resonant column and two feeder pillars are arranged in parallel within described resonant cavity, described a plurality of resonant column is divided into first group of resonant column and second group of resonant column, described two feeder pillars are divided into the first feeder pillar and the second feeder pillar
One end of the resonant column on described first group of resonant column is fixed on the first chamber wall, and the other end is free end,
One end of the resonant column on described second group of resonant column is fixed on the second chamber wall, and the other end is free end,
Resonant column on resonant column on described first group of resonant column and described second group of resonant column is spaced in resonant cavity,
One end of the first feeder pillar is connected with high frequency port or low frequency port, and the other end of the first feeder pillar is free end, an end of the second feeder pillar be connected with the sugarcoated haws low pass filter by plain conductor, the second feeder pillar other end is free end.
Be provided with the polytetrafluoroethylene fixed mount in described resonant cavity, described resonant column and described feeder pillar rest on described polytetrafluoroethylene fixed mount.
The length of resonant column be described high-frequency band filter or low band filter the passband central frequency wavelength 1/4.
Compared with prior art, the invention has the advantages that this mixer is owing to the interdigital cavity body filter of two-way, realizing, so both can make up that the power capacity of microstrip filter and dielectric filter is little, intermodulation is low and the shortcoming such as insertion loss is large, also can make up the shortcoming of coaxial comb filter narrow bandwidth, maximum can realize 70% bandwidth, and coaxial comb filter can only realize 30% bandwidth.
Interdigital cavity body filter is compared the pectination cavity body filter, and its volume reduces over half, and therefore mixer of the present invention is compared the mixer that adopts the pectination cavity body filter, and volume reduces over half, and the enclosure volume of mixer reduces, and has reduced production cost.
The parasitic passband of interdigital cavity body filter is near and obviously apart from passband, so add a sugarcoated haws structure low pass filter to suppress parasitic passband closing road port.Thereby make the high band of mixer and the parasitic band suppression of low-frequency range.
Description of drawings
Fig. 1 is three-dimensional structure diagram of the present invention;
Fig. 2 is vertical view of the present invention.
Embodiment
Embodiment is described in further detail the present invention below in conjunction with accompanying drawing.
A kind of combiner for ultra-wideband wireless communication, comprise high frequency port one, low frequency port 2 and close road port 3, high frequency port one and close between road port 3 and be provided with high-frequency band filter 4, low frequency port 2 and close between road port 3 and be provided with low band filter 5, high-frequency band filter 4 and low band filter 5 are all interdigital cavity body filter.
It also comprises sugarcoated haws low pass filter 6, an end of sugarcoated haws low pass filter 6 with close road port 3 and be connected, the other end of sugarcoated haws low pass filter 6 is connected and is connected with low band filter with high-frequency band filter 4 respectively.
Interdigital cavity body filter comprises resonant cavity 7, a plurality of resonant column 8 and two feeder pillars 9, resonant cavity 7 comprises the first chamber wall 71 and the second chamber wall 72 that is in opposite face, a plurality of resonant columns 8 and two feeder pillars 9 are arranged in parallel within resonant cavity 7, a plurality of resonant columns 8 are divided into first group of resonant column and second group of resonant column, two feeder pillars 9 are divided into the first feeder pillar 91 and the second feeder pillar 92
One end of the resonant column 81 on first group of resonant column is fixed on the first chamber wall 71, and the other end is free end,
One end of the resonant column 82 on second group of resonant column is fixed on the second chamber wall 72, and the other end is free end,
One end of the first feeder pillar 91 is connected with high frequency port one or low frequency port 2, the other end of the first feeder pillar 91 is free end, one end of the second feeder pillar 92 be connected with sugarcoated haws low pass filter 6 by plain conductor 11, second feeder pillar 92 other ends are free end.
Be provided with polytetrafluoroethylene fixed mount 12 in resonant cavity 7, resonant column 8 and feeder pillar 9 rest on the polytetrafluoroethylene fixed mount 12.
The length of resonant column 8 is 1/4 wavelength of the passband central frequency of high-frequency band filter 4 or low band filter 5.
Bandwidth refers to the spectrum width that need to pass through, BWxdB=(f2-f1).F1, f2 be for take centre frequency f0 place insertion loss as benchmark, decline X(dB) locate the left and right side frequency point of correspondence.Usually be that BW3dB, BW1dB, BW0.5dB characterize the filter passband bandwidth parameter with X=3,1,0.5.Fractional bandwidth (fractional bandwidth)=BW3dB/f0 * 100%, also be commonly used to characterize the filter passband bandwidth.
Claims (1)
1. combiner for ultra-wideband wireless communication, comprise high frequency port, low frequency port and close road port, described high frequency port and described closing between road port are provided with high-frequency band filter, described low frequency port and described closing between road port are provided with low band filter, it is characterized in that described high-frequency band filter and low band filter are all interdigital cavity body filter;
It also comprises the sugarcoated haws low pass filter, an end of described sugarcoated haws low pass filter with close road port and be connected, the other end of described sugarcoated haws low pass filter is connected with low band filter with high-frequency band filter respectively;
Described interdigital cavity body filter comprises resonant cavity, a plurality of resonant column and two feeder pillars, described resonant cavity comprises the first chamber wall and the second chamber wall that is in opposite face, described a plurality of resonant column and two feeder pillars are arranged in parallel within described resonant cavity, described a plurality of resonant column is divided into first group of resonant column and second group of resonant column, described two feeder pillars are divided into the first feeder pillar and the second feeder pillar
One end of the resonant column on described first group of resonant column is fixed on the first chamber wall, and the other end is free end,
One end of the resonant column on described second group of resonant column is fixed on the second chamber wall, and the other end is free end,
Resonant column on resonant column on described first group of resonant column and described second group of resonant column is spaced in resonant cavity,
One end of the first feeder pillar is connected with high frequency port or low frequency port, and the other end of the first feeder pillar is free end, an end of the second feeder pillar be connected with the sugarcoated haws low pass filter by plain conductor, the second feeder pillar other end is free end;
Be provided with the polytetrafluoroethylene fixed mount in described resonant cavity, described resonant column and described feeder pillar rest on described polytetrafluoroethylene fixed mount;
The length of resonant column be described high-frequency band filter or low band filter the passband central frequency wavelength 1/4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105316356A CN101986459B (en) | 2010-11-04 | 2010-11-04 | Combiner for ultra-wideband wireless communication |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105316356A CN101986459B (en) | 2010-11-04 | 2010-11-04 | Combiner for ultra-wideband wireless communication |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101986459A CN101986459A (en) | 2011-03-16 |
| CN101986459B true CN101986459B (en) | 2013-11-13 |
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| CN2010105316356A Expired - Fee Related CN101986459B (en) | 2010-11-04 | 2010-11-04 | Combiner for ultra-wideband wireless communication |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403702B (en) * | 2011-11-22 | 2013-11-06 | 中国舰船研究设计中心 | HF/VHF frequency-range ultra wide band electromagnetic pulse protection module |
| CN107453015A (en) * | 2017-07-26 | 2017-12-08 | 德清利维通讯科技股份有限公司 | A kind of microstrip broadband dual-frequency combiner |
| CN114530677B (en) * | 2022-01-27 | 2024-04-26 | 恒尔威科技(苏州)有限公司 | Ultra-wideband miniaturized cavity combiner |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5020194A (en) * | 1990-03-07 | 1991-06-04 | Mobil Oil Corporation | Leakproof zipper with slider |
| CN1112296A (en) * | 1995-03-15 | 1995-11-22 | 福建省邮电科学研究所 | Microwave interdigitated low-resistance filter |
| CN1707848A (en) * | 2004-06-11 | 2005-12-14 | 夏普株式会社 | Low-pass filter circuit, power amplifier and high-frequency communication apparatus |
| CN201018487Y (en) * | 2007-03-12 | 2008-02-06 | 京信通信系统（中国）有限公司 | Ultra-broadband dual-frequency combiner |
| 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 |
-
2010
- 2010-11-04 CN CN2010105316356A patent/CN101986459B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5020194A (en) * | 1990-03-07 | 1991-06-04 | Mobil Oil Corporation | Leakproof zipper with slider |
| CN1112296A (en) * | 1995-03-15 | 1995-11-22 | 福建省邮电科学研究所 | Microwave interdigitated low-resistance filter |
| CN1707848A (en) * | 2004-06-11 | 2005-12-14 | 夏普株式会社 | Low-pass filter circuit, power amplifier and high-frequency communication apparatus |
| CN201018487Y (en) * | 2007-03-12 | 2008-02-06 | 京信通信系统（中国）有限公司 | Ultra-broadband dual-frequency combiner |
| 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 |
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| CN101986459A (en) | 2011-03-16 |
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