CN102064370A - Mixed filtering combiner - Google Patents
Mixed filtering combiner Download PDFInfo
- Publication number
- CN102064370A CN102064370A CN2009101854836A CN200910185483A CN102064370A CN 102064370 A CN102064370 A CN 102064370A CN 2009101854836 A CN2009101854836 A CN 2009101854836A CN 200910185483 A CN200910185483 A CN 200910185483A CN 102064370 A CN102064370 A CN 102064370A
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- Prior art keywords
- filter
- metal
- combiner
- frequency
- coaxial cavity
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- 238000001914 filtration Methods 0.000 title claims abstract description 13
- 239000002184 metal Substances 0.000 claims abstract description 24
- 229910052751 metal Inorganic materials 0.000 claims abstract description 24
- 239000000919 ceramic Substances 0.000 claims abstract description 6
- 230000008878 coupling Effects 0.000 claims description 11
- 238000010168 coupling process Methods 0.000 claims description 11
- 238000005859 coupling reaction Methods 0.000 claims description 11
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 4
- 229910052709 silver Inorganic materials 0.000 claims description 4
- 239000004332 silver Substances 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 claims 1
- 239000003989 dielectric material Substances 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- 238000005245 sintering Methods 0.000 claims 1
- 239000000758 substrate Substances 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009510 drug design Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
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Abstract
The invention relates to a microwave combiner, in particular a double frequency or multiple frequency combiners suitable for a wireless communication system by adopting different structures for the same combiner, and is a mixed filtering double-frequency or multiple-frequency combiner the volume of which is obviously reduced compared with the original combiner. In the invention, a metal coaxial cavity filter is still adopted for a frequency channel with a high performance index requirement; whereas a media ceramic, LC (inductance and capacitance) and micro strip filter structure is adopted for the frequency channel with low requirement, thereby reducing the volume of the whole combiner.
Description
Technical field
The present invention relates to microwave combiner, particularly adopted different structure to be applicable to double frequency or multiplefrequency mixer in the wireless communication system at same mixer.
Technical background
Wireless communication network signal covers the mixer that adopts at present, most of all-metal coupling coaxial cavity filter that adopts closes the road, because of a certain frequency band signals stronger, for improving its antijamming capability, make that this frequency band filter progression is more, cavity volume is bigger, also strengthens thereby drive the weak frequency range volume of other signals thereupon, cause whole mixer volume big, the weight height.Also because of each frequency range quarter-wave resonance device difference is bigger, the gap that has reaches 3 times, has only the weak point resonator is removed to yield to long resonator, causes the unnecessary wasting of resources.Moreover the metal coaxial filter can realize limited bandwidth, and realize surpassing the above bandwidth of 20% relative bandwidth often needs more progression to reach.Present domestic level has been developed and can have been applied to the dielectric filter that the subnetwork signal covers, and performance index and metal coupling coaxial cavity filter are very nearly the same, and the applying frequency scope can be from 400M-4GHz.The LC filter uses on low frequency that to reduce volume especially obvious.Microstrip filter is remarkable in relative bandwidth broad aspect feasibility.
Summary of the invention
The invention has the advantages that to offer in the wireless communication, thereby satisfied present stage the miniaturization demand in the communication equipment than the littler mixed filtering mixer of virgin metal coaxial cavity mixer volume.
In the recent period for a period of time, the miniaturization demand of communication equipment is obvious day by day, caused that each equipment vendors is for this miniaturization of devices demand, in view of above situation, by rational design, invented a kind of mixed filtering double frequency or multiplefrequency mixer that obviously reduces than former mixer volume, among the present invention, the frequency range that high performance index requires still adopts the metal coupling coaxial cavity filter, then adopt media ceramic, LC and microstrip filter structure for the low frequency range that requires, thereby reduced whole mixer volume.
Fig. 2 is traditional all-metal coaxial cavity filtering mixer, 101 is the metal coaxial cavity, 102 is cover plate, 103 is each frequency band resonance device, the approximate place centre frequency quarter-wave of getting of length, usually with copper or the better metal material of temperature coefficient, 104 signal input and output connectors, 105,106 is to cooperate the additional cavity volume of CH2 passage quarter-wave resonance device.107 for regulating each performance of filter index.CH1, CH2, CH3 are in ANT end coupling synthetic a tunnel.
Fig. 3 is a case of the present invention, and 201 is the CH1 passage, the metal coupling coaxial cavity filter.Described metal coupling coaxial cavity filter is characterized in that, forms single-stage filtering by the metal resonators that places the centre position in single chamber, forms the filter of finishing certain bandwidth by several single-stage filtering by opening the coupling window coupling between chamber and the chamber again.Described coupling window is for mating the metal sidewall that two single-stage filtering are removed.204 is the metal adjusting screw(rod), and described metal adjusting screw(rod) is characterized in that and can revise the whole filter design error by regulating its length.203 is connector, and described connector is characterized by by the metal wire that is welded to Cylindrical Resonators and links connector ferrule.Connector is fixed on the metallic cavity, forms the signal input output end mouth.
202 is dielectric filter, as Fig. 4, described dielectric filter is characterized in that, constitute resonant cavity by microwave-medium ceramics matrix with holes 311 and the silver layer that spreads on around the pottery, mesopore inwall silver layer and open end layout constitute resonator 301,302,303,304,305,306, and independent silver layer pattern 307,308 is the signal input and output electrode, and 309 are the encapsulation pcb board, 310 are the signal shielding lid, stop external signal to be disturbed.
Dielectric filter links to each other with connector by the pcb board that places wire chamber, and PCB is two-sided ground connection, and middle via hole links to each other with the bottom, forms better ground connection and good heat transfer performance, and this makes that the heat that becomes because of dielectric filter loss signal power is spread out of.
Content of the present invention also relates to the compound filter that wire chamber and LC, microstrip filter form are formed, if relate to each filter form of choose reasonable all be contained in this patent.
Description of drawings
Accompanying drawing 1 this patent schematic diagram
Accompanying drawing 2 is a conventional metals coaxial cavity filtering mixer
Accompanying drawing 3 is compound filter mixer of the present invention
The dielectric filter of accompanying drawing 4 for using among the present invention
Claims (7)
1. mixed filtering mixer.Comprise that the above frequently mixed filterings of two frequencies or two that at least one channel signal processing adopts metal coupling coaxial cavity filter and at least one channel signal to handle employing microwave-medium ceramics, LC or microstrip filter composition close the road.
2. metal coupling coaxial cavity filter as claimed in claim 1 is characterized in that, all parts all are to adopt metal material processing to form, and comprise metal shell.Be built in the metal resonators of coaxial cavity central authorities decision device frequency effect.Sealing metal cover plate, and the adjusting screw(rod) that is used to regulate the filter index on the cover plate.
3. microwave-medium filter as claimed in claim 1 is characterized in that, filter matrix itself is dry-pressing formed with microwave dielectric material, and high temperature sintering forms.Ceramic matrix is by spreading on four sides, and the metal level of bottom and mesopore inwall forms shielding cavity.Mesopore other end open circuit determines this device frequency by getting the mesopore quarter-wave.Again with both sides independently two metal levels form input and output electrodes.
4. metal level as claimed in claim 3 is a silver layer.
5. LC filter as claimed in claim 1 is characterized in that, circuit is entirely by the L inductance, and the connection in series-parallel of C electric capacity becomes resonator to be made up of multistage again, and this inductance, electric capacity place on PCB or the ceramic substrate.
6. microstrip filter as claimed in claim 1 is characterized in that filter construction adopts full microstrip structure, and the filter circuit that is about to design applies at pcb board does not have the ground connection aspect,
7. mixed filtering mixer as claimed in claim 1 is characterized in that, by at least two kinds of Hybrid Combiners of forming in the above-mentioned feature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101854836A CN102064370A (en) | 2009-11-16 | 2009-11-16 | Mixed filtering combiner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101854836A CN102064370A (en) | 2009-11-16 | 2009-11-16 | Mixed filtering combiner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102064370A true CN102064370A (en) | 2011-05-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101854836A Pending CN102064370A (en) | 2009-11-16 | 2009-11-16 | Mixed filtering combiner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102064370A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151589A (en) * | 2013-03-05 | 2013-06-12 | 京信通信系统（中国）有限公司 | Combining-dividing structure of cavity radio frequency device and cavity radio frequency device adopting same |
| CN107004938A (en) * | 2014-12-01 | 2017-08-01 | 华为技术有限公司 | Millimeter Waves Dual-Mode formula duplexer and method |
-
2009
- 2009-11-16 CN CN2009101854836A patent/CN102064370A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103151589A (en) * | 2013-03-05 | 2013-06-12 | 京信通信系统（中国）有限公司 | Combining-dividing structure of cavity radio frequency device and cavity radio frequency device adopting same |
| CN107004938A (en) * | 2014-12-01 | 2017-08-01 | 华为技术有限公司 | Millimeter Waves Dual-Mode formula duplexer and method |
| CN107004938B (en) * | 2014-12-01 | 2019-06-21 | 华为技术有限公司 | Millimeter-wave duplexer, construction of a millimeter-wave duplexer, and dual-band signal duplexing method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110518 |