CN2718801Y - Double channel signal combiner - Google Patents
Double channel signal combiner Download PDFInfo
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- CN2718801Y CN2718801Y CN 200420045296 CN200420045296U CN2718801Y CN 2718801 Y CN2718801 Y CN 2718801Y CN 200420045296 CN200420045296 CN 200420045296 CN 200420045296 U CN200420045296 U CN 200420045296U CN 2718801 Y CN2718801 Y CN 2718801Y
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- filter
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- signal combiner
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- 238000006880 cross-coupling reaction Methods 0.000 claims description 19
- 230000005540 biological transmission Effects 0.000 claims description 13
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 238000002955 isolation Methods 0.000 abstract description 9
- 238000004891 communication Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 1
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- 238000001914 filtration Methods 0.000 description 1
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Abstract
The utility model relates to a double channel signal combiner, comprising a box body and a cover plate. The box body is provided with a combining port, a branching port which is corresponding to a PHS and a branching port which is corresponding to a WCDMA; a PHS filter is provided between the branching port and the combining port which are corresponding to the PHS; a WCDMA duplexer is provided between the branching port and the combining port which are corresponding to the WCDMA; the WCDMA duplexer comprises a WCDMA receiving channel filter and a WCDMA emitting channel filter, and two filters are connected in parallel. Compared with the prior art, the utility model simplifies the combining structure, the combining cover problems of the PHS and the WCDMA are solved, and the isolation between the PHS system and the WCDMA system when the systems are distributed in a shared room is guaranteed.
Description
Technical field
Radio frequency and microwave that the utility model relates in the wireless communication field close the road device.
Background technology
10 years of past are 10 years that wireless mobile telecommunication technology develops rapidly, especially in China.But,, many times not only need these products commonly used of filter and duplexer, even also need the product of some mixers because the Frequency Distribution of China Mobile has certain particularity.That mixer can comprise is two-in-one, three-in-one, four unification mixers, even more the signal frequency range of multichannel is merged into one tunnel mixer.
The frequency range of China Mobile has CDMA (825-835MHz/870-880MHz) at present, GSM (890-915MHz/935-960MHz), DCS (1710-1755MHz/1805-1850MHz), Personal Handyphone System PHS (1900-1920MHz), and the primary band of 3G systems such as (1920-1980MHz/2110-2170MHz).When each system works independently, generally use duplexer just passable, come to this such as the front end on the base station.
Yet because the natural weakness of radio communication, signal often is subjected to stopping of building and produces in a lot of dead angles, the especially building this phenomenon in indoor distribution will be more serious.In order to overcome this difficulty, indoor distributed system is widely used in indoor expansion as entire wireless communication system.But,, just need a plurality of indoor distributed systems and exist simultaneously and could thoroughly deal with problems if need a cover indoor distributed system to consider by a frequency band.Such scheme had both been destroyed the attractive in appearance of interior of building, increased the cost of operator again.So the notion of mixer is widely adopted.
Be used for the indoor distributed system mixer, its function is that the signal of two or more frequency ranges is lumped together, thereby reaches the purpose of sharing same indoor distributed system.Generally speaking, the transmitting-receiving of each passage is passed through the duplexer of back and is realized, so, in mixer, do not need receiving and launching two frequency sub-band separately.Such problem is that the isolation between each frequency range just can not be done very highly.Such as, between the frequency range of PHS and 3G, almost there is not frequency interval, its mutual isolation just is difficult to accomplish satisfied.This problem does not obtain fine solution at present.
The utility model content
To be solved in the utility model is good isolation between PHS and 3G (WCDMA) frequency range, the uplink and downlink signal that is distributed in a plurality of mobile communications networks is covered in a cover indoor distributed system, proposes a kind of novel PHS and the solution of WCDMA indoor distributed system.
The technical solution of the utility model is:
A kind of two-band signal combiner comprises box body and cover plate, has one to close road port on the box body, a branch road port and the branch road port corresponding to WCDMA corresponding to PHS; Corresponding to the branch road port of PHS with to close between the road port be a PHS filter; Corresponding to the branch road port of WCDMA with to close between the road port be a WCDMA duplexer; Described WCDMA duplexer comprises WCDMA receive path filter and WCDMA transmission channel filter, and two-way filter is parallel to be connected.
Described PHS filter, WCDMA receive path filter and WCDMA transmission channel filter all are coaxial cavity filters.
Described coaxial cavity filter is to be made of some coaxial cavity resonators, is coupled by window between the adjacent cavity.
The having many bends or curves arrangement of the coaxial cavity of described formation filter or be is in a zigzag arranged.The PHS path filter can adopt nine coaxial cavities and three cross-couplings limits; WCDMA receive path filter can adopt ten coaxial cavities and three cross-couplings limits, and WCDMA transmission channel filter can adopt five coaxial cavities and two cross-couplings limits.
Described coaxial cavity resonator is the circular cylindrical cavity that contains cylindrical resonant rod, and described resonant rod top is provided with shrinkage pool.On the cover board be provided with screw rod corresponding to each described circular cylindrical cavity, stretch in the described shrinkage pool its lower end.
On the basis of such scheme, can also insert a low pass filter closing between road port and three filters.
Adopt mixer described in the utility model, compared with prior art, simplified and closed line structure, what solved PHS and WCDMA closes the road covering problem, has guaranteed the isolation between system when shared indoor distributed system of PHS system and WCDMA system.
Description of drawings
Fig. 1 is a structured flowchart of the present utility model;
Fig. 2 is the box body inner structure figure in the utility model;
Fig. 3 is shrinkage pool circular cylindrical cavity and the screw-rod structure schematic diagram in the utility model;
Fig. 4 is the cover plate schematic diagram in the utility model.
Embodiment
The utility model comprises a PHS filter and a WCDMA duplexer.The utility model separates the receive path (Rx) and the transmission channel (Tx) of WCDMA frequency range, is divided into two-way filter, and two-way filter adopts parallel connected mode.Wherein, PHS filter working frequency range: 1900-1915MHz; WCDMA duplexer receive path (Rx) working frequency range: 1920-1980MHz; WCDMA duplexer transmission channel (Tx) working frequency range: 2110-2170MHz.At public port, three filters are together in parallel, and reach by the mutual phase place of suitable adjusting common port and to make the signal of filter different frequency section all reach good coupling in common port.
This mixer is provided with a branch road port that closes road port and corresponding one by one PHS, WCDMA, from closing road port, be divided into three branch lines with transmission line, every branch line is connected with a coaxial cavity resonator, and each coaxial cavity is adjacent cavity at least by window and is coupled.Described filter is a coaxial cavity filter, and each filter and a branch road port join, and constitutes one minute three or the three-in-one line structure that closes with this.
Be further described below in conjunction with the enforcement of accompanying drawing technical scheme:
Fig. 1 is a structured flowchart of the present utility model.As shown in the figure, this mixer is three port organizations, by PHS port, WCDMA port and close road port and form.At PHS with close between the road port by a path filter it is linked to each other, at WCDMA with close two-way filter is arranged between the road port, constitute a WCDMA duplexer, the shared WCDMA port of this two-way filter.This two-way of PHS and WCDMA links to each other with the external world by the common road port that closes.
The utility model is made of box body 1, cover plate 2.Fig. 2 is the box body inner structure figure in the utility model.Fig. 4 is the cover plate schematic diagram.As Fig. 2 and shown in Figure 4, this two-frequency signal mixer closes road port 5 by be provided with 3,4 and one of two branch road ports in the box body both sides, and PHS and WCDMA two paths of signals are respectively by port 4 and port 3 inputs, and microwave closes the road signal by closing road port 5 outputs.Box body inside is provided with partition, and cavity is divided into three parts, is respectively the two-way filter of WCDMA and the path filter of PHS.Three path filters all are coaxial cavity filters, are to be made of some coaxial cavity resonators, and the having many bends or curves arrangement of coaxial cavity or be is in a zigzag arranged, and is coupled by window between the adjacent cavity.The PHS path filter has adopted nine coaxial cavities and three cross-couplings limits; WCDMA receive path filter has adopted ten coaxial cavities and three cross-couplings limits, and WCDMA transmission channel filter has adopted five coaxial cavities and two cross-couplings limits.
The signal flow of three path filters is to respectively shown in A, B, C.In the filter of PHS one tunnel, 6,7,8 is respectively the groove for realizing that cross-couplings is opened between cavity.In the duplexer of WCDMA one tunnel, the Rx of reception and two filters of emission Tx are arranged.In the Tx filter, the 9, the 10th, for the groove of realizing that cross-couplings is opened.In the Rx filter, the 11,12, the 13rd, for the groove of realizing that cross-couplings is opened.Using cross-linked purpose in cavity is in order to make two frequency ranges of PHS and WCDMA reach better isolation, to make the inhibition of two paths of signals reach best.Described coaxial cavity resonator is the circular cylindrical cavity that contains cylindrical resonant rod 14, and described resonant rod 14 tops are provided with shrinkage pool, as shown in Figure 3.
As Fig. 3 and Fig. 4, on the cover board 2 be provided with adjusting screw(rod) 15 corresponding to each the described circular cylindrical cavity in the box body, its lower end stretch in the described circular cylindrical cavity the shrinkage pool on resonant rod 14 tops in.Described adjusting screw(rod) 15 is matched with the cover plate screw by screw and nut and constitutes, adjusting screw(rod) trimmer amount, with adapt to the accurately requirement of transmission of mixer, regulate finish after fixing and locking at once.
As Fig. 2, closing road port 5 places, stretch out a small-sized low pass filter 16.The effect of this low pass filter is the high order harmonic component in the filtering passage, disturbs in order to avoid produce.In the end of low pass 16, draw 3 metal line and be welded on the resonant rod 14 in 3 adjacent circular cylindrical cavities.Divide the core utmost point of road port 3,4 to be welded to connect by the cylindrical resonant rod that plain conductor is adjacent.By common port, PHS and WCDMA3 filter are together in parallel, reach by the mutual phase place of suitable adjusting common port and make the signal of filter different frequency section all reach good coupling in common port.
Since input and output can reverse configuration in the different circuit of microwave frequency band, so this mixer also can be used as splitter, promptly, carry out shunt through this device by former output port 5 inputs, the two-way shunting sign is by former input port 3,4 outputs, so just become splitter.
To sum up, adopt mixer described in the utility model, compared with prior art, this mixer adopts optimizes the coaxial cavity physical dimension, and, have only 5MHz at interval down to PHS and WCDMA interchannel by rational cross-couplings form, effective isolation degree and the little interior Insertion Loss of passband are provided, two interchannel isolations are greater than 80dB, and maximum insertion is less than 2.7dB in the passband.What solved PHS and WCDMA closes the road covering problem, has guaranteed the isolation between system when shared indoor distributed system of PHS system and WCDMA system.
Claims (10)
1, a kind of two-band signal combiner comprises box body (1) and cover plate (2), it is characterized in that, has one to close road port (5), a branch road port (4) and the branch road port (3) corresponding to WCDMA corresponding to PHS on the box body; Described corresponding to PHS branch road port (4) and to close between the road port (5) be a PHS filter; Described corresponding to WCDMA branch road port (3) and to close between the road port (5) be a WCDMA duplexer; Described WCDMA duplexer comprises WCDMA receive path filter and WCDMA transmission channel filter, and two-way filter is parallel to be connected.
2, the described two-band signal combiner of claim 1 is characterized in that, described PHS filter, WCDMA receive path filter and WCDMA transmission channel filter all are coaxial cavity filters.
3, the described two-band signal combiner of claim 2 is characterized in that, described coaxial cavity filter is to be made of some coaxial cavity resonators, is coupled by window between the adjacent cavity.
4, the described two-band signal combiner of claim 3 is characterized in that, the having many bends or curves arrangement of the coaxial cavity of described formation filter or be is in a zigzag arranged.
5, the described two-band signal combiner of claim 4 is characterized in that, described coaxial cavity resonator is the circular cylindrical cavity that contains cylindrical resonant rod (14), and described resonant rod (14) top is provided with shrinkage pool.
6, the described two-band signal combiner of claim 5 is characterized in that, upward the resonant rod in the described circular cylindrical cavity (14) is provided with screw rod (15) corresponding to each at described cover plate (2), and stretch in the described shrinkage pool its lower end.
7, claim 1,2,3,4 or 6 described two-band signal combiner is characterized in that, insert a low pass filter (16) between road port (5) and three filters closing.
8, claim 2,3,4 or 6 described two-band signal combiner is characterized in that, the PHS path filter has adopted nine coaxial cavities and three cross-couplings limits; WCDMA receive path filter has adopted ten coaxial cavities and three cross-couplings limits, and WCDMA transmission channel filter has adopted five coaxial cavities and two cross-couplings limits.
9, the described two-band signal combiner of claim 5 is characterized in that, the PHS path filter has adopted nine coaxial cavities and three cross-couplings limits; WCDMA receive path filter has adopted ten coaxial cavities and three cross-couplings limits, and WCDMA transmission channel filter has adopted five coaxial cavities and two cross-couplings limits.
10, the described two-band signal combiner of claim 7 is characterized in that, the PHS path filter has adopted nine coaxial cavities and three cross-couplings limits; WCDMA receive path filter has adopted ten coaxial cavities and three cross-couplings limits, and WCDMA transmission channel filter has adopted five coaxial cavities and two cross-couplings limits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420045296 CN2718801Y (en) | 2004-04-25 | 2004-04-25 | Double channel signal combiner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420045296 CN2718801Y (en) | 2004-04-25 | 2004-04-25 | Double channel signal combiner |
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| CN2718801Y true CN2718801Y (en) | 2005-08-17 |
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| CN 200420045296 Expired - Fee Related CN2718801Y (en) | 2004-04-25 | 2004-04-25 | Double channel signal combiner |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008141482A1 (en) * | 2007-05-23 | 2008-11-27 | Comba Telecom System (China) Ltd. | A DCS/WCDMA DUAL FREQUENCY SYNTHESIZER AND A general dual frequency synthesizer |
| CN101262242B (en) * | 2008-04-18 | 2011-06-15 | 南京天博达通信系统有限公司 | N+1 dual frequency channel mixing method and its special channel mixer |
| CN101321330B (en) * | 2008-07-22 | 2012-01-18 | 京信通信系统（中国）有限公司 | Same-frequency band combination and shunt circuit composite unit, apparatus and method |
| CN102881975A (en) * | 2011-07-14 | 2013-01-16 | 凯镭思通讯设备（上海）有限公司 | Filter realizing coupled transmission zeros |
| CN111033886A (en) * | 2018-07-20 | 2020-04-17 | 深圳市大富科技股份有限公司 | Cross coupling structure and cavity filter |
| CN113036366A (en) * | 2019-12-25 | 2021-06-25 | 深圳市大富科技股份有限公司 | Communication system and filter thereof |
| CN113036361A (en) * | 2019-12-25 | 2021-06-25 | 深圳市大富科技股份有限公司 | Communication device and filter thereof |
| CN113054335A (en) * | 2019-12-27 | 2021-06-29 | 深圳市大富科技股份有限公司 | Communication device and filter |
-
2004
- 2004-04-25 CN CN 200420045296 patent/CN2718801Y/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008141482A1 (en) * | 2007-05-23 | 2008-11-27 | Comba Telecom System (China) Ltd. | A DCS/WCDMA DUAL FREQUENCY SYNTHESIZER AND A general dual frequency synthesizer |
| CN101312355B (en) * | 2007-05-23 | 2012-05-09 | 京信通信系统（中国）有限公司 | DCS/WCDMA dual-frequency combiner and general dual-frequency combiner |
| US8680943B2 (en) | 2007-05-23 | 2014-03-25 | Comba Telecom System (China) Ltd. | DCS/WCDMA dual frequency synthesizer and a general dual frequency synthesizer |
| CN101262242B (en) * | 2008-04-18 | 2011-06-15 | 南京天博达通信系统有限公司 | N+1 dual frequency channel mixing method and its special channel mixer |
| CN101321330B (en) * | 2008-07-22 | 2012-01-18 | 京信通信系统（中国）有限公司 | Same-frequency band combination and shunt circuit composite unit, apparatus and method |
| CN102881975A (en) * | 2011-07-14 | 2013-01-16 | 凯镭思通讯设备（上海）有限公司 | Filter realizing coupled transmission zeros |
| CN102881975B (en) * | 2011-07-14 | 2015-04-08 | 凯镭思通讯设备（上海）有限公司 | Filter realizing coupled transmission zeros |
| CN111033886A (en) * | 2018-07-20 | 2020-04-17 | 深圳市大富科技股份有限公司 | Cross coupling structure and cavity filter |
| CN113036366A (en) * | 2019-12-25 | 2021-06-25 | 深圳市大富科技股份有限公司 | Communication system and filter thereof |
| CN113036361A (en) * | 2019-12-25 | 2021-06-25 | 深圳市大富科技股份有限公司 | Communication device and filter thereof |
| CN113054335A (en) * | 2019-12-27 | 2021-06-29 | 深圳市大富科技股份有限公司 | Communication device and filter |
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| CF01 | Termination of patent right due to non-payment of annual fee |