CN2595111Y - Multiple frequency channel signal synthesizer for mobile communication - Google Patents
Multiple frequency channel signal synthesizer for mobile communication Download PDFInfo
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- CN2595111Y CN2595111Y CN03219292U CN03219292U CN2595111Y CN 2595111 Y CN2595111 Y CN 2595111Y CN 03219292 U CN03219292 U CN 03219292U CN 03219292 U CN03219292 U CN 03219292U CN 2595111 Y CN2595111 Y CN 2595111Y
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- filter
- coaxial cavity
- cavity resonator
- road port
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies
- H01P1/2136—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies using comb or interdigital filters; using cascaded coaxial cavities
Abstract
The utility model relates to a multiple frequency channel signal synthesizer for mobile communication, which is provided with a path combined port [G] and a branch port corresponding to each frequency section one by one. From the path combined port [G], a transmission line [1] is divided into at least two branch lines. The multiple frequency channel signal synthesizer is characterized in that each branch line is coupled with a coaxial cavity resonator [2], and each coaxial cavity resonator [2] is coupled with a first resonator of a filter [3] through respective windows; the filter [3] is a coaxial cavity filter, and each filter [3] is correspondingly connected with one branch port to form the multiple combined or separate two stages of mixing combined path structure. The scheme obviously simplifies the combined path structure and obviously lowers the configuration difficulty of the synthesizer. The utility model has good actual significance for solving the path combined covering problem of a CDMA and a GSM.
Description
Technical field
The utility model relates to radio frequency and the microwave combiner in the wireless communication field, say so more specifically based on a kind of mixer of coaxial cavity resonator, this mixer can be merged into multichannel different frequency range signal one the road or with one tunnel different frequency range signal demultiplexing that merges.Utilize design provided by the utility model can make the signal of multichannel different frequency range divide the realization of mixer to become a lot of easily.
Background technology
10 years of past are 10 years of wireless mobile telecommunication technology develop 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.Mixer can comprise two-in-one, and is three-in-one, four unifications, even more the signal frequency range of multichannel merges into one the tunnel.This mixer product has just proposed to have more challenging requirement to design.
The frequency range of China Mobile has CDMA (825-835MHz/870-880MHz) at present, GSM (890-915MHz/935-960MHz), DCS (1710-1755MHz/1805-1850MHz), and the 3G primary band systems such as (1920-1980MHz/2110-2170MHz) that announces recently.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, especially some buildings 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 a lot of costs again.Thereby the notion of mixer is widely adopted.
So-called mixer lumps together the same indoor distributed system of shared in common to the signal of two or more frequency ranges exactly.Generally speaking, do not need receiving and launching two frequency sub-band separately.Such problem be the isolation between each frequency range just differ and do surely very high.Such as, between CDMA and GSM frequency range, because of having only the frequency separation of 10MHz, its mutual isolation just is difficult to accomplish satisfied.In order to address this problem, wherein a solution is receiving and launching and also separate.Like this, because the band width relative narrower of each passband, mutual isolation has also just been done than being easier to.Like this, two-in-one mixer originally (CDMA and GSM) just need become four unification mixers.
Four unification mixers mainly are together in parallel by four filters, 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.Generally four path filters rightly and structure together star formula structure, two-stage downtree hat structure, main line bifurcation structure are arranged.
Accompanying drawing 2 provides star formula structure.The characteristics of this structure are comparatively compact each other.But in fact because each resonator of coaxial cavity filter all will occupy certain space, and be difficult to so compact being close together, thereby make the realization of concrete work certain degree of difficulty occur.
What accompanying drawing 3 provided is two-stage downtree hat structure.This structure is that the two-stage distribution has widened distance each other because of it, thereby makes the distribution of four path filters more or less freely.But owing to be two-stage, the parameter of required control also increases (four sections transmission lines by star formula structure have become six sections) to some extent.
Also having a kind of structure is the dichotomous structure of main line, as schemes shown in attached 4.This structure further widens the distance between each road, makes four row of lining up that four path filters can be neat.But the parameter of required control also further has been increased to seven.This mechanism generally is used on the multiplexer of waveguide filter composition more.The input and output multiplexer majority of satellite communication is such structure.
More than the common feature of three kinds of structures be exactly that the adjustment of each branch line phase place is complicated, to have four sections transmission lines need do very appropriate adjustment at least.At this problem, the utility model proposes a kind of simple relatively structure and realize the mixer of All-in-One, and the structure of this novelty is used in the four unification systems of mobile communication CDMA and GSM.
Summary of the invention
For achieving the above object, the technical solution adopted in the utility model is: a kind of mobile communication multi-band signal mixer, be provided with a branch road port that closes road port and corresponding one by one each frequency range, from closing road port, be divided at least two branch lines with transmission line, every branch line and a coaxial cavity resonator are coupled, and each coaxial cavity resonator is coupled by mutual window with first resonator of a filter at least, described filter is a coaxial cavity filter, each filter and a corresponding connection of branch road port constitute All-in-One or the two-stage more than a minute is closed line structure with this.
Related content and change interpretation in the technique scheme are as follows:
1, in the such scheme, described mixer also can be described as splitter, and this is comparatively speaking.The filter that each frequency range adopted then is common coaxial cavity filter.
2, in the such scheme, described branch line is the transmission line with certain-length and impedance, and this transmission line is made of jointly the wall of wire or metal bar and metallic cavity usually.Described branch line and coaxial cavity resonator are coupled, and are wire or metal bar are directly connected to certain position on the stub in the coaxial cavity resonator, but also can pass through other modes, as probe, loop etc.
3, in the such scheme, described each coaxial cavity resonator is to use as the whole second level of closing road (along separate routes) structure, and its resonance frequency is associated with the band connection frequency of the multiband that is coupled respectively.The ordering of each frequency range need be followed certain principle, i.e. the branch road port of shared same coaxial cavity resonator, and adopting successive bands be the best.
4, in the such scheme, described All-in-One or the two-stage more than a minute are closed line structure, can be configured according to actual needs, that is to say can develop into two-in-one, three-in-one, four the unification, five in one, the six directions one ..., wait multi-form mixer.Can become one being divided into two such as the T type structure of the first order and be divided into three, and each branch is divided into two-way or three tunnel by partial common resonator again, also can be regardless of and remain one the tunnel, by that analogy, further expand, wherein more typically have:
(1), four unification mixers
This mixer is provided with one and closes road port and four branch road ports, from closing road port, be divided into two branch lines with transmission line, every branch line and a coaxial cavity resonator are coupled, and each coaxial cavity resonator is coupled by first coaxial cavity resonator in the filter of two windows and two different frequency ranges respectively, constitutes four unifications or one minute four two-stage is closed line structure with this.
This four unifications mixer can be applied in CDMA and the gsm system, wherein, first branching filter is CDMA Rx (825-835MHz) frequency range, second branching filter is CDMA Tx (870-880MHz) frequency range, the 3rd branching filter is GSM Rx (890-915MHz) frequency range, and the 4th branching filter is GSM Tx (935-960MHz) frequency range.
(2), two-in-one mixer
This mixer is provided with one and closes road port and two branch road ports, from closing road port, be divided into two branch lines with transmission line, every branch line and a coaxial cavity resonator are coupled, and each coaxial cavity resonator is coupled by first coaxial cavity resonator in two windows and two the different frequency range filters respectively.Then, two CDMA ports are combined into a common CDMA port by T type structure, two GSM ports also are combined into a common GSM port by T type structure, a common CDMA port is connected two branch road ports respectively with a common GSM port.The two-stage that so just constitutes two-in-one or one-to-two is closed line structure.
(3), the six directions one mixer
This mixer is provided with one and closes road port and six branch road ports, from closing road port, be divided into three branch lines with transmission line, every branch line and a coaxial cavity resonator are coupled, and each coaxial cavity resonator respectively first coaxial cavity resonator of the filter by two windows and two different frequency ranges be coupled, close line structure with this two-stage that constitutes the six directions one or one minute six.
This six directions one mixer can be applied in CDMA, GSM in the future and the 3G system, wherein, first branching filter is CDMA Rx (825-835MHz) frequency range, second branching filter is CDMATx (870-880MHz) frequency range, the 3rd branching filter is GSM Rx (890-915MHz) frequency range, the 4th branching filter is GSM Tx (935-960MHz) frequency range, and the 5th branching filter is 3G Rx (1920-1980MHz) frequency range, and the 6th branching filter is 3G Tx (2110-2170MHz) frequency range.
Because the technique scheme utilization, the utility model compared with prior art has following advantage:
1, simplified significantly and closed line structure.Not only make it be easy to assembling, more make it reach required phase matched easily.
2, reduced the configuration difficulty of whole mixer significantly.Owing to adopted the two-stage knot, and used common resonator, make and close the road part bigger leeway and flexibility have spatially been arranged.
3, the road covering problem that closes that solves present CDMA and GSM there is very big realistic meaning.
4, to future the 3G frequency range adding may bring the mixer performance more is strict with, the assurance of feasibility then is provided.
Description of drawings
Accompanying drawing 2 is existing mixer star formula structural representation;
Accompanying drawing 3 is existing mixer the two poles of the earth downtree hat structural representation;
Accompanying drawing 4 is tied dichotomous structural representation for existing angle mixer master.
In the above accompanying drawing: 1, transmission line; 2, coaxial cavity resonator; 3, filter; 4; I, first fen road port; II, second fen road port; III, the 3rd fen road port; IV, the 4th fen road port; G, close road port.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described:
Embodiment one: shown in accompanying drawing 1, a kind of mobile communication four frequency band signals mixers, be provided with one and close road port G and four branch road port I, II, III, IV, from closing road port G, be divided into two branch lines with transmission line 1, every branch line and a coaxial cavity resonator 2 are coupled, and each coaxial cavity resonator 2 respectively first coaxial cavity resonator of the filter 3 by two windows and two different frequency ranges be coupled, each filter 3 and a corresponding connection of branch road port constitute four unifications or one minute four two-stage is closed line structure with this.
The structure of the first order is the same with the first order that the two-stage downtree is preced with in the structure, is divided into two branch lines (can be described as T type knot) by closing road port G.Each branch line is that the transmission line 1 with certain-length and impedance constitutes, and this transmission line 1 is made of jointly the wall of wire or metal bar and metallic cavity.Described branch line and coaxial cavity resonator 2 are coupled, and are wire or metal bar are directly connected to certain position on the stub in the coaxial cavity resonator 2, but also can pass through other modes, as probe, loop etc.
The second level then is two simple coaxial cavity resonators 2, and the inner wire part of only having drawn coaxial cavity resonator 2 among the figure is with the outstanding notion that is proposed.These two coaxial cavity resonators 2 directly are coupled together by mutual distance and the window opened etc. with two-way filter 3 first resonator separately respectively again.The resonance frequency of described each coaxial cavity resonator 2 is associated with the band connection frequency of the multiband that is coupled respectively, and the ordering of each frequency range is: the branch road port of shared same coaxial cavity resonator 2, it is best adopting successive bands.The advantage of this structure is exactly that mixer complicated in the four unification systems has been simplified to the T type structure that general duplexer adopted, and simultaneously spatially ingeniously utilize two resonators and further be divided into two, directly be coupled with two filters 3 respectively.Owing to had space length, the distribution of four path filters 3 just to become easily a lot.And this directly to be coupled to the mode of filter 3 by resonator 2 simple in structure many than branch line.Utilize this programme can the CDMA in the existing mobile communication of China also be in the same place with GSM.
Embodiment two: a kind of mobile communication six frequency band signals mixers, be provided with one and close road port G and six branch road ports, from closing road port, be divided into three branch lines with transmission line, every branch line and a coaxial cavity resonator are coupled, and each coaxial cavity resonator respectively first coaxial cavity resonator of the filter by two windows and two different frequency ranges be coupled, each filter and a corresponding connection of branch road port close line structure with this two-stage that constitutes the six directions one or one minute six.Utilize this programme can be CDMA, GSM in future China's mobile communication with 3G and be in the same place.
The foregoing description only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the personage who is familiar with this top technology can understand content of the present utility model and enforcement according to this, can not limit protection range of the present utility model with this.All equivalences of being done according to the utility model spirit change or modify, and all should be encompassed within the protection range of the present utility model.
Claims (10)
1, a kind of mobile communication multi-band signal mixer, be provided with a branch road port that closes road port [G] and corresponding one by one each frequency range, from closing road port [G], be divided at least two branch lines with transmission line [1], it is characterized in that: an every branch line and a coaxial cavity resonator [2] are coupled, and each coaxial cavity resonator [2] is coupled by mutual window with first resonator of a filter [3] at least, described filter [3] is a coaxial cavity filter, each filter [3] and a corresponding connection of branch road port constitute All-in-One or the two-stage more than a minute is closed line structure with this.
2, mobile communication multi-band signal mixer according to claim 1, it is characterized in that: described branch line is the transmission line with a segment length and impedance, this transmission line is made of jointly the wall of wire or metal bar and metallic cavity.
3, mobile communication multi-band signal mixer according to claim 1, it is characterized in that: described branch line and coaxial cavity resonator [2] are coupled, be that wire or metal bar are directly connected to certain position on the stub in the coaxial cavity resonator [2], or adopt forms such as probe, loop structure.
4, according to claim 1 or 3 described mobile communication multi-band signal mixers, it is characterized in that: the resonance frequency of described each coaxial cavity resonator [2] is associated with the band connection frequency of the multiband that is coupled respectively, the ordering of each frequency range is: the branch road port of shared same coaxial cavity resonator [2], it is best adopting successive bands.
5, mobile communication multi-band signal mixer according to claim 1, it is characterized in that: road port had four in described minute, from closing road port [G], be divided into two branch lines with transmission line [1], an every branch line and a coaxial cavity resonator [2] are coupled, and each coaxial cavity resonator [2] respectively first coaxial cavity resonator of the filter [3] by two windows and two different frequency ranges be coupled, close line structure with this two-stage that constitutes four unifications or one minute four.
6, mobile communication multi-band signal mixer according to claim 1, it is characterized in that: road port had two in described minute, from closing road port [G], be divided into two branch lines with transmission line [1], an every branch line and a coaxial cavity resonator [2] are coupled, and each coaxial cavity resonator [2] respectively first coaxial cavity resonator of the filter [3] by two windows and two different frequency ranges be coupled, be coupled with a branch line respectively again with last coaxial cavity resonator with the filter [3] of two different frequency ranges of a coaxial cavity resonator [2], these two branch lines combine again with a branch road port and link, and close line structure with this two-stage that constitutes two-in-one or one-to-two.
7, mobile communication multi-band signal mixer according to claim 1, it is characterized in that: road port had six in described minute, from closing road port [G], be divided into three branch lines with transmission line [1], an every branch line and a coaxial cavity resonator [2] are coupled, and each coaxial cavity resonator [2] respectively first coaxial cavity resonator of the filter [3] by two windows and two different frequency ranges be coupled, close line structure with this two-stage that constitutes the six directions one or one minute six.
8, mobile communication multi-band signal mixer according to claim 5, it is characterized in that: the filter of first fen road port correspondence is CDMA Rx (825-835MHz) frequency range, the filter of second fen road port correspondence is CDMA Tx (870-880MHz) frequency range, the filter of the 3rd fen road port correspondence is GSM Rx (890-915MHz) frequency range, and the filter of the 4th fen road port correspondence is GSM Tx (935-960MHz) frequency range.
9, mobile communication multi-band signal mixer according to claim 6, it is characterized in that: two CDMA ports are combined into a common CDMA port by T type structure, two GSM ports also are combined into a common GSM port by T type structure, a common CDMA port is connected two branch road ports respectively with a common GSM port.
10, it is characterized in that according to the described mobile communication multi-band signal of claim mixer: the filter of first fen road port correspondence is CDMA x (825-835MHz) frequency range, the filter of second fen port correspondence is CDMA Tx (870-880MHz) frequency range, the filter of the 3rd fen road port correspondence is GSM Rx (890-915MHz) frequency range, the filter of the 4th fen road port correspondence is GSM Tx (935-960MHz) frequency range, the filter of the 5th fen road port correspondence is 3G Rx (1920-1980MHz) frequency range, and the filter of the 6th fen road port correspondence is 3G Tx (2110-2170MHz) frequency range.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN03219292U CN2595111Y (en) | 2003-01-09 | 2003-01-09 | Multiple frequency channel signal synthesizer for mobile communication |
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| CN03219292U CN2595111Y (en) | 2003-01-09 | 2003-01-09 | Multiple frequency channel signal synthesizer for mobile communication |
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| CN2595111Y true CN2595111Y (en) | 2003-12-24 |
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| CN03219292U Expired - Fee Related CN2595111Y (en) | 2003-01-09 | 2003-01-09 | Multiple frequency channel signal synthesizer for mobile communication |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008110041A1 (en) * | 2007-03-12 | 2008-09-18 | Comba Telecom System (China) Ltd. | An ultra wide band double frequency combiner |
| WO2008110040A1 (en) * | 2007-03-12 | 2008-09-18 | Comba Telecom System (China) Ltd. | Double frequency combiner |
| CN104852108A (en) * | 2015-04-29 | 2015-08-19 | 上海华为技术有限公司 | Input and output device for multiplexers and multiplexer |
| CN106876832A (en) * | 2017-03-31 | 2017-06-20 | 安徽四创电子股份有限公司 | A kind of broadband millimeter-wave section waveguide multiplexer based on waveguide magic T |
-
2003
- 2003-01-09 CN CN03219292U patent/CN2595111Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008110041A1 (en) * | 2007-03-12 | 2008-09-18 | Comba Telecom System (China) Ltd. | An ultra wide band double frequency combiner |
| WO2008110040A1 (en) * | 2007-03-12 | 2008-09-18 | Comba Telecom System (China) Ltd. | Double frequency combiner |
| CN101267220B (en) * | 2007-03-12 | 2011-07-27 | 京信通信系统（中国）有限公司 | Dual-frequency multiplexer |
| CN101267219B (en) * | 2007-03-12 | 2011-10-26 | 京信通信系统（中国）有限公司 | Ultra-broadband dual-frequency channel merger |
| US8299872B2 (en) | 2007-03-12 | 2012-10-30 | Comba Telecom System (China) Ltd. | Ultra wide-band dual-frequency combiner |
| US8306067B2 (en) | 2007-03-12 | 2012-11-06 | Comba Telecom System (China) Ltd. | Dual-frequency multiplexer |
| CN104852108A (en) * | 2015-04-29 | 2015-08-19 | 上海华为技术有限公司 | Input and output device for multiplexers and multiplexer |
| WO2016173321A1 (en) * | 2015-04-29 | 2016-11-03 | 华为技术有限公司 | Input-output device for multiplexer and multiplexer |
| CN104852108B (en) * | 2015-04-29 | 2018-10-19 | 上海华为技术有限公司 | A kind of input/output unit and multiplexer of multiplexer |
| CN109301413A (en) * | 2015-04-29 | 2019-02-01 | 上海华为技术有限公司 | A kind of input/output unit and multiplexer of multiplexer |
| US10530326B2 (en) | 2015-04-29 | 2020-01-07 | Huawei Technologies Co., Ltd. | Input/output apparatus of multiplexer, and multiplexer |
| US10917066B2 (en) | 2015-04-29 | 2021-02-09 | Huawei Technologies Co., Ltd. | Input/output apparatus of multiplexer, and multiplexer |
| EP3280001B1 (en) * | 2015-04-29 | 2021-10-13 | Huawei Technologies Co., Ltd. | Input-output device for multiplexer and multiplexer |
| CN106876832A (en) * | 2017-03-31 | 2017-06-20 | 安徽四创电子股份有限公司 | A kind of broadband millimeter-wave section waveguide multiplexer based on waveguide magic T |
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