CN201117771Y - Low loss high selectivity clutter suppression -type base station double duplex device - Google Patents
Low loss high selectivity clutter suppression -type base station double duplex device Download PDFInfo
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- CN201117771Y CN201117771Y CNU2007200447063U CN200720044706U CN201117771Y CN 201117771 Y CN201117771 Y CN 201117771Y CN U2007200447063 U CNU2007200447063 U CN U2007200447063U CN 200720044706 U CN200720044706 U CN 200720044706U CN 201117771 Y CN201117771 Y CN 201117771Y
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Abstract
A low wastage high selectivity clutter-inhibitable type base station double duplexer consists of two symmetrical duplexers with same structures. The duplexer includes a body, a cover plate, inner conductors of resonance cavities, resonance frequency adjusting bolts, adjusting bolts for the coupling intensity between cavities, an input interface and an output interface. The body of the duplexer is provided with a low-pass filtering resonance cavity parallel with the receiving ends of parallel rectangle cavities; the parallel rectangle cavities are respectively arranged at two ends of the body of the duplexer; low-pass inner conductors are arranged in the cavities; one ends of the low-pass conductors are connected with the inner conductors of the resonance cavities of the receiving ends; the other ends are connected with the input and the output interfaces of the receiving ends. The double duplexer has the advantages of simple, compact and skillful structure as well as small size; besides, the double duplexers of the double duplexer can better restrain the interference and scattering as well as radiating coming from the outside of the working frequency band. The utility model has excellent performances, high reliability and broad usage; a series of multi-cavity filters can be designed. The utility model provides an ideal key double duplexer apparatus for wireless communication engineering.
Description
Technical field
The utility model relates to a kind of base station multiplexer in pairs, and particularly a kind of low loss high selectivity clutter inhibition type base station is multiplexer in pairs, is applicable to the base station equipment of radio communication field radio signal transmission.
Background technology
In all kinds of Wireless Telecom Equipments of modern times, for example GSM/CDMA/PCS/DCS mobile communication high-power wireless base station, Digital Clustering high-power wireless base station etc. all need a kind of can by high-power, have high selectivity energy, loss as far as possible little, have that clutter suppresses, the duplexer technology of amphiorentation coupling, and based on the various critical components of this art designs.But, with regard to present technical merit, can pass through powerful multiplexer in pairs for one, at first, just there are many technological difficulties in the filter of drain performance that wants to obtain simultaneously and high selection performance, because a pair of more formidable contradiction on low-loss and the high selectivity.Existing TEM film multicavity filter has two kinds of versions commonly used: the multicavity filter of distributed couplings and the adjustable multicavity filter of centralized coupling.The former generally in the main body that conventional cast processes the broach shape insert a plurality of inner wires, be formed centrally a plurality of rectangular cavities in inner wire being, screw in the resonance frequency adjustment screw relative from the cavity opposite side with inner wire, the filter two ends have end plate, and input and output connector joins with filter two ends cavity respectively.This Filter Design is ripe with manufacturing, it is also less to insert loss, the problem that exists is the Fixed Design that is coupled as between the adjacent resonators, passband width is non-adjustable, be unfavorable for the design and the manufacturing of many kinds series of products, and when passband width required constriction, the distributed couplings district extended thereupon, increased the volume of filter.The latter mostly is that rotary-cut processes a plurality of cylindrical cavities (or rectangular cavity) in the bulk metal piece, also has inner wire and resonance frequency adjustment screw, has intercommunicating pore between the adjacent resonators, in connection place, regulates the coupling amount between the resonant cavity by the extrapolation screw rod.The major advantage of this filter is that after product was made, performances such as ripple, input and output standing-wave ratio fully be adjusted to and reach satisfactory result in can and being with passband width.The problem that exists is that screw device is relatively more clumsy, and the insertion loss is also bigger, and under the more situation of resonant cavity requirement, difficulty of processing increases, and technological debugging work is quite loaded down with trivial details, complicated, time-consuming.Since the last century the nineties, in land mobile communication system and digital clustering communication system, generally adopt the adjustable multicavity filter of a kind of centralized coupling (Motorola Inc., Ericsson, Korea S KMW Inc. all adopt this filter product), in the main body of bulk metal piece, process a plurality of rectangles or cylindrical coaxial cavity that honeycomb fashion is arranged, cylindrical inner conductor is installed in the chamber, must from body portion from upper cover plate screw in the resonance frequency adjustment screw corresponding with inner wire, increased the difficulty of Installation and Debugging.The filter of this structure mainly relies on the cross section that enlarges coaxial cavity, improve the precision of machining and plating measures such as (for example electroplates) is carried out on the surface reduced its loss, improve its optionally approach mainly be reasonable arrangement between the chamber, and increase the separate space coupled structure and realize the separate space coupling.Its shortcoming mainly is a high material consumption, and the processing technology complexity requires height, and difficulty is big, and production efficiency is low, and the production cost height is difficult to produce in enormous quantities, can not adapt to the requirement of communication technology fast development.Secondly, low-pass filtering is not with in common transmitting-receiving multiplexer in pairs, to the interference outside the working frequency range with spuiously penetrate radiation and can't suppress; Moreover common transmitting-receiving multiplexer in pairs can't be received and dispatched transmission signals to antenna end and detect not with the amphiorentation coupling circuit of sampled functions.
Summary of the invention
Problem to be solved in the utility model is, the duplexer that overcomes aforementioned body and be parallel rectangle cavity structure is difficult to take into account low drain performance and high selection performance, and a kind of novel structure and can be by powerful low loss high selectivity clutter inhibition type base station multiplexer in pairs is provided.
The technical scheme that its technical problem that solves the utility model adopts is as follows: low loss high selectivity clutter inhibition type base station is multiplexer in pairs, it is made up of two identical duplexer symmetries of structure, described duplexer comprises the main body of being made up of parallel rectangular cavity, cover plate, the resonant cavity inner wire, the resonance frequency adjustment screw, stiffness of coupling adjustment screw between the chamber, input/output interface, it is characterized in that: have the sending and receiving end low-pass filtering resonant cavity that parallels with parallel rectangular cavity in the duplexer main body, described sending and receiving end low-pass filtering resonant cavity lays respectively at duplexer main body two ends, the chamber is built-in with the low pass inner wire, low pass inner wire one end connects the resonant cavity inner wire of sending and receiving end, and the other end connects the input/output interface of sending and receiving end.
The further feature of the utility model is: also have the transmission channel chamber that parallels with parallel rectangular cavity in the main body of two of multiplexer duplexers in pairs, has main transmission inner wire in the chamber, be equipped with the two piece sampling cables parallel directly over this master's transmission inner wire successively with main transmission inner wire, described sampling cable one end connects the coupling absorbing load, the other end connects the input output interface, the main body upper surface has amphiorentation coupling circuit plate embedded groove, and this trench bottom has the receiving and transmitting signal sampling delivery outlet that is communicated with the transmission channel chamber.
The beneficial effects of the utility model are as follows: multiplexer is simple in structure, compact, ingenious in pairs for this, and volume is little, and its two duplexers all are with low-pass filtering, can be good at suppressing interference and stray radiation outside the working frequency range; Band sample circuit and amphiorentation coupling circuit can be received and dispatched transmission signals coupling sampling to antenna end and detect, and in time report to the police when the antenna end standing-wave ratio worsens, with the maintain communications quality of signals; The structure that parallel rectangular cavity parallels in low-pass filtering resonant cavity and transmission channel chamber and the main body, the duplexer main body can be produced in enormous quantities by ripe aluminum extrusion process, and processing technology is simple, and the multiplexer in pairs of same type only need be opened a kind of mould, number of molds is few, thoroughly change the processing technology of traditional centralized coupling duplexer, and product repetition high conformity, do not need coating surface, save raw material, the production efficiency height, production cost is low, adapts to the requirement of communication technology fast development; The utility model is the multiplexer superior performance in pairs; production cost can reduce by 80%; of many uses; be easy to realize the large-scale production of many kinds; can design serial multi-cavity duplexer; with it is the transmitting-receiving multiplexer etc. in pairs that mobile communication, microwave radio relay communication, digital cluster communication and wireless access base station can be designed in the basis, for wireless communication engineering provides a kind of desirable core duplexer device.
Description of drawings
Fig. 1 is the utility model low loss high selectivity clutter inhibition type base station multiplexer master TV structure figure in pairs.
Fig. 2 for the utility model low loss high selectivity clutter inhibition type base station in pairs multiplexer remove face upwarding assumption diagram behind the lower cover.
Fig. 3 is the A-A cutaway view of Fig. 2.
Number in the figure is schematically as follows: 1-duplexer, 2-duplexer, 11-main body, the 12-cover plate, 13-resonant cavity inner wire, 14-input/output interface, the 15-input/output interface, 16-resonance frequency adjustment screw, 18-open circuit separate space coupling device, stiffness of coupling adjustment screw between the 19-chamber, 21-low-pass filtering resonant cavity, 22-low-pass filtering resonant cavity, 23-low-pass filtering resonant cavity, 211-low pass inner wire, 221-low pass inner wire, the resonant cavity inner wire of 131-sending and receiving end, the resonant cavity inner wire of 132-sending and receiving end, 31-cable link slot, 4-transmission channel chamber, 41-master is transmitted inner wire, the 42-cable of taking a sample, 44-input output interface, 45-input output interface, 5-amphiorentation coupling circuit plate embedded groove, 51-receiving and transmitting signal sampling delivery outlet, 6-trip bolt, 7-antenna opening.
Embodiment
With reference to the accompanying drawings and in conjunction with the embodiments the utility model is described in further detail.But the utility model is not limited to given example.
As Fig. 1, Fig. 2, shown in Figure 3, the utility model low loss high selectivity clutter inhibition type base station is multiplexer in pairs, it is by two duplexers 1 that structure is identical, 2 symmetries are formed, duplexer 1 with left side in the front view is an example, this duplexer 1 comprises the main body of being made up of parallel rectangular cavity 11, cover plate 12, resonant cavity inner wire 13, resonance frequency adjustment screw 16, stiffness of coupling adjustment screw 19 between the chamber, input/ output interface 14,15, has the sending and receiving end low-pass filtering resonant cavity 21 that parallels with parallel rectangular cavity in duplexer 1 main body 11,22, described sending and receiving end low-pass filtering resonant cavity 21,22 lay respectively at duplexer 1 main body 11 two ends, be equipped with low pass inner wire 211 in the chamber respectively, 221, low pass inner wire 211,221 1 ends connect the resonant cavity inner wire 131 of sending and receiving end respectively, 132, the other end connects the input/output interface 14 of sending and receiving end respectively, 15.Among Fig. 1,7 is antenna opening, and 18 are open circuit separate space coupling device.The structure of duplexer 2 is identical with the structure of duplexer 1, and symmetric arrangement.
Be example still, as shown in Figure 2, have the cable parallel in the main body of duplexer 1 and turn to channel lumens 3 that the low-pass filtering resonant cavity 21 that is positioned at the outside turns to the adjacent port of channel lumens 3 to have cable link slot 31 with cable with the low-pass filtering resonant cavity with duplexer 1.
As Fig. 2, shown in 3, in the present embodiment, also has the transmission channel chamber 4 that parallels with parallel rectangular cavity in the main body of duplexer 1, has main transmission inner wire 41 in the chamber, be equipped with the two piece sampling cables parallel directly over this master's transmission inner wire 41 successively with main transmission inner wire, wherein one label is 42, one end of this sampling cable 42 connects coupling absorbing load (not drawing among the figure), the other end connects input output interface 44, do not draw in another root sampling cable map, it is that 42 sampling cable connected mode is consistent with label, its end connects the coupling absorbing load, the other end connects input output interface 45, and main body 11 upper surfaces have amphiorentation coupling circuit plate embedded groove 5, and this trench bottom has the receiving and transmitting signal sampling delivery outlet 51 that is communicated with transmission channel chamber 4.
In the present embodiment, the transmission channel chamber 4 of duplexer 1 is positioned at the centre of duplexer 1 main body 11, and amphiorentation coupling circuit plate embedded groove 5 is positioned in the middle of the upper surface of duplexer main body 11; Has cover plate (not drawing among the figure) on the amphiorentation coupling circuit plate embedded groove 5 in duplexer 1 main body 11.
The structure of duplexer 1,2 is identical, in the present embodiment only the structure to duplexer 1 be described in detail, the structure of duplexer 2 can be with reference to originally being example.
Among the embodiment as shown in Figure 2, the transmitting-receiving low-pass filtering resonant cavity 22,23 of duplexer 1,2 adjacents is arranged up and down; As shown in Figure 1, be connected to one by trip bolt 6 between the duplexer 1,2.
Claims (7)
1, low loss high selectivity clutter inhibition type base station is multiplexer in pairs, it is made up of two identical duplexer symmetries of structure, described duplexer comprises the main body of being made up of parallel rectangular cavity, cover plate, the resonant cavity inner wire, the resonance frequency adjustment screw, stiffness of coupling adjustment screw between the chamber, input/output interface, it is characterized in that: have the sending and receiving end low-pass filtering resonant cavity that parallels with parallel rectangular cavity in the duplexer main body, described sending and receiving end low-pass filtering resonant cavity lays respectively at duplexer main body two ends, the chamber is built-in with the low pass inner wire, low pass inner wire one end connects the resonant cavity inner wire of sending and receiving end, and the other end connects the input/output interface of sending and receiving end.
2, low loss high selectivity clutter inhibition type according to claim 1 base station multiplexer in pairs, it is characterized in that having the cable parallel with the low-pass filtering resonant cavity in the main body of described duplexer turns to channel lumens, be positioned at the low-pass filtering resonant cavity in the outside and adjacent port that cable turns to channel lumens and have the cable link slot.
3, low loss high selectivity clutter inhibition type according to claim 1 and 2 base station is multiplexer in pairs, it is characterized in that also having the transmission channel chamber that parallels with parallel rectangular cavity in the main body of described duplexer, has main transmission inner wire in the chamber, be equipped with the two piece sampling cables parallel directly over this master's transmission inner wire successively with main transmission inner wire, described sampling cable one end connects the coupling absorbing load, the other end connects the input output interface, the main body upper surface has amphiorentation coupling circuit plate embedded groove, and this trench bottom has the receiving and transmitting signal sampling delivery outlet that is communicated with the transmission channel chamber.
4, low loss high selectivity clutter inhibition type according to claim 3 base station multiplexer in pairs, it is characterized in that the transmission channel chamber of described duplexer is positioned at the centre of duplexer main body, amphiorentation coupling circuit plate embedded groove is positioned in the middle of the upper surface of duplexer main body.
5, low loss high selectivity clutter inhibition type according to claim 4 base station multiplexer in pairs is characterized in that having cover plate on the amphiorentation coupling circuit plate embedded groove in described duplexer main body.
6, low loss high selectivity clutter inhibition type according to claim 3 base station multiplexer in pairs, it is characterized in that: the transmitting-receiving low-pass filtering resonant cavity that is positioned at described two duplexer adjacents is arranged up and down.
7, low loss high selectivity clutter inhibition type according to claim 3 base station multiplexer in pairs is characterized in that: be connected to one by trip bolt between described two duplexers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200447063U CN201117771Y (en) | 2007-11-09 | 2007-11-09 | Low loss high selectivity clutter suppression -type base station double duplex device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200447063U CN201117771Y (en) | 2007-11-09 | 2007-11-09 | Low loss high selectivity clutter suppression -type base station double duplex device |
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| CN201117771Y true CN201117771Y (en) | 2008-09-17 |
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| CNU2007200447063U Expired - Fee Related CN201117771Y (en) | 2007-11-09 | 2007-11-09 | Low loss high selectivity clutter suppression -type base station double duplex device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102136618A (en) * | 2010-12-01 | 2011-07-27 | 丹东华欣电子科技有限公司 | Odd harmonic suppression type spiral cavity filter |
| CN103491656A (en) * | 2013-08-20 | 2014-01-01 | 华为技术有限公司 | Base station and duplexor thereof |
| CN109066026A (en) * | 2018-07-05 | 2018-12-21 | 南京信息工程大学 | A kind of Ka band dual channel duplexer suitable for multi-antenna array |
| CN112909463A (en) * | 2021-01-18 | 2021-06-04 | 南京锦锋通讯科技有限公司 | Low-loss high-selectivity clutter suppression type base station duplexer |
-
2007
- 2007-11-09 CN CNU2007200447063U patent/CN201117771Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102136618A (en) * | 2010-12-01 | 2011-07-27 | 丹东华欣电子科技有限公司 | Odd harmonic suppression type spiral cavity filter |
| CN103491656A (en) * | 2013-08-20 | 2014-01-01 | 华为技术有限公司 | Base station and duplexor thereof |
| CN103491656B (en) * | 2013-08-20 | 2017-06-06 | 华为技术有限公司 | Base station and its duplexer |
| CN109066026A (en) * | 2018-07-05 | 2018-12-21 | 南京信息工程大学 | A kind of Ka band dual channel duplexer suitable for multi-antenna array |
| CN109066026B (en) * | 2018-07-05 | 2023-08-15 | 南京信息工程大学 | Ka-band double-channel duplexer applicable to multi-antenna array |
| CN112909463A (en) * | 2021-01-18 | 2021-06-04 | 南京锦锋通讯科技有限公司 | Low-loss high-selectivity clutter suppression type base station duplexer |
| CN112909463B (en) * | 2021-01-18 | 2023-01-06 | 南京锦锋通讯科技有限公司 | Low-loss high-selectivity clutter suppression type base station duplexer |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080917 Termination date: 20131109 |