CN201266928Y - Multi-system access platform and composite apparatus for multi-frequency-band whole path and branch path thereof - Google Patents
Multi-system access platform and composite apparatus for multi-frequency-band whole path and branch path thereof Download PDFInfo
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- CN201266928Y CN201266928Y CNU2008200515741U CN200820051574U CN201266928Y CN 201266928 Y CN201266928 Y CN 201266928Y CN U2008200515741 U CNU2008200515741 U CN U2008200515741U CN 200820051574 U CN200820051574 U CN 200820051574U CN 201266928 Y CN201266928 Y CN 201266928Y
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Abstract
The utility model discloses a multiband combiner and shunt composite device, including: a base station interface unit, isolation units and a combiner and shunt multiplexing unit. The base station interface unit is provided with at least two interfaces, and each interface carries out signal interaction of one frequency band with a base station; the number of the isolation units corresponds to that of the interfaces of the base station interface unit, and each isolation unit manufactures insertion loss for a signal input into the interface or output from the interface so as to improve the isolation; and the combiner and shunt multiplexing unit combines multi-way signals output by the isolation units and distributes the signals into at least one way which is output to an antenna feed system when descending, and shunts at least one way of signal from the antenna feed system and outputs the signal to all the isolation units when ascending. Each isolation unit includes at least one circulator, and time-phase cascade of a plurality of circulators can produce different insertion loss requirements. In a multisystem access platform, the multiband combiner and shunt composite device not only guarantees high isolation of the signals of two adjacent frequency bands, and enhances the quality of signal transmission, but also simplifies and saves complex components in the traditional technology, thus reducing the cost.
Description
[technical field]
The utility model relates to a kind of path combining technique of communication system, relates in particular to a kind of multi-system access platform and the multiband that adopted closes the road multiplexer composite device.
[technical background]
Multi-system access platform (POI, Points Of Interface) is one of catenet central apparatus of covering engineering, close the road by system signal, and the signal that will close behind the road introduced the antenna feeder compartment system multiple business, reach and make full use of resource, the purpose of reducing investment outlay.
There are two kinds of application forms in the use of multi-system access platform at present: a kind of is that miscellaneous service system full frequency band is used, and for example a port is the DCS band downlink, and its frequency is 1805-1880MHz; Another kind of application form is the many Application of Interface of operation system frequency-division section, the planning frequency range that is about to operation system is divided into a plurality of frequency sub-band, come connecting system with many interfaces, for example the frequency of DCS band downlink is 1805-1880MHz, requirement is divided into three ports and uses, its frequency is respectively 1805-1825.5MHz, 1834.5-1854.7MHz, 1854.9-1874.9MHz.
The isolation that often can only utilize less frequency interval to make high device that suppresses and use coupled apparatus for two adjacent frequency sub-band (frequency sub-band that comprises systems organization frequency range and planning frequency range) in these two kinds of application forms reaches the isolation that improves two adjacent frequency ranges, the insertion loss of system has significantly like this increases, but and only use coupled apparatus to isolate not reach the high requirement of isolating; For the up radio frequency part of multi-system access platform, often because not matching of electric bridge causes the standing wave variation, it is big that passband fluctuation becomes simultaneously.
Thus, especially for the situation that same communication system is divided a plurality of adjacent frequency sub-band, its path combining technique has the space of improvement.
[utility model content]
For this reason, the purpose of this utility model will overcome above-mentioned deficiency exactly, provides a kind of multi-system access platform and the multiband that adopted closes the road multiplexer composite device, for the especially adjacent a plurality of frequency ranges of a plurality of frequency ranges provide the preferable road effect of closing.
For realizing this purpose, the utility model adopts following technical scheme:
A kind of multiband of the utility model closes the road multiplexer composite device, finishes the different frequency range signal of different communication systems in multi-system access platform, and/or the signal of a plurality of frequency sub-band of same communication system descending close road or up shunt, comprising:
Base station Interface Unit provides at least two interfaces, and it is mutual that the signal of a frequency range is carried out in each interface and base station;
Isolated location, its number is corresponding with the interface number of described Base station Interface Unit, and each isolated location is one to be imported described interface or inserts loss from the signal manufacturing of this interface output, to improve the isolation between the different frequency range signal;
The co-shunt Multiplexing Unit closes the signal of each isolated location output the road and is distributed at least one road when descending and exports antenna-feedback system to, and the signal that will come at least when up from antenna-feedback system exports described each isolated location along separate routes to.
Preferable, the insertion loss value difference of different isolated location manufacturings.
Depend on actual need and decide, each isolated location comprises at least one circulator, and the phase cascade can produce different insertion loss needs during a plurality of circulator.
Each embodiment discloses according to the utility model, can have following situation:
1, only used the wherein single worker's function of straight-through port realization transmitting-receiving of circulator at least one isolated location.
2, only having used wherein at least one isolated location, the isolated port of circulator realizes the single worker's function of transmitting-receiving.
3, using wherein at least one isolated location simultaneously, the straight-through port and the isolated port of circulator realize the transmission duplex function.
When the signal of described different frequency range belonged to the adjacent different frequency sub-band of a communication system together, effect of the present utility model was particularly evident.
Preferable, described co-shunt Multiplexing Unit adopts quadrature bridge.In addition, electrically connect by an interface in a filter unit and the relevant base station interface unit at an isolated location, the filtered unit of signal of being to and from filter unit carries out Filtering Processing.
A kind of multi-system access platform of the utility model has adopted above-mentioned multiband to close the road multiplexer composite device.
Compared with prior art, the utility model possesses following advantage: at first, adopt circulator as isolated location, can change the insertion loss value of each frequency range, thereby the isolation between each frequency range is improved, and can regulate because of need; Secondly,, can improve the performance index of signal, reduce the usage quantity of passive devices such as electric bridge, load simultaneously, cost is reduced greatly because structure of the present utility model is simplified greatly.
[description of drawings]
Fig. 1 has used the multi-system access platform simple schematic diagram that multiband closes the road multiplexer composite device;
Fig. 2 closes the principle schematic of road multiplexer composite device for the utility model multiband.
[embodiment]
Below in conjunction with drawings and Examples the utility model is further described:
The utility model multiband closes the road multiplexer composite device, is applied in the multi-system access platform shown in Figure 1, and the multi-system access platform of Fig. 1 shows its Base station Interface Unit 1, isolated location 2, co-shunt Multiplexing Unit 3 and antenna feeder interface unit 4.
Wherein, Base station Interface Unit 1 includes a plurality of being connected with the base station for carrying out the mutual interface Port 1～n of a plurality of communication system signals, each interface Port 1～n is used for the full frequency band of a communication system, a frequency sub-band that perhaps is used for a communication system, frequency range between a plurality of interfaces can differently can be determined on a case-by-case basis together.
A plurality of isolated locations 2, two (being labeled as 21 and 22) are arranged as shown in Figure 2, each isolated location 2 includes at least one or one group (when having two above circulator cascades) circulator (21,22), one or one group of circulator 21,22 and base-station interface Port1, Port2 is connected, to being to and from this maybe signal of communication manufacturing insertion loss of this group circulator 21,22, the distinct interface Port1 so that flow through, the isolation between the signal of the different frequency range of Port2 is improved.Under the good situation of coupling, any forward path has the insertion loss value of about-20dB in the single circulator 21 or 22 when reverse transmission.Utilize this character, insert one or one group of circulator 21,22 after, isolation improves about 20dB to I haven't seen you for ages between adjacent two frequency ranges.When using one group of circulator at 21,22 o'clock, i.e. during at least two circulator 21,22 cascades, then can make isolation is that several times are improved on the basis with 20dB.Known, the isolated location 2 that cascade circulator 21,22 is formed has a plurality of ports, utilizes independent respectively use of heterogeneity of its straight-through port and isolated port, perhaps while and usefulness can be applied to receive and dispatch under the application form of multiple multi-system access platforms such as single worker, transmission duplex.These modes are more common in known technology, and those skilled in the art all know it, and how flexible combination is to form various transmission means.
Co-shunt Multiplexing Unit 3 shown in Figure 1, it is when signal downlink, the signal that a plurality of isolated locations 2 that belong to different full frequency bands or different frequency sub-band (consult Fig. 2 21 and 22) transmission is come closes the road, and it is distributed into the identical composite signal of multichannel exports antenna feeder interface unit 4 to; During signal uplink, be dispensed to a plurality of isolated locations 2 after then the signal of a plurality of interface ANT 1～n of antenna feeder interface unit 4 being closed the road.So, in signal uplink with when descending, co-shunt Multiplexing Unit 3 is all finished the effect that signal is synthetic and redistribute.
As shown in Figure 1, antenna feeder interface unit 4 provides a plurality of interface ANT1～n that are connected with antenna-feedback system, and the output when each interface ANT 1～n is descending with the forward of described co-shunt Multiplexing Unit 3 when up (reverse input) is connected.
With Fig. 2 is example, wherein Port1 and Port2 are respectively two interfaces of described Base station Interface Unit 1, two links of drawing thus are respectively applied for the signal of two frequency ranges of transmission, these two frequency ranges both can be the full frequency band signals of two different communication systems, also can be two sub-frequency band signals in the same communication system.
Being right after and holding what be connected with interface Port1 end and Port2 is two filters 51,52, the signal to affiliated link carries out Filtering Processing separately, and processed signal comprises forward signal, promptly by the downstream signal of base station output, a general signal only comprises a frequency range; Also comprise reverse signal, also promptly by the antenna-feedback system filter 51 of flowing through, 52 enter signal of base station, this reverse signal comprises the downstream signal from other base stations that antenna-feedback system receives, the downstream signal of level reflection and from the upward signal of travelling carriage behind the covering system, after processing such as co-shunt Multiplexing Unit 3 grades, generally be compound downstream signal and the upward signal that has comprised a plurality of frequency ranges, via circulator 21, after 22 processing, if in single worker's downlink system, reverse signal major part is absorbed by load by the isolated port of circulator, the reverse signal of fraction has increased under the effect of circulator-the insertion loss of 20dB in addition, and filtered device 51,52 filters out the outer signal of passband respectively.Signal in the passband, it also is the reflected signal of forward signal and from the downstream signal in the passband of other base stations, all enter the base station that filter 51,52 connects, these get back to the echo-signal that signal of base station can be considered forward signal, because at circulator 21, increased under 22 the effect-the insertion loss of 20dB, so echo-signal does not have circulator 21,22 o'clock more weak, therefore this set composite can play the adjustment standing wave, the effect of protection base station; If in single worker's up-link, principle is Fig. 2 equally, but the circulator 21 in the direction of circulator 21,22 and single worker's the downlink system, 22 directions are opposite, reverse signal is the signal of filter 51,52 and prime reflection, and this reverse signal is most of by circulator 21 equally, 22 isolated port is absorbed by load, fraction becomes the echo-signal of forward upward signal, and this moment, this set composite played the adjustment standing wave, the effect of coupling quadrature bridge.In duplex system, filter 51,52 all changes duplexer into, and isolated location 21,22 all is that one group of circulator (every group has two circulator cascades at least) cascade forms, and the road port that closes of duplexer connects the base station as base-station interface.Because filter 51,52 change duplexer into, and isolated location must have two circulators 21 at least, 22, increased the quantity of interface like this, make between two ports of circulator 21,22 and duplexer up-downgoing type of attachment can because of radio-frequency (RF) index require different and different, but the transmission principle of its up-downgoing and simplex system principle recited above are essentially identical.
Be right after and with two filters 51,52 what electrically connect respectively is two circulators 21,22, circulator 21 in the same link of drawing by same base-station interface, 22 numbers are not limited to by Fig. 2, can be by a plurality of circulators 21,22 carry out cascade, as previously mentioned, circulator 21,22 can cause the insertion loss of the signal of the link under it, by adjusting circulator 21,22 number can be made different insertion loss value, thereby the isolation of two links of being drawn by Port1 and Port2 among Fig. 2 is improved.
What be right after and electrically connect with two circulators 21,22 is co-shunt Multiplexing Unit 3, adopts quadrature bridge 3 to realize among Fig. 2.During signal downlink, after quadrature bridge 3 will close the road from base station and the downstream signal of importing the two-way different frequency range in it, export two the interface ANT1 and the ANT2 of described antenna feeder interface unit 4 to through two output; During signal uplink, be dispensed in described two links after then the upward signal of antenna feeder interface unit 4 being closed the road, until two interface Port1 that transfer to Base station Interface Unit 1 and Port2.When having a plurality of communication systems or having a plurality of frequency sub-band of same communication system, when perhaps mixing a plurality of frequency range of a plurality of systems, a plurality of frequency ranges of drawing from different base station interface Port 1～n will be had, form a plurality of links, at this moment, can adopt a plurality of quadrature bridge 3 mode with cascade in parallel that the signal of a plurality of frequency ranges of a plurality of links is closed the road.Those of ordinary skills all know this improvement.
Among Fig. 2, for downstream signal, the signal of two-way different frequency range is inputed to behind two links by two filters 51,52 carry out filtering respectively, more respectively after two circulators 21,22 insert the loss adjustment, improved isolation each other, close each interface that the road is redistributed to antenna feeder interface unit 4 through co-shunt Multiplexing Unit 3 then,, finish the covering of downstream signal for being emitted to antenna-feedback system.
And for upward signal, the signal of travelling carriage (as mobile phone) is after antenna-feedback system is handled, transfer in each interface of described antenna feeder interface unit 4, by co-shunt Multiplexing Unit 3 it is dispensed to each again and has circulator 21, in 22 the link, by each circulator 21, after loss value is inserted in 22 adjustment, improved isolation each other, transfer to corresponding filter 51 more respectively, 52 carry out filtering, and the signal of gating special frequency channel transfers to each interface of Base station Interface Unit 1, finally transfers to the base station.
In sum, in multi-system access platform, multiband of the present utility model closes the high-isolation that the road multiplexer composite device had both guaranteed the signal of adjacent two frequency ranges, and signal transmission quality is improved, letter has economized the complex component in the conventional art again, and cost is minimized greatly.
The foregoing description is the utility model preferred implementation; but execution mode of the present utility model not merely is restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present utility model and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within the protection range of the present utility model.
Claims (8)
1, a kind of multiband closes the road multiplexer composite device, finishes the different frequency range signal of different communication systems in multi-system access platform, and/or the signal of a plurality of frequency sub-band of same communication system descending close road or up shunt, it is characterized in that comprising:
Base station Interface Unit provides at least two interfaces, and it is mutual that the signal of a frequency range is carried out in each interface and base station;
Isolated location, its number is corresponding with the interface number of described Base station Interface Unit, and each isolated location is one to be imported described interface or inserts loss from the signal manufacturing of this interface output, to improve the isolation between the different frequency range signal;
The co-shunt Multiplexing Unit closes the signal of each isolated location output the road and is distributed at least one road when descending and exports antenna-feedback system to, and the signal that will come at least when up from antenna-feedback system exports each isolated location along separate routes to.
2, multiband according to claim 1 closes the road multiplexer composite device, it is characterized in that: each isolated location comprises at least one circulator, phase cascade during a plurality of circulator.
3, multiband according to claim 2 closes the road multiplexer composite device, it is characterized in that: only used the wherein single worker's function of straight-through port realization transmitting-receiving of circulator at least one isolated location.
4, multiband according to claim 2 closes the road multiplexer composite device, it is characterized in that: only having used wherein at least one isolated location, the isolated port of circulator realizes the single worker's function of transmitting-receiving.
5, multiband according to claim 2 closes the road multiplexer composite device, it is characterized in that: using wherein at least one isolated location simultaneously, the straight-through port and the isolated port of circulator realize the transmission duplex function.
6, close the road multiplexer composite device according to any described multiband in the claim 1 to 5, it is characterized in that: described co-shunt Multiplexing Unit adopts quadrature bridge.
7, close the road multiplexer composite device according to any described multiband in the claim 1 to 5, it is characterized in that: electrically connect by an interface in a filter unit and the relevant base station interface unit at an isolated location, the filtered unit of signal of being to and from filter unit carries out Filtering Processing.
8, a kind of multi-system access platform is characterized in that: it comprises as any described multiband in the claim 1 to 7 and closes the road multiplexer composite device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200515741U CN201266928Y (en) | 2008-07-31 | 2008-07-31 | Multi-system access platform and composite apparatus for multi-frequency-band whole path and branch path thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2008200515741U CN201266928Y (en) | 2008-07-31 | 2008-07-31 | Multi-system access platform and composite apparatus for multi-frequency-band whole path and branch path thereof |
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| CN201266928Y true CN201266928Y (en) | 2009-07-01 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101335934B (en) * | 2008-07-31 | 2011-07-27 | 京信通信系统（中国）有限公司 | Multi-system access platform and multiple frequency band demultiplexer and multiplexer composite device |
| CN102255628A (en) * | 2010-05-21 | 2011-11-23 | 黄山新视达通信技术有限公司 | Input/output module of multisystem combination |
| CN103746160A (en) * | 2013-12-25 | 2014-04-23 | 北京星河亮点技术股份有限公司 | Combiner module and combiner device |
| CN114340049A (en) * | 2021-12-31 | 2022-04-12 | 京信通信技术(广州)有限公司 | POI device and wireless coverage system |
-
2008
- 2008-07-31 CN CNU2008200515741U patent/CN201266928Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101335934B (en) * | 2008-07-31 | 2011-07-27 | 京信通信系统（中国）有限公司 | Multi-system access platform and multiple frequency band demultiplexer and multiplexer composite device |
| CN102255628A (en) * | 2010-05-21 | 2011-11-23 | 黄山新视达通信技术有限公司 | Input/output module of multisystem combination |
| CN103746160A (en) * | 2013-12-25 | 2014-04-23 | 北京星河亮点技术股份有限公司 | Combiner module and combiner device |
| CN103746160B (en) * | 2013-12-25 | 2015-10-28 | 北京星河亮点技术股份有限公司 | Close road module and close road device |
| CN114340049A (en) * | 2021-12-31 | 2022-04-12 | 京信通信技术(广州)有限公司 | POI device and wireless coverage system |
| CN114340049B (en) * | 2021-12-31 | 2023-05-26 | 京信通信技术(广州)有限公司 | POI device and wireless coverage system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20090701 Effective date of abandoning: 20080731 |