CN201467473U - M frequency band 1 to N optical fiber repeater system - Google Patents
M frequency band 1 to N optical fiber repeater system Download PDFInfo
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- CN201467473U CN201467473U CN2009200580548U CN200920058054U CN201467473U CN 201467473 U CN201467473 U CN 201467473U CN 2009200580548 U CN2009200580548 U CN 2009200580548U CN 200920058054 U CN200920058054 U CN 200920058054U CN 201467473 U CN201467473 U CN 201467473U
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Abstract
The utility model relates to an m frequency band 1 to N optical fiber repeater system. A relay terminal comprises a passive unit and a radio frequency unit, wherein the passive unit is used for realizing m frequency signal separation, and the radio frequency unit is used for signal photoelectric conversion; each BTS is respectively connected with the passive unit through a coupler; the passive unit is connected with the radio frequency unit through two radio frequency cables, and the radio frequency unit and each remote terminal are connected respectively through a pair of optical fibers remotely; and meanwhile, the N is a natural number, and the m is a natural number not less than 2. The utility model saves optical link resources and lowers the cost.
Description
Technical field
The utility model relates to the Mobile communication direct base station technology, is specifically related to 1 of a kind of m frequency range and drags N optical fiber repeater system.
Background technology
Along with the development of mobile communication technology, mobile communication frequency range and operator be along with the development of business is all progressively increasing, and it is more and more that operator uses a plurality of communications bands or a plurality of operator to use separately the different communication frequency range to cover some regional situation.When using the repeater to drag the solution that zooms out and cover of N,, in the time need covering certain zone simultaneously, will have to adopt the equipment of many different frequency ranges with many communications bands if continue to use existing one-segment optical fiber direct amplification station equipment as indoor and outdoor 1.Figure 1 shows that existing 3 frequency ranges 1 drag 1 optical fiber repeater system, wherein, BTS1 in the base station sub-system (Base Transceiver Station1, base transceiver station 1), coupler 1, relaying terminal 1 in the optical fiber repeater and remote termination 1 are as the communication equipment of a frequency band signals, BTS2 in the base station sub-system (Base Transceiver Station 2, base transceiver station 2), coupler 2, relaying terminal 2 in the optical fiber repeater and remote termination 2 are as the communication equipment of another frequency band signals, BTS3 in the base station sub-system (Base Transceiver Station 3, base transceiver station 3), coupler 3, relaying terminal 3 in the optical fiber repeater and remote termination 3 are as the communication equipment of the 3rd frequency band signals, remote termination 1, remote termination 2 and remote termination 3 carry out signal coupling back with mixer and carry out transmitting and receiving of signal by cover antenna.Above-mentioned existing 3 frequency ranges 1 drag 1 direct discharging station to adopt 3 cover communication equipments to realize the transmission of 3 frequency band signals, and use different uplink and downlink telecommunication optical fiber separately, have that networking is numerous and diverse, transmission link consumption is big, number of devices is many and the more high shortcoming of cost.
The above-mentioned 3 frequency ranges 11 optical fiber repeater system of dragging is applicable to just that also 1 of 3 communications bands drag 1 to zoom out and the covering scheme, 1 drag N to zoom out and when covering scheme when what be applied to the m frequency range, just need to adopt mN to come the m frequency range 1 of a long-range connection mN remote termination to drag N optical fiber repeater system to optical fiber, like this, existing m frequency range 1 drags the shortcoming of N optical fiber repeater system just more outstanding, and it is more inconvenient to use.
The utility model content
The purpose of this utility model is to overcome the shortcoming and defect of above-mentioned prior art, provide 1 of a kind of m frequency range to drag N optical fiber repeater system, the utility model can use a cover communication equipment (promptly 1 relaying terminal, N are to optical fiber and N remote termination of realization telecommunication) to realize the transmission of m different frequency range signal simultaneously, save m frequency range 1 and dragged N optical fiber repeater system to realize that 1 drags the optical link resource that zooms out and cover of N, and reduced the quantity and the cost of equipment.
The purpose of this utility model is achieved through the following technical solutions: 1 of a kind of m frequency range is dragged N optical fiber repeater system, comprises m BTS, a m coupler, 1 relaying terminal and N remote termination.Described relaying terminal comprises the radio frequency unit that is used to realize the parasitic element of m frequency Signal Separation and is used for signal is carried out opto-electronic conversion.Each BTS all is connected with parasitic element by 1 coupler separately.Described parasitic element is connected by two radio frequency cables with radio frequency unit, and radio frequency unit is connected by a pair of optical fiber remote respectively with each remote termination; Simultaneously, described N is a natural number, and described m is not less than 2 natural number.
Each remote termination includes and is used to realize the m far-end m frequency combiner of Signal Separation frequently, the far-end optical transceiver module, the up-downgoing radio-frequency module, individual descending power amplifier module of m and cover antenna. wherein, described far-end optical transceiver module is connected the back and is connected with each descending power amplifier module simultaneously with the up-downgoing radio-frequency module, each descending power amplifier module is connected with far-end m frequency combiner respectively, during with the transmission of realization downstream signal, power amplification to m road signal. simultaneously, the up-downgoing radio-frequency module also directly is connected with far-end m frequency combiner, then, far-end m frequency combiner is connected with cover antenna.
Preferably, described parasitic element comprises the relay m frequency combiner that is used to realize m frequency Signal Separation.
Described radio frequency unit comprises the relay optical transceiver module that is provided with light transmitting-receiving interface.
The light transmitting-receiving interface of described relay optical transceiver module is the light transmitting-receiving interface that is provided with N channel paths.
As optimized technical scheme, described N is 1,2,3 or 4.
As optimized technical scheme, described m is 2,3 or 4.
1 of a kind of m frequency range of the utility model drags the operation principle of N optical fiber repeater system to comprise that down link covers principle and ul transmissions principle, and preferred operation principle is specific as follows:
Down link covers principle---
The downlink radio-frequency signal of the different frequency range that each BTS among m BTS produces is coupled by the coupler that links to each other separately, the downlink radio-frequency signal of the m road different frequency range that obtains is sent to the relay m frequency combiner of relaying terminal parasitic element simultaneously, relay m frequency combiner separates the downlink radio-frequency signal of m road different frequency range, send relay optical transceiver module in the radio frequency unit to by two radio frequency cables then, after by the relay optical transceiver module downlink radio-frequency signal being carried out electric light conversion and is modulated into light signal, arrive each remote termination through a pair of Optical Fiber Transmission respectively by light transmitting-receiving interface, the far-end optical transceiver module of each remote termination carries out the light signal that receives after opto-electronic conversion is modulated into m road radiofrequency signal, earlier carry out power amplification by the up-downgoing radio-frequency module, then, downlink radio-frequency signal after amplify on the m road is amplified by 1 descending power amplifier module in m the descending power amplifier module respectively again, then, the m road downlink radio-frequency signal that obtains after the amplification sends to cover antenna by far-end m frequency combiner, and downlink radio-frequency signal carries out wireless coverage by the emission of cover antenna;
(2) be that down link covers principle more than, just opposite for its transfer process of up link, the ul transmissions principle---
The cover antenna of the up radiofrequency signal that travelling carriage (mobile phone) sends remote termination in the zone receives and enters far-end m frequency combiner, far-end m frequency combiner separates up radiofrequency signal and send into the up-downgoing radio-frequency module of far-end, signal after the separation is amplified into the far-end optical transceiver module through the up-downgoing radio-frequency module, carry out the electric light conversion by optical transceiver module and be modulated into the light signal emission, light signal is transferred to the relay optical transceiver module of relaying terminal radio frequency unit by optical fiber remote, the relay optical transceiver module carries out opto-electronic conversion with light signal and is modulated into radiofrequency signal and delivers to parasitic element, then, this radiofrequency signal is isolated the signal of m different frequency range by the relay m frequency combiner of parasitic element, wherein, the signal of frequency range i is transferred to BTSi by coupler i, wherein, the i value is 1 to m.
The utility model has following advantage and effect with respect to prior art:
The utility model by the relaying terminal integrated be used to realize m frequently Signal Separation parasitic element and be used for signal is carried out the radio frequency unit of opto-electronic conversion, and the integrated module to functions such as m frequency signal separate of remote termination, realize that 1 drags zooming out and the covering scheme of N, only utilize 1 cover communication equipment (1 relaying terminal, N is to optical fiber and N remote termination) just realized that the m that prior art need be used overlaps communication equipment (m relaying terminal, mN is to optical fiber and mN remote termination) m frequency range 1 drag that N optical fiber repeater system could realize 1 drag zooming out and the covering scheme of N, saved the optical link resource greatly, and, because the functional module of m frequency range is integrated in the middle of a set of equipment, slave unit volume no matter, quantity and cost aspect are all declined to a great extent, and more help applying.
Description of drawings
Fig. 1 is the structural representation that existing 3 frequency ranges 1 are dragged 1 direct discharging station;
Fig. 2 be among the embodiment 1 a kind of 2 frequency ranges 1 drag the general structure schematic diagram of 1 optical fiber repeater system;
Fig. 3 be among the embodiment 1 a kind of 2 frequency ranges 1 drag the general structure schematic diagram of 4 optical fiber repeater systems;
Fig. 4 be among the embodiment 2 a kind of 3 frequency ranges 1 drag the general structure schematic diagram of 1 optical fiber repeater system;
Fig. 5 be among the embodiment 2 a kind of m frequency range 1 drag the general structure schematic diagram of 1 optical fiber repeater system;
Fig. 6 be among the embodiment 2 a kind of 3 frequency ranges 1 drag the structural representation of 4 optical fiber repeater systems.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.
Generally speaking, 1 of a kind of m frequency range of the utility model drag N optical fiber repeater system to adopt 1 complete equipment (1 relaying terminal, N to optical fiber and N remote termination) to realize that 1 drags zooming out and the covering scheme of N exactly.
1 of a kind of m frequency range of the utility model is dragged N optical fiber repeater system, comprises m BTS, a m coupler, 1 relaying terminal and N remote termination.Described relaying terminal comprises the radio frequency unit that is used to realize the parasitic element of m frequency Signal Separation and is used for signal is carried out opto-electronic conversion.Each BTS all is connected with parasitic element by 1 coupler separately.Described parasitic element is connected by two radio frequency cables with radio frequency unit, and radio frequency unit is connected by a pair of optical fiber remote respectively with each remote termination; Simultaneously, described N is a natural number, and described m is not less than 2 natural number.Described N is preferably 1,2,3 or 4, and described m is preferably 2,3 or 4.To enumerate specific embodiment the utility model is done more detailed description according to concrete application of the present utility model below.
Embodiment 1
Be illustrated in figure 2 as 1 of a kind of 2 frequency ranges of present embodiment and drag the general structure of 1 optical fiber repeater system, comprise BTS1, coupler 1, BTS2,2,1 relaying terminal of coupler and 1 remote termination.Wherein, BTS1 is connected the back and is connected with the relaying terminal with coupler 1, BTS2 with also be connected after coupler 2 is connected with the relaying terminal, then, the relaying terminal is connected with remote termination by a pair of optical fiber.
For 1 of better book present embodiment 2 frequency ranges are dragged the technical scheme of N optical fiber repeater system, below specifically describe with 1 of 2 frequency ranges, the 4 optical fiber repeater systems of dragging.
As shown in Figure 3,1 of a kind of 2 frequency ranges are dragged 4 optical fiber repeater systems, comprise BTS1, coupler 1, BTS2,2,1 relaying terminal of coupler and 4 remote terminations (remote termination 1, remote termination 2, remote termination 3 and remote termination 4).
Described relaying terminal comprises the radio frequency unit that is used to realize the parasitic element that two-frequency signal separates and is used for signal is carried out opto-electronic conversion.
Described parasitic element bag is used to realize the relay dual-frequency channel merger of two-frequency signal separation.
Described radio frequency unit comprises four-way road, relay optical transceiver module, and four-way road, relay optical transceiver module is being provided with the light transmitting-receiving interface with 4 channel paths.
Described BTS1 is connected the back with coupler 1 and relay dual-frequency channel merger in the parasitic element is connected, BTS2 with also be connected after coupler 2 is connected with relay dual-frequency channel merger in the parasitic element.
Described relay dual-frequency channel merger links to each other by two radio frequency cables with four-way road, relay optical transceiver module, and the light transmitting-receiving interface with 4 channel paths is connected by a pair of optical fiber remote respectively with each remote termination.
Each remote termination includes far-end dual-frequency channel merger, far-end optical transceiver module, up-downgoing radio-frequency module, descending power amplifier module 1, descending power amplifier module 2 and the cover antenna that is used to realize the two-frequency signal separation. and wherein, described far-end optical transceiver module is connected with the up-downgoing radio-frequency module; The up-downgoing radio-frequency module is connected with the far-end dual-frequency channel merger by descending power amplifier module 1, descending power amplifier module 2 respectively, during with the transmission of realization downstream signal, power amplification to the two-way signal. simultaneously, the up-downgoing radio-frequency module also directly is connected with the far-end dual-frequency channel merger, then, the far-end dual-frequency channel merger is connected with cover antenna.
1 of above-mentioned 2 frequency ranges drag the operation principle of 4 optical fiber repeater systems to comprise that down link covers principle and ul transmissions principle, and preferred operation principle is specific as follows:
(1) down link covers principle---
The downlink radio-frequency signal of the two-way different frequency range that BTS1 and BTS2 produce is respectively by coupler 1, coupler 2 is coupled, be sent to the relay dual-frequency channel merger of relaying terminal parasitic element then simultaneously, the relay dual-frequency channel merger separates the downlink radio-frequency signal of two-way different frequency range, send four-way road, relay optical transceiver module in the radio frequency unit to by two radio frequency cables then, after by four-way road, relay optical transceiver module downlink radio-frequency signal being carried out electric light conversion and is modulated into light signal, arrive each remote termination through a pair of Optical Fiber Transmission respectively by light transmitting-receiving interface, the far-end optical transceiver module of each remote termination carries out the light signal that receives after opto-electronic conversion is modulated into the two-way radiofrequency signal, earlier carry out power amplification by the up-downgoing radio-frequency module, then, downlink radio-frequency signal after two-way amplifies is amplified by descending power amplifier module 1 and descending power amplifier module 2 respectively again, then, send to cover antenna by the far-end dual-frequency channel merger, downlink radio-frequency signal carries out wireless coverage by the emission of cover antenna;
(2) be that down link covers principle more than, just opposite for its transfer process of up link, and also the ul transmissions principle of remote termination 1, remote termination 2,4 pairs of signals of remote termination 3 and remote termination is identical, all specific as follows---
The cover antenna of the up radiofrequency signal that travelling carriage (mobile phone) sends remote termination in the zone receives and enters the far-end dual-frequency channel merger, the far-end dual-frequency channel merger separates up radiofrequency signal and send into the up-downgoing radio-frequency module of far-end, signal after the separation is amplified into the far-end optical transceiver module through the up-downgoing radio-frequency module, carry out the electric light conversion by optical transceiver module and be modulated into the light signal emission, light signal is transferred to the relay optical transceiver module of relaying terminal radio frequency unit by optical fiber remote, the relay optical transceiver module carries out opto-electronic conversion with light signal and is modulated into radiofrequency signal and delivers to parasitic element, then, this radiofrequency signal is isolated the signal of two different frequency ranges by the relay dual-frequency channel merger of parasitic element, the signal of one of them frequency range is transferred to BTS1 through coupler 1, and the signal of another frequency range is transferred to BTS2 through coupler 2.
Be illustrated in figure 4 as present embodiment and realize that 1 drags 1 zoom out and the general structure when covering scheme, be specially 1 of 3 frequency ranges and drag 1 optical fiber repeater system, comprise BTS1, coupler 1, BTS2, coupler 2, BTS3,3,1 relaying terminal of coupler and 1 remote termination.Wherein, BTS1 is connected the back and is connected with the relaying terminal with coupler 1, BTS2 with also be connected after coupler 2 is connected with the relaying terminal, BTS3 with also be connected after coupler 3 is connected with the relaying terminal, then, the relaying terminal is connected with remote termination by a pair of optical fiber.
Present embodiment realizes that 1 drags 1 zoom out and the covering scheme, and its general structure of more summarizing is 1 of m frequency range and drags 1 optical fiber repeater system as shown in Figure 5, and its overall structure drags 1 optical fiber repeater system identical with 1 of above-mentioned 3 frequency ranges.
For 1 of better book present embodiment 3 frequency ranges are dragged the technical scheme of N optical fiber repeater system, below specifically describe with 1 of 3 frequency ranges, the 4 optical fiber repeater systems of dragging.
As shown in Figure 6,1 of a kind of 3 frequency ranges are dragged 4 optical fiber repeater systems, comprise BTS1, coupler 1, BTS2, coupler 2, BTS3,3,1 relaying terminal of coupler and 4 remote terminations (remote termination 1, remote termination 2, remote termination 3 and remote termination 4).
Described relaying terminal comprises the radio frequency unit that is used to realize the parasitic element of 3 frequency Signal Separation and is used for signal is carried out opto-electronic conversion.
Described parasitic element comprises relay 3 frequency combiners that are used to realize 3 frequency Signal Separation.
Described radio frequency unit comprises four-way road, relay optical transceiver module, and four-way road, relay optical transceiver module is being provided with the light transmitting-receiving interface with 4 channel paths.
Described BTS1 is connected the back and is connected with relay 3 frequency combiners in the parasitic element with coupler 1, BTS2 is connected with coupler 2 afterwards, BTS3 and also being connected with relay 3 frequency combiners in the parasitic element after coupler 3 is connected.
Described relay 3 frequency combiners are connected by two radio frequency cables with four-way road, relay optical transceiver module, and the light transmitting-receiving interface with 4 channel paths is connected by a pair of optical fiber remote respectively with each remote termination.
Each remote termination includes far-end 3 frequency combiners, far-end optical transceiver module, up-downgoing radio-frequency module, descending power amplifier module 1, descending power amplifier module 2, descending power amplifier module 3 and the cover antenna that is used to realize 3 frequency Signal Separation.Wherein, described far-end optical transceiver module is connected with the up-downgoing radio-frequency module; The up-downgoing radio-frequency module is connected with far-end 3 frequency combiners by descending power amplifier module 1, descending power amplifier module 2, descending power amplifier module 3 respectively, during with the transmission of realization downstream signal, to the power amplification of 3 road signals.Simultaneously, the up-downgoing radio-frequency module also directly is connected with far-end 3 frequency combiners, and then, far-end 3 frequency combiners are connected with cover antenna.
1 of above-mentioned 3 frequency ranges drag the operation principle of 4 optical fiber repeater systems to comprise that down link covers principle and ul transmissions principle, and preferred operation principle is specific as follows:
Down link covers principle---
BTS1, the downlink radio-frequency signal of 3 road different frequency ranges that BTS2 and BTS3 produce is respectively by coupler 1, coupler 2, coupler 3 is coupled, the downlink radio-frequency signal of 3 road different frequency ranges that obtain is sent to relay 3 frequency combiners of relaying terminal parasitic element simultaneously, relay 3 frequency combiners separate the downlink radio-frequency signal of 3 road different frequency ranges, send four-way road, relay optical transceiver module in the radio frequency unit to by two radio frequency cables then, after by four-way road, relay optical transceiver module downlink radio-frequency signal being carried out electric light conversion and is modulated into light signal, arrive each remote termination through a pair of Optical Fiber Transmission respectively by light transmitting-receiving interface, the far-end optical transceiver module of each remote termination carries out the light signal that receives after opto-electronic conversion is modulated into 3 tunnel radiofrequency signals, earlier carry out power amplification by the up-downgoing radio-frequency module, then, downlink radio-frequency signal after 3 tunnel amplifications is more respectively by descending power amplifier module 1, descending power amplifier module 2 and descending power amplifier module 3 amplify, then, send to cover antenna by far-end 3 frequency combiners, downlink radio-frequency signal carries out wireless coverage by the emission of cover antenna;
(2) be that down link covers principle more than, just opposite for its transfer process of up link, and also the ul transmissions principle of remote termination 1, remote termination 2,4 pairs of signals of remote termination 3 and remote termination is identical, all specific as follows---
The cover antenna of the up radiofrequency signal that travelling carriage (mobile phone) sends remote termination in the zone receives and enters far-end 3 frequency combiners, far-end 3 frequency combiners separate up radiofrequency signal and send into the up-downgoing radio-frequency module of far-end, signal after the separation is amplified into the far-end optical transceiver module through the up-downgoing radio-frequency module, carry out the electric light conversion by optical transceiver module and be modulated into the light signal emission, light signal is transferred to the relay optical transceiver module of relaying terminal radio frequency unit by optical fiber remote, the relay optical transceiver module carries out opto-electronic conversion with light signal and is modulated into radiofrequency signal and delivers to parasitic element, then, this radiofrequency signal is isolated the signal of 3 different frequency ranges by relay 3 frequency combiners of parasitic element, wherein, the signal of frequency range 1 is transferred to BTS1 by coupler 1, the signal of frequency range 2 is transferred to BTS2 by coupler 2, and the signal of frequency range 3 is transferred to BTS3 by coupler 3.
The foregoing description is the utility model preferred implementation; but execution mode of the present utility model is not limited by the examples; 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 (7)
1. 1 of a m frequency range drag N optical fiber repeater system, comprise m BTS, a m coupler, 1 relaying terminal and N remote termination, it is characterized in that: described relaying terminal comprises the radio frequency unit that is used to realize the parasitic element of m frequency Signal Separation and is used for signal is carried out opto-electronic conversion; Each BTS all is connected with parasitic element by 1 coupler separately; Described parasitic element is connected by two radio frequency cables with radio frequency unit, and radio frequency unit is connected by a pair of optical fiber remote respectively with each remote termination; Simultaneously, described N is a natural number, and described m is not less than 2 natural number.
2. 1 of a kind of m frequency range as claimed in claim 1 is dragged N optical fiber repeater system, it is characterized in that: described remote termination comprises far-end m frequency combiner, far-end optical transceiver module, up-downgoing radio-frequency module, a m descending power amplifier module and the cover antenna that is used to realize m frequency Signal Separation; Wherein, described far-end optical transceiver module is connected the back and is connected with each descending power amplifier module simultaneously with the up-downgoing radio-frequency module, and each descending power amplifier module is connected with far-end m frequency combiner respectively; Simultaneously, the up-downgoing radio-frequency module also directly is connected with far-end m frequency combiner, and then, far-end m frequency combiner is connected with cover antenna.
3. 1 of a kind of m frequency range as claimed in claim 1 is dragged N optical fiber repeater system, it is characterized in that: described parasitic element comprises the relay m frequency combiner that is used to realize m frequency Signal Separation.
4. 1 of a kind of m frequency range as claimed in claim 1 is dragged N optical fiber repeater system, it is characterized in that: described radio frequency unit comprises the relay optical transceiver module that is provided with light transmitting-receiving interface.
5. 1 of a kind of m frequency range as claimed in claim 4 is dragged N optical fiber repeater system, it is characterized in that: the light transmitting-receiving interface of described relay optical transceiver module is the light transmitting-receiving interface that is provided with N channel paths.
6. drag N optical fiber repeater system as 1 of claim 1 or 5 described a kind of m frequency ranges, it is characterized in that: described N is 1,2,3 or 4.
7. drag N optical fiber repeater system as 1 of each described a kind of m frequency range in the claim 1,2,3, it is characterized in that: described m is 2,3 or 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200580548U CN201467473U (en) | 2009-06-08 | 2009-06-08 | M frequency band 1 to N optical fiber repeater system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200580548U CN201467473U (en) | 2009-06-08 | 2009-06-08 | M frequency band 1 to N optical fiber repeater system |
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| CN201467473U true CN201467473U (en) | 2010-05-12 |
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| CN2009200580548U Expired - Lifetime CN201467473U (en) | 2009-06-08 | 2009-06-08 | M frequency band 1 to N optical fiber repeater system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102377027A (en) * | 2010-08-27 | 2012-03-14 | 大唐移动通信设备有限公司 | Active antenna and method for calibrating active antenna |
| WO2014048140A1 (en) * | 2012-09-27 | 2014-04-03 | 华为技术有限公司 | Repeater |
| CN105337668A (en) * | 2015-07-01 | 2016-02-17 | 南京泰通科技股份有限公司 | High-reliability 400MHz railway flat-regulation digital optical fiber repeater |
-
2009
- 2009-06-08 CN CN2009200580548U patent/CN201467473U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102377027A (en) * | 2010-08-27 | 2012-03-14 | 大唐移动通信设备有限公司 | Active antenna and method for calibrating active antenna |
| WO2014048140A1 (en) * | 2012-09-27 | 2014-04-03 | 华为技术有限公司 | Repeater |
| CN105337668A (en) * | 2015-07-01 | 2016-02-17 | 南京泰通科技股份有限公司 | High-reliability 400MHz railway flat-regulation digital optical fiber repeater |
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