CN2831622Y - Near far end RF photoelectric converting modular in system of diversity reception direct-emitting station - Google Patents
Near far end RF photoelectric converting modular in system of diversity reception direct-emitting station Download PDFInfo
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- CN2831622Y CN2831622Y CNU2005200645582U CN200520064558U CN2831622Y CN 2831622 Y CN2831622 Y CN 2831622Y CN U2005200645582 U CNU2005200645582 U CN U2005200645582U CN 200520064558 U CN200520064558 U CN 200520064558U CN 2831622 Y CN2831622 Y CN 2831622Y
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Abstract
The utility model provides a near end radio frequency photoelectric conversion module in a diversity receiving direct amplifying station system. The utility model comprises a down optical transmitter, a near end wavelength division multiplexing device, an up optical receiver, a diversity up optical receiver and a near end microprogramming controller, wherein the single fiber of the near end wavelength division multiplexing device outputs a down optical signal towards a far end and inputs an up signal and a diversity up signal coming from a far end, and the two signals are respectively received by the up optical receiver and the diversity up optical receiver after being multiplexed. A far end radio frequency photoelectric conversion module which is used for emitting and receiving and is corresponding with the up signal, the diversity up signal and the down signal of the near end radio frequency photoelectric conversion module in the diversity receiving direct amplifying station system; the composition of the far end radio frequency photoelectric conversion module is corresponding to the composition of the near end radio frequency photoelectric conversion module which are both provided with microprogramming controllers; therefore each parameter of a module can be monitored in real time, and the intelligent control of the module is accomplished. In this way, only one pair of radio frequency photoelectric conversion modules with the structure is needed to transmit three signals, and the utility model has low cost and simple structure.
Description
Technical field
The utility model relates to a kind of optical fiber repeater network equipment, relates in particular to a kind of near, far end radio frequency photoelectric conversion module that is applied in the diversity reception direct discharging station.
Technical background
The radio frequency photoelectric conversion module is that radiofrequency signal is converted to light signal is converted to the signal of telecommunication again by light signal via Optical Fiber Transmission fibre optic transmission equipment.Because characteristics such as light loss in optical fiber is little, the radio frequency photoelectric conversion module is used in the mobile communication expands the coverage area as trunking, be to solve a kind of preferred version that communication network extends covering power, this product also is used widely in radar communication as delay line simultaneously.Along with mobile communication develop rapidly, the appearance of various new technologies, more and more higher to the requirement that mobile communication covers, consider that from telephone traffic, cost and network quality aspect optical fiber repeater is to enlarge the optimal selection that covers.Laying along with 2.5G and 3G communication network, CDMA (Code Division Multiple Access) becomes the main access way of present mobile communication day by day, but its systematic function is subject to multipath fading, the multiple access of wireless channel and disturbs (MAI) and intersymbol interference (ISI), treatment technology during by sky, can make full use of the advantage of spacing wave treatment technology and time signal treatment technology in spatial domain and time-domain Combined Treatment received signal, effectively resist ISI, reduce MAI, increase diversity gain and improve array gain.For reaching preferably also transmission diversity receive path of network coverage quality requirement optical fiber repeater.The radio frequency photoelectric conversion module that uses in the network coverage at present is applied in the direct discharging station of being with diversity reception need and need two optical fiber at least with two pairs of radio frequency photoelectric conversion modules, as shown in Figure 1, no matter the radio frequency photoelectric conversion module that is near-end or far-end includes a WDM device (WDM), one optical transmitting set, an optical receiver, the gain of whole module need artificial the adjustment to realize.The radio frequency photoelectric conversion module of this class formation is one up when transmission in the direct discharging station that is applied to the band diversity reception, during up three radiofrequency signals of a descending and diversity, just must adopt two pairs the radio frequency photoelectric conversion module of totally four previous constructions realize.Wherein a pair of module is used for up radiofrequency signal of transmission of one line and one road downlink radio-frequency signal, and another then is used for the up radiofrequency signal of transmission of one line diversity to module.So just make near-end and far-end respectively need two modules, each module all needs a serial ports to be connected with monitor board, makes system's control complicated, the cost height.
The content of utility model
Goal of the invention: the utility model provides near-end and the far end radio frequency photoelectric conversion module in a pair of diversity reception direct discharging station, just can transmit up, descending and up three radiofrequency signals of a diversity, the integrated level height, and cost is low.
For realizing above goal of the invention, the technical solution adopted in the utility model is as follows: the near-end radio frequency photoelectric conversion module in the diversity reception direct discharging station, comprise: a descending optical transmitting set is used for a descending radio-frequency input signals is converted to the light signal that wavelength is λ 1; One near-end WDM device, comprise first wavelength division multiplexer and second wavelength division multiplexer, first wavelength division multiplexer is connected with an end of single fiber, the other end of single fiber is used for being connected with far-end, this single fiber input is from the two-way uplink optical signal of far-end, its wavelength is respectively λ 2, λ 3, and by described first wavelength division multiplexer total reflection to the second wavelength division multiplexer, light signal and transmission peak wavelength that this second wavelength division multiplexer reflection wavelength is λ 2 are the light signal of λ 3; One up optical receiver, the wavelength that is used to receive after described second wavelength division multiplexer reflection is the light signal of λ 2 and converts thereof into up radiofrequency signal output; The up optical receiver of one diversity, the wavelength that is used to receive after the described second wavelength division multiplexer transmission is the light signal of λ 3 and converts thereof into the up radiofrequency signal output of diversity; Also comprise: a near-end microprocessor controller is the single-chip microcomputer of a band AD conversion, has: two serial ports, and serial ports 1 is connected with near-end FSK, is used for far, the transfer of data between the near-end; Serial ports 2 is connected with host computer, is used for host computer communication, realizes that human-computer dialogue makes module have real-time monitoring parameter function by programming, and its communication interface meets UNICOM's united net management agreement and similar agreement; Interface I/O1 controls the numerical-control attenuator of up received RF treatment circuit; The numerical-control attenuator of the up received RF treatment circuit of interface I/O2 control diversity; Interface I/O3 is used for being provided with and monitoring FSK chip; By each parameter monitoring amount of ADC input interface pin connection module, its interface pin inserts respectively: the detection voltage of the luminous power of descending optical transmitting set and laser optical electric current; The input optical power of up optical receiver detects voltage; The input optical power of the up optical receiver of diversity detects voltage; The radio-frequency power of downlink rf processing circuitry detects voltage; The radio-frequency power of up received RF treatment circuit detects voltage; The radio-frequency power of the up received RF treatment circuit of diversity detects voltage.
Described near-end microprocessor controller is single-chip microcomputer MSP430F147.
Described near-end FSK is chip CC1000.
Far end radio frequency photoelectric conversion module in a kind of corresponding diversity reception direct discharging station of uplink and downlink signal that is used for transmitting and receiving with the near-end radio frequency photoelectric conversion module of above-mentioned diversity reception direct discharging station, comprise: the up optical transmitting set of a diversity is used for the up radio-frequency input signals of a diversity is converted to the light signal that wavelength is λ 3; One up optical transmitting set is used for a up radio-frequency input signals is converted to the light signal that wavelength is λ 2; One far-end WDM device, comprise the 3rd wavelength division multiplexer and the 4th wavelength division multiplexer, the 3rd wavelength division multiplexer is connected with an end of single fiber, the other end of single fiber is used for being connected with near-end, this single fiber input is λ 1 light signal from the wavelength of going on the way of near-end, the 4th wavelength division multiplexer all is incident to the 3rd wavelength division multiplexer after reflecting the light signal that light signal that described wavelength is λ 2 and the described wavelength of transmission be λ 3, is done after the total reflection by the up near-end that exports to of single fiber by it; Described wavelength is that the light signal of λ 1 is then through the 3rd wavelength division multiplexer transmission; Descending optical receiver, the wavelength that is used to receive after described the 3rd wavelength division multiplexer transmission is the light signal of λ 1 and converts thereof into downlink radio-frequency signal output; It is characterized in that, also comprise: a far-end microprocessor controller, be the single-chip microcomputer of a band AD conversion, have two serial ports, serial ports 1 is connected with near-end FSK, be used for the transfer of data between far away, the near-end, microcontroller serial port 2 is connected with host computer, is used for realizing human-computer dialogue with host computer communication, make module have real-time monitoring parameter function by programming, its communication interface meets UNICOM's united net management agreement and similar agreement; Interface I/O4 controls the voltage control rf gain of the numerical-control attenuator pin of descending received RF treatment circuit; Interface I/O5 is used for being provided with and monitoring FSK chip; By each parameter monitoring amount of ADC input interface pin connection module, its interface pin inserts respectively: from the luminous power of up optical transmitting set and the detection voltage of reflector photoelectric current; From the luminous power of the up optical transmitting set of diversity and the detection voltage of reflector photoelectric current; Input optical power from descending optical receiver detects voltage.
Described far-end microprocessor controller is a single-chip microcomputer MSP430F147.
Described far-end FSK is chip CC1000.
Because the near-end radio frequency photoelectric conversion module in the diversity reception direct discharging station in the said structure has a descending optical transmitting set, one up optical receiver, the near-end WDM device of up optical receiver of one diversity and the two-way three-wavelength of a single fiber, descending optical receiver with the far end radio frequency photoelectric conversion module, one up optical transmitting set, the near-end WDM device of up optical transmitting set of one diversity and the two-way three-wavelength of a single fiber forms emission and the relation one to one that receives, in the direct discharging station of diversity reception, only end-fire frequency photoelectric conversion module and the pairing of far end radio frequency photoelectric conversion module nearly used and got final product, and near-end and far end radio frequency photoelectric conversion module are equipped with microprocessor controller, can be to the parameter of module, comprise laser diode current, luminous luminous power, the luminous power of optical receiver, the input and output radio frequency level, the FSK emissive porwer is monitored in real time, significantly improve the module reliability, can reduce manufacturing cost on a large scale, be fit to large-scale production, and networking flexibility is simple and easy to use.
Description of drawings
Fig. 1 represents that prior art is used for the connection diagram of the proximal-distal radio frequency photoelectric conversion module of diversity reception direct discharging station.
Fig. 2 represents the near-end in the utility model diversity reception direct discharging station and the connection diagram of far end radio frequency photoelectric conversion module.
Fig. 3 represents the block diagram of the near-end radio frequency photoelectric conversion module in the diversity reception direct discharging station shown in Figure 2.
Fig. 4 represents the block diagram of the far end radio frequency photoelectric conversion module in the diversity reception direct discharging station shown in Figure 2.
Fig. 5 represents near-end microprocessor controller schematic diagram shown in Figure 3.
Fig. 6 represents far-end microprocessor controller schematic diagram shown in Figure 4.
Fig. 7 represents the structural representation of near-end WDM device shown in Figure 3.
Fig. 8 represents the structural representation of far-end WDM device shown in Figure 4.
Embodiment
Describe the utility model most preferred embodiment in detail below in conjunction with accompanying drawing.
By the near-end in the diversity reception direct discharging station shown in Figure 2, far end radio frequency photoelectric conversion module connection diagram, connect the transmitted in both directions that can realize the proximal-distal signal by a single fiber between near, the far end radio frequency photoelectric conversion module 100,200 in the diversity reception direct discharging station.Be that near-end radio frequency photoelectric conversion module 100 in the diversity reception direct discharging station is to far-end downlink one radiofrequency signal, its wavelength is λ 1, receive by the far end radio frequency photoelectric conversion module in the diversity reception direct discharging station 200 by the single fiber downlink transfer between two modules to far-end, simultaneously, far end radio frequency photoelectric conversion module 200 in the diversity reception direct discharging station in the diversity reception direct discharging station is to two radiofrequency signals of the up emission of near-end, its wavelength is respectively λ 2, λ 3, equally also be that single fiber by between the two transfers to near-end and received by the near-end radio frequency photoelectric conversion module in the diversity reception direct discharging station 100, thereby reach the intercommunication mutually of near-end and far-end.
Near-end radio frequency photoelectric conversion module 100 by in the diversity reception direct discharging station shown in Figure 3 comprises: a descending optical transmitting set 102, a near-end WDM device 103, one up optical receiver 104, the up optical receiver 111 of a diversity and a near-end microprocessor controller 110.One descending radiofrequency signal input module mixes through downlink filter 109 filtered signals with the radiofrequency signal that near-end FSK108 sends after downlink rf processing circuitry 101 is handled, remove to modulate descending optical transmitting set 102 then, send the light signal that wavelength is λ 1; Near-end WDM device 103 as shown in Figure 7, comprise first wavelength division multiplexer 1031 and second wavelength division multiplexer 1032, first wavelength division multiplexer 1031 is connected with an end of single fiber, the other end of single fiber is used for being connected with far-end, this single fiber input is from the two-way uplink optical signal of far-end, its wavelength is respectively λ 2, λ 3, through first wavelength division multiplexer, 1031 total reflection to the second wavelength division multiplexers 1032, this wavelength division multiplexer is to be converted to after the light signal reflection back of λ 2 is received by up optical receiver 104 to be divided into two-way after the signal of telecommunication enters up amplifying circuit 105 amplifications with wavelength: the one tunnel enters up received RF treatment circuit 106 control amplifications waits processing, then the up radio frequency output signal of output expectation; The up receiving filter 107 of another Lu Zejing is isolated fsk signal, delivers to near-end FSK108 demodulation; Simultaneously, second wavelength division multiplexer 1032 is after being received and be converted to the signal of telecommunication and entered the up amplifying circuit 112 of diversity and amplify by the up optical receiver 111 of diversity behind the light signal total transmissivity of λ 3 with wavelength, wait processing, the up radio frequency output signal of diversity of output expectation by the up received RF treatment circuit 113 control amplifications of diversity.The wavelength of descending optical transmitting set 102 emissions is that the light signal of λ 1 is then by passing through the single fiber downlink transfer after the 1031 whole transmissions of first wavelength division multiplexer to far-end.Near-end microprocessor controller 110 as shown in Figure 5, single-chip microcomputer with AD translation function, in the present embodiment, adopt the MSP430F147 chip, and have two serial ports, serial ports 1 is connected with near-end FSK108, its chip model is CC1000, be used for the transfer of data between far away, the near-end, microcontroller serial port 2 is connected with host computer, is used for communicating by letter with host computer, realizes human-computer dialogue, make module have the real-time monitoring module parameter function by programming, its communication interface meets UNICOM's united net management agreement and similar agreement.Single-chip microcomputer is used for being provided with by interface I/O3 and monitoring FSK chip.By each parameter monitoring amount of ADC input interface pin connection module, be respectively: from the luminous power of descending optical transmitting set 102 and the detection voltage of laser optical electric current; Input optical power from up optical receiver 104 detects voltage; Input optical power from the up optical receiver 111 of diversity detects voltage; Radio-frequency power from downlink rf processing circuitry 101 detects voltage; Radio-frequency power from up received RF treatment circuit 106 detects voltage; Radio-frequency power from the up received RF treatment circuit 113 of diversity detects voltage, and these data are handled through the AD conversion and by near-end microprocessor controller 110.This single-chip microcomputer is controlled up received RF signal gain size by the numerical-control attenuator HMC273 pin level that I/O1 controls up received RF treatment circuit 106; Control the gain size of the up received RF of diversity by the numerical-control attenuator HMC273 pin level of the up received RF treatment circuit 113 of I/O2 control diversity.Thus, single-chip microcomputer just can be realized the parameter of module is carried out real-time intelligent monitoring by software, comprising: downlink device photoelectric current, luminous power, the luminous power of the up and up optical receiver of diversity, parameters such as the input and output power of each radio circuit and temperature.And can realize other function, such as active alarm, the adjustment of luminous power software, radio frequency link AGC, the adjustment of rf gain software, functions such as radio frequency ALC are set.
By the far end radio frequency photoelectric conversion module 200 in the diversity reception direct discharging station shown in Figure 4, this module to transmit and receive signal corresponding with the uplink and downlink signal that aforementioned proximal radio frequency photoelectric conversion module 100 is transmitted and received.Far end radio frequency photoelectric conversion module 200 in this diversity reception direct discharging station comprises: one is used to receive descending optical receiver 204 that wavelength that descending optical transmitting set sends is the light signal of λ 1, a far-end WDM device 203, one sends the up optical transmitting set 212, that up wavelength is the light signal of λ 2 to near-end and sends a up optical transmitting set 202 of diversity and the far-end microprocessor controller 210 that wavelength is the diversity uplink optical signal of λ 3 to near-end.One up radio-frequency input signals is handled the back through up emission rf processing circuitry 211 and is mixed through up emission filter 209 filtered signals with the radiofrequency signal that its far-end FSK208 sends, after removing to modulate up optical transmitting set 212 then, send the light signal that a wavelength is λ 2; After the up radio-frequency input signals of one diversity was handled through the up emission rf processing circuitry 201 of diversity, the up optical transmitting set 202 of modulation diversity sent the light signal that wavelength is λ 3.Far-end WDM device 203 as shown in Figure 8, comprise the 3rd wavelength division multiplexer 2031 and the 4th wavelength division multiplexer 2032, the 3rd wavelength division multiplexer 2031 is connected with an end of single fiber, the other end of single fiber is used for being connected with near-end, this single fiber input is λ 1 light signal from the wavelength of going on the way of near-end, the 4th wavelength division multiplexer 2032 reflection wavelengths are all to be incident to the 3rd wavelength division multiplexer 2031 behind the light signal of λ 2 and the light signal that transmission peak wavelength is λ 3, are done after the total reflection by the up near-end that exports to of single fiber by it.By the downstream wavelength from near-end of single fiber input is that the light signal of λ 1 is then received by descending optical receiver 204 after 2031 transmissions of the 3rd wavelength division multiplexer, and enter descending amplifying circuit 205 after converting radiofrequency signal to, after amplifying, be divided into two-way, one the tunnel enters descending received RF treatment circuit 206 control amplifications waits processing, then the downlink radio frequency output signal of output expectation; The descending receiving filter 207 of another Lu Zejing is isolated fsk signal, delivers to far-end FSK208 demodulation.Far-end microprocessor controller 210 as shown in Figure 6, single-chip microcomputer with AD translation function, in the present embodiment, adopt the MSP430F147 chip, and have two serial ports, serial ports 1 is connected with far-end FSK208, its chip model is CC1000, be used for the transfer of data between far away, the near-end, microcontroller serial port 2 is connected with host computer, is used for communicating by letter with host computer, realizes human-computer dialogue, make module have the real-time monitoring module parameter function by programming, its communication interface meets UNICOM's united net management agreement and similar agreement.I/O4 controls the level control rf gain of the numerical-control attenuator HMC273 pin of descending received RF treatment circuit 206, and interface I/O5 is used for being provided with and monitoring FSK chip; By each parameter monitoring amount of ADC input interface pin connection module, be respectively: from the luminous power of up optical transmitting set 212 and the detection voltage of reflector photoelectric current; From the luminous power of the up optical transmitting set 202 of diversity and the detection voltage of reflector photoelectric current; Input optical power from descending optical receiver 204 detects voltage.Single-chip microcomputer can be realized each parameter (laser diode current of real-time monitoring module by software, luminous power, received optical power, radio frequency input and output power, parameters such as temperature), realize other function, such as active alarm, the adjustment of luminous power software, radio frequency link AGC, the adjustment of rf gain software, functions such as radio frequency ALC are set.
Claims (6)
1, the near-end radio frequency photoelectric conversion module in the diversity reception direct discharging station comprises:
One descending optical transmitting set is used for a descending radio-frequency input signals is converted to the light signal that wavelength is λ 1; One near-end WDM device, comprise first wavelength division multiplexer and second wavelength division multiplexer, first wavelength division multiplexer is connected with an end of single fiber, the other end of single fiber is used for being connected with far-end, this single fiber input is from the two-way uplink optical signal of far-end, its wavelength is respectively λ 2, λ 3, and by described first wavelength division multiplexer total reflection to the second wavelength division multiplexer, light signal and transmission peak wavelength that this second wavelength division multiplexer reflection wavelength is λ 2 are the light signal of λ 3; One up optical receiver, the wavelength that is used to receive after described second wavelength division multiplexer reflection is the light signal of λ 2 and converts thereof into up radiofrequency signal output; The up optical receiver of one diversity, the wavelength that is used to receive after the described second wavelength division multiplexer transmission is the light signal of λ 3 and converts thereof into the up radiofrequency signal output of diversity; It is characterized in that, also comprise: a near-end microprocessor controller is the single-chip microcomputer of a band AD conversion, has: two serial ports, and serial ports 1 is connected with near-end FSK, is used for far, the transfer of data between the near-end; Serial ports 2 is connected with host computer, is used for host computer communication, realizes that human-computer dialogue makes module have real-time monitoring parameter function by programming, and its communication interface meets UNICOM's united net management agreement and similar agreement; Interface I/O1 controls the numerical-control attenuator of up received RF treatment circuit; The numerical-control attenuator of the up received RF treatment circuit of interface I/O2 control diversity; Interface I/O3 is used for being provided with and monitoring FSK chip; By each parameter monitoring amount of ADC input interface pin connection module, its interface pin inserts respectively: the detection voltage of the luminous power of descending optical transmitting set and laser optical electric current; The input optical power of up optical receiver detects voltage; The input optical power of the up optical receiver of diversity detects voltage; The radio-frequency power of downlink rf processing circuitry detects voltage; The radio-frequency power of up received RF treatment circuit detects voltage; The radio-frequency power of the up received RF treatment circuit of diversity detects voltage.
2, the near-end radio frequency photoelectric conversion module in the diversity reception direct discharging station according to claim 1 is characterized in that, described near-end microprocessor controller is single-chip microcomputer MSP430F147.
3, the near-end radio frequency photoelectric conversion module in the diversity reception direct discharging station according to claim 1 is characterized in that, described near-end FSK is chip CC1000.
4, a kind of corresponding far end radio frequency photoelectric conversion module of uplink and downlink signal that is used for transmitting and receiving with the near-end radio frequency photoelectric conversion module of the described diversity reception direct discharging station of claim 1 comprises:
The up optical transmitting set of one diversity is used for the up radio-frequency input signals of a diversity is converted to the light signal that wavelength is λ 3; One up optical transmitting set is used for a up radio-frequency input signals is converted to the light signal that wavelength is λ 2; One far-end WDM device, comprise the 3rd wavelength division multiplexer and the 4th wavelength division multiplexer, the 3rd wavelength division multiplexer is connected with an end of single fiber, the other end of single fiber is used for being connected with near-end, this single fiber input is λ 1 light signal from the wavelength of going on the way of near-end, the 4th wavelength division multiplexer all is incident to the 3rd wavelength division multiplexer after reflecting the light signal that light signal that described wavelength is λ 2 and the described wavelength of transmission be λ 3, is done after the total reflection by the up near-end that exports to of single fiber by it; Described wavelength is that the light signal of λ 1 is then through the 3rd wavelength division multiplexer transmission; Descending optical receiver, the wavelength that is used to receive after described the 3rd wavelength division multiplexer transmission is the light signal of λ 1 and converts thereof into downlink radio-frequency signal output; It is characterized in that, also comprise: a far-end microprocessor controller, be the single-chip microcomputer of a band AD conversion, have two serial ports, serial ports 1 is connected with near-end FSK, be used for the transfer of data between far away, the near-end, microcontroller serial port 2 is connected with host computer, is used for realizing human-computer dialogue with host computer communication, make module have real-time monitoring parameter function by programming, its communication interface meets UNICOM's united net management agreement and similar agreement; Interface I/O4 controls the voltage control rf gain of the numerical-control attenuator pin of descending received RF treatment circuit; Interface I/O5 is used for being provided with and monitoring FSK chip; By each parameter monitoring amount of ADC input interface pin connection module, its interface pin inserts respectively: from the luminous power of up optical transmitting set and the detection voltage of reflector photoelectric current; From the luminous power of the up optical transmitting set of diversity and the detection voltage of reflector photoelectric current; Input optical power from descending optical receiver detects voltage.
5, the far end radio frequency photoelectric conversion module in the diversity reception direct discharging station according to claim 1 is characterized in that, described far-end microprocessor controller is a single-chip microcomputer MSP430F147.
6, the far end radio frequency photoelectric conversion module in the diversity reception direct discharging station according to claim 1 is characterized in that, described far-end FSK is chip CC1000.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200645582U CN2831622Y (en) | 2005-09-12 | 2005-09-12 | Near far end RF photoelectric converting modular in system of diversity reception direct-emitting station |
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2005200645582U CN2831622Y (en) | 2005-09-12 | 2005-09-12 | Near far end RF photoelectric converting modular in system of diversity reception direct-emitting station |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102281094A (en) * | 2010-06-08 | 2011-12-14 | 佳律通信设备(上海)有限公司 | Optical fiber cable repeater device with diversity reception function |
| CN102855155A (en) * | 2012-06-21 | 2013-01-02 | 伟创力电子技术(苏州)有限公司 | Automatic programming and functional test all-in-one machine for light-radio frequency transceiving module |
| CN109831254A (en) * | 2017-11-23 | 2019-05-31 | 通号通信信息集团上海有限公司 | A kind of optic-fiber repeater system using wavelength-division multiplex technique |
| CN114944871A (en) * | 2022-07-04 | 2022-08-26 | 中交一公局第七工程有限公司 | Signal transmission system |
-
2005
- 2005-09-12 CN CNU2005200645582U patent/CN2831622Y/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102281094A (en) * | 2010-06-08 | 2011-12-14 | 佳律通信设备(上海)有限公司 | Optical fiber cable repeater device with diversity reception function |
| CN102855155A (en) * | 2012-06-21 | 2013-01-02 | 伟创力电子技术(苏州)有限公司 | Automatic programming and functional test all-in-one machine for light-radio frequency transceiving module |
| CN102855155B (en) * | 2012-06-21 | 2015-05-06 | 伟创力电子技术(苏州)有限公司 | Automatic programming and functional test all-in-one machine for light-radio frequency transceiving module |
| CN109831254A (en) * | 2017-11-23 | 2019-05-31 | 通号通信信息集团上海有限公司 | A kind of optic-fiber repeater system using wavelength-division multiplex technique |
| CN109831254B (en) * | 2017-11-23 | 2023-10-10 | 通号通信信息集团上海有限公司 | Optical fiber repeater system using wavelength division multiplexing technology |
| CN114944871A (en) * | 2022-07-04 | 2022-08-26 | 中交一公局第七工程有限公司 | Signal transmission system |
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