CN201022197Y - Optical fiber repeater with same and different frequency forwarding function - Google Patents
Optical fiber repeater with same and different frequency forwarding function Download PDFInfo
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- CN201022197Y CN201022197Y CNU2007200067223U CN200720006722U CN201022197Y CN 201022197 Y CN201022197 Y CN 201022197Y CN U2007200067223 U CNU2007200067223 U CN U2007200067223U CN 200720006722 U CN200720006722 U CN 200720006722U CN 201022197 Y CN201022197 Y CN 201022197Y
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Abstract
The utility model relates to a fiber repeater with a common frequency and different frequency transmitting function, comprising a proximate device and a remote device, wherein the proximate device is connected with the remoter device by the fiber. In the proximate device, three ends of a circulator are separately connected with a first frequency receiving or sending channel of a duplexer, the frequency output of an optical module and a first input of a combiner. A second input of the combiner is connected with a second frequency channel of the duplexer and the output of the combiner is connected with the frequency input of the optical module. In the remote device, an input of a divider is connected with the frequency input of the optical module. A first frequency output of the divider is connected with a first main power amplifier input. A second main power amplifier is arranged between a second frequency output of the divider and a second frequency receiving channel of the duplexer. A low noise amplifier output is connected with a frequency output of the optical module. Three ends of the first frequency switch which is controlled by a controller for switching are separately connected with the first frequency receiving or sending channel of a duplexer, a low noise amplifier input and the first main power amplifier output.
Description
Technical field
The utility model relates to a kind of optical fiber repeater same, different-frequency forwarding function that has, in particular for having of railroad train wireless dispatching communication system optical fiber repeater same, different-frequency forwarding function.
Background technology
The railroad train wireless dispatching communication system is a kind of visual plant that guarantees traffic safety, and this system mainly comprises dispatching telephone control board, station (base station) equipment, locomotive equipment, handheld device etc.Along with improving constantly of railway production and operation efficient, Transport Safety requirement and communication modernization level, the railroad train wireless dispatching communication system will realize that not only train radio is dispatched, rail yard is shunt Speech Communication functions such as communication, railway section mobile communication, has also born the wireless transmission task of data such as running number transmission, train tail wind pressure transfer of data, road junction pre-(newspaper) police simultaneously.On the other hand, the highway section of hilly country is long because Chinese Railway is in, interval bend and tunnel are numerous, and the railroad train wireless dispatching communication system must realize that non-blind area carries out lid.
Known, repeater (repeater) is a kind of equipment that plays signal enhancing and relaying in the wireless communication transmissions process, is widely used in the covering in radio communication blind area and weak district.Use the repeater can guarantee under the prerequisite that does not increase base station number that communication network extends covering, it is good to have anti-interference, simple in structure, small investment and advantage such as easy for installation.Existing repeater mainly contains wireless discharging-directly station, optical fiber repeater, frequency-shift repeater etc.Wherein, optical fiber repeater comprises near-end machine and the remote termination that is connected by optical fiber, and near-end machine and remote termination include radio frequency unit and light unit.Its operation principle is: in down link, the near-end machine receives base station signal by coupler or donor antenna, handling the back by radio frequency unit is light signal by the light cell translation, and the process Optical Fiber Transmission is to remote termination, the light unit of remote termination is converted to the signal of telecommunication to light signal, after radio frequency unit is handled amplification, send the coverage goal zone by retransmitting antenna; In up link, the signal of retransmitting antenna receiving mobile emission by being transferred to the near-end machine after the remote termination treatment conversion, transmits go back to the base station at last.
At present, the interval overlay device that uses in the railway wireless communication system comprises: in the hole, outer tunnel, hole alien frequencies repeater, cross complaint formula repeater, head and the tail platform repeater, wireless discharging-directly station, alien frequencies optical fiber repeater, common frequency optical fiber repeater etc., though above equipment can solve some interval blind area communications, but all there is deficiency in various degree, all adopt alien frequencies signal relay pass-through mode as tunnel repeater, can not satisfy with audio data and transmit, and the investment of leakage cable is higher relatively; Cross complaint repeater and head and the tail platform all adopt a frequency arrowband mode, can not satisfy the needs that data transmit; The alien frequencies optical fiber repeater can not satisfy equally with audio data to be transmitted; Wireless discharging-directly station mainly adopts homogenous frequency signal relaying pass-through mode, and is identical with common frequency optical fiber repeater, do not possess different-frequency forwarding function, the communicating requirement in the time of can not satisfying the locomotive long routing cover race of each Railway Bureau.
(operating frequency of station console and locomotive platform is 457～459MHz) because the existing employing of each equipment of railroad train wireless dispatching communication system is with the frequency working method, the alien frequencies of employing working method is arranged again, and (station console tranmitting frequency, locomotive platform receive frequency are 467～469MHz, and station console receive frequency, locomotive platform tranmitting frequency are 457～459MHz).For example, in railway B system communication system section (promptly the single duplex of four frequency groups is compatible), that dispatching command transmits employing is alien frequencies 467.700MHz/457.700MHz, what running number transmitted employing is with frequency 457.550MHz, the same frequency 457.700MHz that train scheduling communication is adopted on the Plain then adopts alien frequencies 467.700MHz in the tunnel, row mantissa is to transmit with frequency 457.700MHZ according to what transmit employing, the railcar equipment of One's name is legion particularly, major part all adopts joining common-frequency simplex C standard.And existing trunking does not possess the existing broadband signal repeat function of transmitting, having alien frequencies to transmit with frequency, can not satisfy the railroad train wireless dispatching communication system all can carry out voice communication and transfer of data at the section of different systems needs.
Summary of the invention
The purpose of this utility model provides a kind of optical fiber repeater same, different-frequency forwarding function that has.
Having that the utility model provides optical fiber repeater same, different-frequency forwarding function, comprise the near-end machine and the remote termination that connect by optical fiber, it is characterized in that: the near-end facility have duplexer, circulator, mixer and optical module, the common terminal of circulator, receiving terminal, transmitting terminal connect the first frequency of duplexer respectively and receive/send out passage, the radio-frequency (RF) output end of optical module, the first input end of mixer, and second input of mixer connects the second frequency transmission channel of duplexer, the rf inputs that its output connects optical module; And
Remote termination has optical module, splitter, the first main power amplifier, the second main power amplifier, low noise amplifier, first radio-frequency (RF) switch, duplexer and controller, the input of splitter connects the radio frequency receiving terminal of optical module, the input of the first main power amplifier connects a first frequency output of splitter, the second main power amplifier is connected between the second frequency receive path of second frequency output of splitter and duplexer, the output of low noise amplifier connects the radio-frequency transmissions end of optical module, the common terminal of first radio-frequency (RF) switch, normal-closed end, Chang Kaiduan connects the first frequency of duplexer respectively and receives/send out passage, the input of low noise amplifier, the output of the first main power amplifier, first radio-frequency (RF) switch is connected with controller, and switch so that the input of low noise amplifier by controller control, the output of the first main power amplifier is selectively received/is sent out passage with the first frequency of duplexer and is connected.
Best, remote termination also has the first non-firm power amplifier and second radio-frequency (RF) switch, the first non-firm power amplifier input terminal connects another first frequency output of splitter, the common terminal of second radio-frequency (RF) switch, normal-closed end, the Chang Kaiduan of Chang Kaiduan difference first radio-frequency (RF) switch, the output of the first main power amplifier, the output of the first non-firm power amplifier, second radio-frequency (RF) switch is connected with controller and is switched so that the first main power amplifier, the first non-firm power amplifier are connected with the Chang Kaiduan of first radio-frequency (RF) switch by controller control.
Best, controller switches second radio-frequency (RF) switch according to the detected first main power amplifier output signal size control.
Best, remote termination also has the second non-firm power amplifier and the 3rd radio frequency switch, the second non-firm power amplifier input terminal connects another second frequency output of splitter, the common terminal of the 3rd radio frequency switch, normal-closed end, Chang Kaiduan is the second frequency receive path of duplexer respectively, the output of the second main power amplifier, the output of the second non-firm power amplifier, the 3rd radio frequency switch is connected with controller, and switch selectively to make the second main power amplifier by controller control, the second non-firm power amplifier is connected with the second frequency receive path of duplexer.
Best, controller switches the 3rd radio frequency switch according to the detected second main power amplifier output signal size control.
Best, the first main power amplifier has input detecting circuit, and controller connects input detecting circuit and controls switching first radio-frequency (RF) switch according to the detected incoming signal level of this testing circuit.
Best, the first main power amplifier, the first non-firm power amplifier all have input detecting circuit, and controller connects input detecting circuit and controls switching first radio-frequency (RF) switch according to the detected incoming signal level of the input detecting circuit of selected power amplifier.
Best, the operating state of controller corresponding transform power amplifier when radio-frequency (RF) switch is switched in control.
Best, each power amplifier all has enable switch, and controller is connected and passes through to trigger the operating state of enable switch transform power amplifier with enable switch.
Best, all be connected with numerical-control attenuator between the radio-frequency transmissions end of the output of the mixer of near-end machine and optical module and between the radio frequency receiving terminal of the receiving terminal of circulator and optical module.
Best, the burglar alarm that is connected with controller also is installed, burglar alarm comprises Infrared Detectors and/or video-unit.
Having that the utility model provides optical fiber repeater same, different-frequency forwarding function, its beneficial effect is: except having the pilot frequency communication passage, owing to adopt handoff technique with frequency uplink and downlink passage, increased with communication port frequently, also realized simultaneously closing road and shared a pair of optical module transmission with, alien frequencies signal.Its simple in structure, dependable performance, possess same, the compatible working method of alien frequencies, be applicable to the covering in railway wireless communication blind district and weak district, can satisfy the railroad train wireless dispatching communication system all can carry out voice communication and transfer of data at the section of different systems needs.And has an anti-theft alarm function.
Below, by specific embodiment concrete structure and the beneficial effect of having of providing of the utility model with the optical fiber repeater of, different-frequency forwarding function is elaborated.
Description of drawings
Fig. 1 is the formation schematic diagram that has with the optical fiber repeater of, different-frequency forwarding function.
Preferred forms
The utility model provides has optical fiber repeater with, different-frequency forwarding function, is used for the railroad train wireless dispatching communication system of railway B system communication system section (promptly four the single duplex of group is compatible frequently), the covering in realization radio communication blind area and weak district.Known, above-mentioned railroad train wireless dispatching communication system adopts together, the independent semiduplex working method of alien frequencies is carried out voice communication and transfer of data, the operating frequency of station console and locomotive platform is 457～459MHz (centre frequency 458MHz) when promptly working with frequency, station console tranmitting frequency, locomotive platform receive frequency are 467～469MHz (centre frequency 468MHz) during alien frequencies work, and station console receive frequency, locomotive platform tranmitting frequency are 457～459MHz (centre frequency 458MHz).
Present embodiment provides has optical fiber repeater with, different-frequency forwarding function, can carry out uplink and downlink 458MHz with transmitting frequently and up 458MHz, descending 468MHz alien frequencies transmit.This optical fiber repeater comprises near-end machine, remote termination and optical fiber, its constitute and each module to be connected reference shown in Figure 1:
The near-end machine has donor antenna, duplexer, circulator, two mixers, numerical-control attenuator and optical module.Duplexer has common terminal and 458MHz receives/send out passage and 468MHz transmission channel.Donor antenna is connected to the common terminal of duplexer.The 458MHz that the common terminal of circulator, receiving terminal, emission port connect duplexer respectively receives/sends out passage, the radio-frequency (RF) output end of optical module, the first input end of two mixers.Second input of two mixers connects the 468MHz transmission channel of duplexer, the rf inputs that its output connects optical module.Numerical-control attenuator is connected between the radio-frequency transmissions end of the output of two mixers and optical module and between the radio frequency receiving terminal of the receiving terminal of circulator and optical module.
Remote termination has optical module, four splitters, the descending main power amplifier of 458MHz, the descending non-firm power amplifier of 458MHz, the descending main power amplifier of 468MHz, the descending non-firm power amplifier of 468MHz, the up low noise amplifier of 458MHz, first radio-frequency (RF) switch, second radio-frequency (RF) switch, the 3rd radio frequency switch, duplexer, controller and retransmitting antenna.Duplexer has common terminal and 458MHz receives/send out passage and 468MHz receive path.Retransmitting antenna is connected to the common terminal of duplexer.Radio frequency receiving terminal, two 458MHz output that the input of four splitters connects optical module connects the descending main power amplifier of 458MHz, the descending non-firm power amplifier in of 458MHz, two 468MHz output respectively and connects the descending main power amplifier of 468MHz, the descending non-firm power amplifier in of 468MHz respectively.The output of the up low noise amplifier of 458MHz connects the radio-frequency transmissions end of optical module.The 458MHz that the common terminal of first radio-frequency (RF) switch, normal-closed end, Chang Kaiduan connect duplexer respectively receives/sends out passage, the input of the up low noise amplifier of 458MHz, the common terminal of second radio-frequency (RF) switch.The normal-closed end of second radio-frequency (RF) switch, Chang Kaiduan connect the output of the descending non-firm power amplifier of output, 458MHz of the descending main power amplifier of 458MHz respectively.The output of the 468MHz receive path of the common terminal of the 3rd radio frequency switch, normal-closed end, normal ported duplexer respectively, the output of the descending main power amplifier of 468MHz, the descending non-firm power amplifier of 468MHz.Controller comprises computer system and moves control program.
Wherein, first radio-frequency (RF) switch, second radio-frequency (RF) switch, the 3rd radio frequency switch also constitute control connection with controller, and are switched by controller control, and its operation principle is with reference to following.In addition, the descending main power amplifier of 458MHz, the descending non-firm power amplifier of 458MHz inside include input detecting circuit, each power amplifier all has enable switch, input detecting circuit and enable switch all constitute the control connection (not shown) with controller, and its concrete control procedure sees for details following.
The optical module of near-end machine is connected by optical fiber with the optical module of remote termination.
Having that the utility model provides optical fiber repeater same, different-frequency forwarding function can be operated in joining common-frequency simplex pattern and different single-frequency simplex, dual-mode.Its operation principle is described respectively below:
A) joining common-frequency simplex pattern
When downlink transfer, when the donor antenna of near-end machine receives 458MHz signal from station console, 458MHz passage by duplexer arrives circulator, transmitting terminal through circulator enters two mixers, be added to optical module and modulate the conversion of realization electric light, light signal arrives remote termination by Optical Fiber Transmission afterwards, optical module by remote termination carries out opto-electronic conversion, to come out from the radiofrequency signal demodulation of near-end machine, output to the descending main power amplifier of 458MHz through four splitters, the input detecting circuit of this power amplifier detects input signal, when incoming signal level surpasses threshold level (the big I of threshold level is regulated as required), testing circuit sends an identification signal to controller, Transistor-Transistor Logic level of controller output triggers the enable switch of this power amplifier, make this power amplifier be converted to operating state so that radiofrequency signal is amplified by holding state, the output signal of controller makes first radio-frequency (RF) switch carry out the passage switching simultaneously, the radiofrequency signal of power amplifier output is through second radio-frequency (RF) switch, the 458MHz channel transfer of the signalling channel of first radio-frequency (RF) switch and duplexer forwards to retransmitting antenna, realizes the 450MHz signal of the area of coverage is covered.
When uplink, when the retransmitting antenna of remote termination receives 458MHz signal from the locomotive platform, because first radio-frequency (RF) switch is normally closed at the up low noise amplifier input of 458MHz, thereby signal is input to low noise amplifier, carry out the electric light conversion through the optical module of sending into remote termination after amplifying, arrive the near-end machine by Optical Fiber Transmission then, similarly finish opto-electronic conversion by the optical module of near-end machine, receiving terminal and duplexing 458MHz channel transfer through circulator arrive donor antenna, are transmitted to station console.
In the above-mentioned course of work, when near-end machine and remote termination received the signal of station console and locomotive platform simultaneously, the program control up link by controller was set to the priority task state.
B) different single-frequency simplex, dual-mode
When downlink transfer, when the donor antenna of near-end machine receives 468MHz signal from station console, 468MHz passage by duplexer arrives two mixers, the optical module of sending into the near-end machine again carries out the electric light conversion, light signal arrives remote termination by Optical Fiber Transmission afterwards, optical module by remote termination carries out opto-electronic conversion, to come out from the radiofrequency signal demodulation of near-end machine, output to the descending main power amplifier of 468MHz through four splitters, power amplifier amplifies radiofrequency signal, forward to retransmitting antenna through the signalling channel of the 3rd radio frequency switch and the 468MHz channel transfer of duplexer again, realize the 468MHz signal of the area of coverage is covered.
When uplink, its transmission course is identical with the uplink of joining common-frequency simplex pattern.
Owing to adopt the alien frequencies mode of operation, so but but both also diplex operations of single-simplex operation of direct amplification machine.
Below, the operation principle of second radio-frequency (RF) switch, the 3rd radio frequency switch is carried out brief description.
Second radio-frequency (RF) switch, the 3rd radio frequency switch are respectively applied for selects descending primary, spare power amplifier of 458MHz and the descending primary, spare power amplifier of 468MHz.Its operation principle is: under normal condition, second radio-frequency (RF) switch, all normally closed output of the 3rd radio frequency switch at main power amplifier, the promptly preferential main power amplifier of use of selecting, controller detects the size of corresponding main power amplifier output signal respectively by second radio-frequency (RF) switch, the 3rd radio frequency switch.When main power amplifier breaks down, its output voltage changes, exporting a Transistor-Transistor Logic level in the controller this moment makes second radio-frequency (RF) switch or the 3rd radio frequency switch carry out the passage switching, to select to use the non-firm power amplifier, start simultaneously the non-firm power amplifier enable switch, make the non-firm power amplifier by keeping marquis's state exchange to operating state, and close the enable switch of main power amplifier, so that main power amplifier quits work.Controller produces main power amplifier fault alarm signal and issues webmaster, notifies the attendant to safeguard.
In addition, owing on the repeater or near it Infrared Detectors and/or video-unit are installed, Infrared Detectors, video-unit are connected with controller.When Infrared Detectors has detected the people near behind the equipment, send alarm and start video-unit simultaneously and take pictures, photo passes to network management center by network management and monitoring system, and on-the-spot evidence is provided in real time, solves the burglar alarm problem of equipment.
More than combine embodiment the utility model is illustrated, but this does not constitute restriction of the present utility model.Any modifications and variations of having done under same design also all belong to the scope that the utility model is protected.
Claims (11)
1. has optical fiber repeater same, different-frequency forwarding function, comprise the near-end machine and the remote termination that connect by optical fiber, it is characterized in that: the near-end facility have duplexer, circulator, mixer and optical module, the common terminal of circulator, receiving terminal, transmitting terminal connect the first frequency of duplexer respectively and receive/send out passage, the radio-frequency (RF) output end of optical module, the first input end of mixer, and second input of mixer connects the second frequency transmission channel of duplexer, the rf inputs that its output connects optical module; And remote termination has optical module, splitter, the first main power amplifier, the second main power amplifier, low noise amplifier, first radio-frequency (RF) switch, duplexer and controller, the input of splitter connects the radio frequency receiving terminal of optical module, the input of the first main power amplifier connects a first frequency output of splitter, the second main power amplifier is connected between the second frequency receive path of second frequency output of splitter and duplexer, the output of low noise amplifier connects the radio-frequency transmissions end of optical module, the common terminal of first radio-frequency (RF) switch, normal-closed end, Chang Kaiduan connects the first frequency of duplexer respectively and receives/send out passage, the input of low noise amplifier, the output of the first main power amplifier, first radio-frequency (RF) switch is connected with controller, and switch so that the input of low noise amplifier by controller control, the output of the first main power amplifier is selectively received/is sent out passage with the first frequency of duplexer and is connected.
2. according to claim 1 have together, the optical fiber repeater of different-frequency forwarding function, it is characterized in that: remote termination also has the first non-firm power amplifier and second radio-frequency (RF) switch, the first non-firm power amplifier input terminal connects another first frequency output of splitter, the common terminal of second radio-frequency (RF) switch, normal-closed end, Chang Kaiduan is the Chang Kaiduan of first radio-frequency (RF) switch respectively, the output of the first main power amplifier, the output of the first non-firm power amplifier, second radio-frequency (RF) switch is connected with controller, and switch selectively to make the first main power amplifier by controller control, the first non-firm power amplifier is connected with the Chang Kaiduan of first radio-frequency (RF) switch.
3. the optical fiber repeater that has with, different-frequency forwarding function according to claim 2 is characterized in that: controller switches second radio-frequency (RF) switch according to the detected first main power amplifier output signal size control.
4. according to claim 1 have together, the optical fiber repeater of different-frequency forwarding function, it is characterized in that: remote termination also has the second non-firm power amplifier and the 3rd radio frequency switch, the second non-firm power amplifier input terminal connects another second frequency output of splitter, the common terminal of the 3rd radio frequency switch, normal-closed end, Chang Kaiduan is the second frequency receive path of duplexer respectively, the output of the second main power amplifier, the output of the second non-firm power amplifier, the 3rd radio frequency switch is connected with controller, and switch selectively to make the second main power amplifier by controller control, the second non-firm power amplifier is connected with the second frequency receive path of duplexer.
5. the optical fiber repeater that has with, different-frequency forwarding function according to claim 4 is characterized in that: controller switches the 3rd radio frequency switch according to the detected second main power amplifier output signal size control.
6. the optical fiber repeater that has with, different-frequency forwarding function according to claim 1, it is characterized in that: the first main power amplifier has input detecting circuit, and controller connects input detecting circuit and controls switching first radio-frequency (RF) switch according to the detected incoming signal level of this testing circuit.
7. the optical fiber repeater that has with, different-frequency forwarding function according to claim 2, it is characterized in that: the first main power amplifier, the first non-firm power amplifier all have input detecting circuit, and controller connects input detecting circuit and controls switching first radio-frequency (RF) switch according to the detected incoming signal level of the input detecting circuit of selected power amplifier.
8. according to the described optical fiber repeater that has with, different-frequency forwarding function of each claim in the claim 1 to 7, it is characterized in that: the operating state of controller corresponding transform power amplifier when radio-frequency (RF) switch is switched in control.
9. the optical fiber repeater that has with, different-frequency forwarding function according to claim 8, it is characterized in that: each power amplifier all has enable switch, and controller is connected and passes through the operating state of triggering enable switch transform power amplifier with enable switch.
10. the optical fiber repeater that has with, different-frequency forwarding function according to claim 1 is characterized in that: all be connected with numerical-control attenuator between the radio-frequency transmissions end of the output of the mixer of near-end machine and optical module and between the radio frequency receiving terminal of the receiving terminal of circulator and optical module.
11. according to the described optical fiber repeater that has with, different-frequency forwarding function of each claim in the claim 1 to 7, it is characterized in that: the burglar alarm that is connected with controller also is installed, and burglar alarm comprises Infrared Detectors and/or video-unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200067223U CN201022197Y (en) | 2007-04-04 | 2007-04-04 | Optical fiber repeater with same and different frequency forwarding function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200067223U CN201022197Y (en) | 2007-04-04 | 2007-04-04 | Optical fiber repeater with same and different frequency forwarding function |
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| CN201022197Y true CN201022197Y (en) | 2008-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2007200067223U Expired - Lifetime CN201022197Y (en) | 2007-04-04 | 2007-04-04 | Optical fiber repeater with same and different frequency forwarding function |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101282180B (en) * | 2007-04-04 | 2011-02-02 | 泉州市铁通电子设备有限公司 | Optical fiber direct transport station with common/different-frequency forwarding function |
| CN101465697B (en) * | 2009-01-04 | 2011-09-21 | 耿直 | Optical fiber direct amplification and frequency conversion repeater and working method |
| CN103227676A (en) * | 2013-04-11 | 2013-07-31 | 三维通信股份有限公司 | Repeater realization device and method capable of realizing self detection |
| CN104270197A (en) * | 2014-09-28 | 2015-01-07 | 成都九华圆通科技发展有限公司 | Transmission system and method for transmitting wide frequency band simulating radio frequency signals through optical transmission media |
| WO2024103202A1 (en) * | 2022-11-14 | 2024-05-23 | 深圳市达驰通信有限公司 | Repeater and communication system |
-
2007
- 2007-04-04 CN CNU2007200067223U patent/CN201022197Y/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101282180B (en) * | 2007-04-04 | 2011-02-02 | 泉州市铁通电子设备有限公司 | Optical fiber direct transport station with common/different-frequency forwarding function |
| CN101465697B (en) * | 2009-01-04 | 2011-09-21 | 耿直 | Optical fiber direct amplification and frequency conversion repeater and working method |
| CN103227676A (en) * | 2013-04-11 | 2013-07-31 | 三维通信股份有限公司 | Repeater realization device and method capable of realizing self detection |
| CN103227676B (en) * | 2013-04-11 | 2015-07-22 | 三维通信股份有限公司 | Repeater realization method capable of realizing self detection |
| CN104270197A (en) * | 2014-09-28 | 2015-01-07 | 成都九华圆通科技发展有限公司 | Transmission system and method for transmitting wide frequency band simulating radio frequency signals through optical transmission media |
| CN104270197B (en) * | 2014-09-28 | 2018-02-06 | 成都九华圆通科技发展有限公司 | A kind of Transmission system and method that wide-band analog radio-frequency signal is transmitted using optical transmission medium |
| WO2024103202A1 (en) * | 2022-11-14 | 2024-05-23 | 深圳市达驰通信有限公司 | Repeater and communication system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20080213 Effective date of abandoning: 20070404 |