CN203014823U - Dual-frequency intelligent optical radio frequency integrated terminal - Google Patents
Dual-frequency intelligent optical radio frequency integrated terminal Download PDFInfo
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- CN203014823U CN203014823U CN 201220520444 CN201220520444U CN203014823U CN 203014823 U CN203014823 U CN 203014823U CN 201220520444 CN201220520444 CN 201220520444 CN 201220520444 U CN201220520444 U CN 201220520444U CN 203014823 U CN203014823 U CN 203014823U
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Abstract
The utility model discloses a dual-frequency intelligent optical radio frequency integrated terminal, a monitoring control human-machine interface is provided, the whole optical module is fully in a controlled state, the controllability of an optical fiber repeater is greatly raised, the management and maintenance work of the repeater is facilitated, a dual system transmission design circuit is supported at the same time, and a problem of difficult system integration is solved. Two indoor dual-frequency antennas can be supported by one dual-frequency intelligent optical radio frequency integrated terminal at the same time, and an indoor coverage problem is solved well. According to the structural design of the dual-frequency intelligent optical radio frequency integrated terminal, the project construction and line connecting problems are facilitated. The intelligent level of the dual-frequency intelligent optical radio frequency integrated terminal is high, and the design of an indoor distribution system is simplified. According to the fiber repeater applied with an intelligent optical module, the reliability of repeater monitoring is effectively raised, the human-machine interface is humanized, and the inspection, production, debugging, opening and maintenance of the module are more convenient.
Description
Technical field
The utility model relates to a kind of analog optical fiber direct discharging station that is applied in, and relates in particular to the radio frequency integrated terminal of a kind of double frequency intelligent optical.
Background technology
Show according to statistics, nearly 80% 3G high-speed communication traffic occurs in indoor mostly.The broadband high-speed data service ability of 3G can realize wireless IP operation well, and indoor covering system is had higher requirement.The indoor covering system that the demand that namely satisfies the 3G high-speed wideband as one of He Jianshe satisfies again low speed voice telephone traffic amount demand is an important problem.The demand of the not competent high speed data transfer of tradition indoor distributed system, three kinds of modes of the general employing of traditional indoor covering system: the mode that leaky cable mode, electric distribution mode (mode that coaxial cable extends), coaxial cable combine with fiber distribution.What domestic each mobile operator used in a large number at present is electric distribution mode.Leaky cable is generally used for the covering to environment such as subway, tunnels.Than other modes, the leaky cable cost is very high, and loss is large, distance is short, and leaky cable itself is heavy, and is particularly inner at building, constructional difficulties.And the digital fiber indoor distributed system, its equipment price is higher, and system cost is higher may be the large obstacle that it can not large-scale application.The electricity distribution mode can be divided into active and passive compartment system dual mode.Passive compartment system is signal source+DAS (Distributed Antenna System) mode, the radio-frequency power of signal source arrives antenna transmission by power divider (power splitter), coupler, attenuator, feeder line etc., and passage in transit distributes the dielectric loss of loss, cable propagation loss and device.Active DAS system is mainly between signal source and antenna, namely has source device on cable is along the line, such as trunk amplifier (dried putting) etc., and the compensation that the cable transmission loss is carried out.Because active equipment brings noise accumulation and non-linear penalties, power system capacity and stability are brought negative effect.Therefore, the unsuitable excessive use of active equipment just uses at some long branch roads of cable, in order to the large cable loss of compensate for slower.Therefore the analog optical fiber indoor distributed system is a highest scheme of cost performance.
Independent 1 system of the general support of the far-end optical module of traditional analog optical fiber indoor distributed system, 1 antenna causes indoor covering inequality signal even.And increasing wireless communication system causes repeatedly constructing, and well layout, space to be preserved a little less than building is required more and more higher, and numerous antenna points are difficult to accomplish indoor attractive in appearance, clean and tidy, unified, and it is the inexorable trend of indoor covering that many nets are unified.
Original smooth transceiver terminal module, intellectuality and integrated level are not high, and the power output grade is low, if need dual-frequency system to cover, need outside duplexer and power amplifier module and the power module of increasing, could realize that multi frequency system covers, cause line complicated, reliability reduces, and cost increases.And former generation optical transceiver module terminal is except luminous/receipts optical power monitoring, luminous/receipts light alarm detection and rf gain are adjusted function, have lacked the functions such as supervision control such as the LD bias current is monitored, ATT controls automatically, the FSK working condition detects, the fsk signal received power is monitored, the FSK operating state arranges.
The utility model content
The technical problems to be solved in the utility model has been to provide a kind of radio frequency integrated terminal of double frequency intelligent optical of supporting simultaneously dual system Transmission Design circuit.
for solving the problems of the technologies described above, the utility model is realized by following scheme: the radio frequency integrated terminal of double frequency intelligent optical, it is characterized in that: described terminal mainly comprises four multiplexers, 1 stage gain amplifier tube, 1 grade of LNA amplifier tube, the LD laser, CWDM coarse wavelength division multiplexer device, opto-electronic conversion PD module, the RF duplexer, the ATT three-phase electrical energy computation chip, the DRIVE access means, the MCU controller, described four multiplexer one ends are electrically connected to the double frequency domestic aerial, the other end is electrically connected to 1 stage gain amplifier tube, 1 grade of LNA amplifier tube, described 1 stage gain amplifier tube, 1 grade of LNA amplifier tube is input in the LD laser after closing the road, the LD laser is electrically connected to CWDM coarse wavelength division multiplexer device.
Described CWDM coarse wavelength division multiplexer device is electrically connected to opto-electronic conversion PD module.
Described RF duplexer one end is electrically connected to opto-electronic conversion PD module, and the other end connects the ATT three-phase electrical energy computation chip.
Described ATT three-phase electrical energy computation chip is electrically connected to the DRIVE access means, and the other end is electrically connected to the MCU controller.
Described MCU controller one end connects opto-electronic conversion PD module input by the FSKRX signal, and the other end connects the LD laser output by the FSKTX signal.
The utility model has the advantages that: provide to monitor the control man-machine interface, make whole optical module be in slave mode fully, make the controllability of optical fiber repeater obtain tremendous increase, facilitated the work that administers and maintains of repeater, concrete advantage is as follows:
1) support, simultaneously the Transmission Design circuit of dual system, the problem of the integrated difficulty of resolution system.
2), 1 radio frequency integrated terminal of double frequency intelligent optical can support 2 indoor dual-band antennas simultaneously, well solves indoor covering problem.
3), the structural design of the radio frequency integrated terminal of double frequency intelligent optical, facilitate engineering construction, the line problem.
4), the intelligent degree of the radio frequency integrated terminal of double frequency intelligent optical is high, simplifies the design of indoor distributed system.
Use the optical fiber repeater of intelligent optical module, effectively improve the reliability of monitoring repeater, the man-machine interface of hommization, make module check, production, debug, open and safeguard convenient.
Description of drawings
Below in conjunction with accompanying drawing, the utility model is elaborated.
Fig. 1 is the radio frequency integrated terminal architecture schematic diagram of the utility model intelligent optical;
Fig. 2 is the radio frequency integrated terminal inner circuit structure diagram of the utility model intelligent optical.
Embodiment
as Fig. 1, shown in Figure 2, the radio frequency integrated terminal of double frequency intelligent optical, it is characterized in that: described terminal mainly comprises four multiplexers 1, 1 stage gain amplifier tube 2, 1 grade of LNA amplifier tube 3, LD laser 4, CWDM coarse wavelength division multiplexer device 5, opto-electronic conversion PD module 7, RF duplexer 8, ATT three-phase electrical energy computation chip 9, DRIVE access means 10, MCU controller 11, described four multiplexer 1 one ends are electrically connected to the double frequency domestic aerial, the other end is electrically connected to 1 stage gain amplifier tube 2, 1 grade of LNA amplifier tube 3, described 1 stage gain amplifier tube 2, 1 grade of LNA amplifier tube 3 is input in LD laser 4 after closing the road, LD laser 4 is electrically connected to CWDM coarse wavelength division multiplexer device 5, described CWDM coarse wavelength division multiplexer device 5 is electrically connected to opto-electronic conversion PD module 7, RF duplexer one end is electrically connected to opto-electronic conversion PD module 7, the other end connects ATT three-phase electrical energy computation chip 9, described ATT three-phase electrical energy computation chip 9 is electrically connected to DRIVE access means 10, the other end is electrically connected to MCU controller 11.Described MCU controller 11 1 ends connect opto-electronic conversion PD module 7 inputs by the FSKRX signal, and the other end connects LD laser 4 outputs by the FSKTX signal.
Embodiment:
Fig. 1 has shown the basic framework of the radio frequency integrated terminal of double frequency intelligent optical, far-end is by upward signal process medium four multiplexers 1 of double frequency domestic aerial duplex mouthful input, realize the tape input of selecting of two-frequency signal, 2 road signals amplify through 1 grade of LNA amplifier tube 3 and 1 stage gain amplifier tube 2 respectively, then close the road and be input in LD laser 4, realize the electric light conversion.The control signal that the while repeater will be launched also is input to LD laser 4, realizes modulation output altogether, shared one road fiber optic cables.The drive circuit of LD laser 4 will be accomplished low noise, high stability.The luminous power of LD laser 4 will be stablized, and is insensitive to temperature and humidity, requires in addition it to keep well linear.Simultaneously, due to fault, luminous power need to have auto-alarm function when sharply reducing even without luminous power when LD laser 4.Arrive this, this road upstream rf signal, one road fsk signal have become specific wavelength light signal (for example 1310nm), and this light signal is sent into respectively optical fiber through CWDM coarse wavelength division multiplexer device 5 and passed to near-end intelligence 1 and drag 8 optical modules.At the smooth radiating portion circuit of LD laser 4,4 biasings of LD laser are the keys of LD laser 4 steady operations with the APC loop circuit.The result of this partial circuit design will reach following requirement:
A: bias current is stable, and ripple-free occurs, and current protecting function is provided;
The B:APC loop performance is good, and LD laser 4 power keep stable in the set point of temperature scope;
C: circuit has the temperature-compensating ability, keeps normal operation in wide temperature range;
D: have the power-on protection function, the damage of impulse current to LD laser 4 of avoiding starting shooting;
The effect of CWDM coarse wavelength division multiplexer device 5 is that the laser of certain wavelength (for example 1550nm) is coupled into optical fiber 6, and the laser (for example 1310nm) of another kind of wavelength is separated from optical fiber 6.Realize completing the transmission of uplink and downlink signals by this form in a monomode fiber, saved the capacity of an optical fiber 6.For CWDM coarse wavelength division multiplexer device 5, the isolation between its two kinds of wavelength light is very important parameter.drag the light signal (for example 1550nm) that 8 optical modules transmit through optical fiber 6 to be input to opto-electronic conversion PD module 7 through CWDM coarse wavelength division multiplexer device 5 by near-end intelligence 1, be converted to the radio frequency downstream signal by opto-electronic conversion PD module 7, the RF downstream signal is isolated DCS and WCDMA two-frequency signal through too high spacer medium RF duplexer 8, two-frequency signal is respectively through 2 stage gain amplifier tubes, 1 progression controlling attenuation, output to respectively under the DCS of medium four multiplexers 1 line output radio frequency mouth under line output radio frequency mouth and WCDMA after 1 grade of drive amplification and final stage power amplification, finally realize that by 2 dual-band antenna ports wireless signal covers.
Optical receiving circuit in the radio frequency integrated terminal of double frequency intelligent optical, the requirement of this partial circuit design is:
1), transmission line characteristic impedance is 50 ohm, guarantees the continuity of impedance;
2), guarantee that rear class will have enough gain amplifiers, maximum gain can reach 25dB;
3), circuit is high linear, third order intermodulation is less than a 60dBc;
4), good noiseproof feature, output bottom noise is less than a 13d0Bm/Hz.
And drag control signal that 8 optical module terminals send here also out to pass to MCU controller Unit 11 in the radio frequency integrated terminal of double frequency intelligent optical by 7 demodulation of opto-electronic conversion PD module by near-end intelligence 1, realize various control functions.Work as equally the luminous power that receives very little, in the situation that perhaps opto-electronic conversion PD module 7 is damaged, also unglazed warning will be arranged.The digital communication of optical module and repeater is completed by RS232 interface or RS485 interface, and the conversion of corresponding signal level is completed by the chip of special use.The Main Function of MCU controller 11 is exactly the sending and receiving of controlling fsk data, completes the unloading of wanting data, the functions such as framing.Simultaneously, MCU controller 11 also will be completed the sampling of each monitoring parameter and the generation of control level.
The above is only preferred implementation of the present utility model; not thereby limit the scope of the claims of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes the utility model specification and accompanying drawing content to do; or directly or indirectly be used in other relevant technical field, all in like manner be included in scope of patent protection of the present utility model.
Claims (5)
1. the radio frequency integrated terminal of double frequency intelligent optical, it is characterized in that: described terminal mainly comprises four multiplexers (1), 1 stage gain amplifier tube (2), 1 grade of LNA amplifier tube (3), LD laser (4), CWDM coarse wavelength division multiplexer device (5), opto-electronic conversion PD module (7), RF duplexer (8), ATT three-phase electrical energy computation chip (9), DRIVE access means (10), MCU controller (11), described four multiplexer (1) one ends are electrically connected to the double frequency domestic aerial, the other end is electrically connected to 1 stage gain amplifier tube (2), 1 grade of LNA amplifier tube (3), described 1 stage gain amplifier tube (2), 1 grade of LNA amplifier tube (3) is input in LD laser (4) after closing the road, LD laser (4) is electrically connected to CWDM coarse wavelength division multiplexer device (5).
2. according to the radio frequency integrated terminal of double frequency intelligent optical claimed in claim 1, it is characterized in that: described CWDM coarse wavelength division multiplexer device (5) is electrically connected to opto-electronic conversion PD module (7).
3. according to the radio frequency integrated terminal of double frequency intelligent optical claimed in claim 1, it is characterized in that: described RF duplexer one end is electrically connected to opto-electronic conversion PD module (7), and the other end connects ATT three-phase electrical energy computation chip (9).
4. according to the radio frequency integrated terminal of the described double frequency intelligent optical of claim 1 or 3, it is characterized in that: described ATT three-phase electrical energy computation chip (9) is electrically connected to DRIVE access means (10), and the other end is electrically connected to MCU controller (11).
5. according to the radio frequency integrated terminal of double frequency intelligent optical claimed in claim 1, it is characterized in that: described MCU controller (11) one ends connect opto-electronic conversion PD module (7) input by the FSKRX signal, and the other end connects LD laser (4) output by the FSKTX signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220520444 CN203014823U (en) | 2012-10-11 | 2012-10-11 | Dual-frequency intelligent optical radio frequency integrated terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220520444 CN203014823U (en) | 2012-10-11 | 2012-10-11 | Dual-frequency intelligent optical radio frequency integrated terminal |
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| Publication Number | Publication Date |
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| CN203014823U true CN203014823U (en) | 2013-06-19 |
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| CN 201220520444 Expired - Fee Related CN203014823U (en) | 2012-10-11 | 2012-10-11 | Dual-frequency intelligent optical radio frequency integrated terminal |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105827309A (en) * | 2016-03-10 | 2016-08-03 | 文成县刀锋科技有限公司 | Indoor LED visible light communication system |
| CN111884725A (en) * | 2020-07-24 | 2020-11-03 | 中国电子科技集团公司第三十四研究所 | Multipurpose broadband intelligent radio frequency photoelectric integrated transmitting and receiving assembly |
-
2012
- 2012-10-11 CN CN 201220520444 patent/CN203014823U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105827309A (en) * | 2016-03-10 | 2016-08-03 | 文成县刀锋科技有限公司 | Indoor LED visible light communication system |
| CN111884725A (en) * | 2020-07-24 | 2020-11-03 | 中国电子科技集团公司第三十四研究所 | Multipurpose broadband intelligent radio frequency photoelectric integrated transmitting and receiving assembly |
| CN111884725B (en) * | 2020-07-24 | 2024-05-28 | 中国电子科技集团公司第三十四研究所 | Multipurpose broadband intelligent radio frequency photoelectric integrated transmitting and receiving assembly |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20171011 |