CN2826845Y - RF optical transport module for integrated RF power detection - Google Patents
RF optical transport module for integrated RF power detection Download PDFInfo
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- CN2826845Y CN2826845Y CNU2005200959293U CN200520095929U CN2826845Y CN 2826845 Y CN2826845 Y CN 2826845Y CN U2005200959293 U CNU2005200959293 U CN U2005200959293U CN 200520095929 U CN200520095929 U CN 200520095929U CN 2826845 Y CN2826845 Y CN 2826845Y
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Abstract
The utility model relates to a radio frequency light transmission module for integrated radio frequency power detection. A radio frequency power detection module is integrated in an original radio frequency light transmission module, and comprises a radio frequency transmission component, a signal coupling component, a radio frequency power detection component and an intelligent control component, wherein the intelligent control component adopts a single chip computer and an A/D conversion circuit. The single chip computer of the intelligent control component is connected with the radio frequency transmission component, the signal coupling component and the radio frequency power detection component in sequence. The utility model can exactly and effectively detect radio frequency input and output power, and provides linear output voltage, which takes a decibel as a unit and is exactly gauged, for users. The linear output voltage is very important for maintaining the frequency spectrum signal purity and the output power efficiency of base stations and direct-discharging stations. Otherwise, the utility model can improve the integration degree of the radio frequency light transmission module, reduces the number of the modules of optical fiber direct-discharging stations, and lowers the cost of optical fiber direct-discharging stations as a result.
Description
Technical field
The utility model belongs to the radio frequency communication devices field, is specifically related to the radio-frequency light transmission module that a kind of integrated RF power detects.
Background technology
Existing intelligent RF light delivery module structural principle as shown in Figure 1, its basic functional principle is: in radio frequency/light signal transition components, radiofrequency signal receives, amplify through overmatching, filtering, send into laser and convert light signal to and send, simultaneously the data flow of monitoring is also sent into laser through FSK modulation and filtering and convert light signal to and send; In optical fiber/radiofrequency signal transition components, the light signal of being come by optical fiber is through the wavelength division multiplexing of WDM, become through opto-electronic conversion and to send by radio-frequency antenna after the signal of telecommunication amplifies by coupling, send into filter circuit simultaneously and leach low frequency signal and send into the FSK demodulation and must arrive the monitor message that the opposite end is brought; The Based Intelligent Control assembly is mainly realized the control of radio-frequency power and setting and monitoring to the intelligent RF light delivery module, wherein: radio-frequency power control comprises regulation and control of attenuation automated power and radio-frequency power auto-control, respectively the variation of variation by monitoring optical power or radio-frequency power also the decay of corresponding adjusting numerical-control attenuator realize.The basic functional principle of attenuation automated power regulation and control is to receive luminous power and compare with the good receipts luminous power of default by gathering, and determines the pad value of numerical-control attenuator according to the difference that obtains.Reaching compensation, thereby make the variation of light path not influence the output of radio frequency to optical path change; The radio-frequency power auto-control is sent into module control unit and is compared with the performance number that the user configures, and determine and control the pad value of numerical-control attenuator according to the difference that obtains by output radiofrequency signal power is gathered after the A/D conversion.Thereby reach the stable of output radio-frequency power.
Setting and monitoring to the intelligent RF light delivery module, mainly realize by ordering accordingly with network management communication and execution by module control unit, comprise the configuration information that receives and resolve the webmaster download, carry out corresponding protocol processing, and carry out corresponding action according to the requirement of webmaster; Alarm, performance and the state information of collection module inside carry out reporting webmaster by network management interface after the corresponding software processes simultaneously, thereby realize Long-distance Control.
Though many functions that existing intelligent RF light delivery module is integrated have also realized intelligence, integrated RF power does not detect, and therefore also need add a power detection module when engineering is used.Along with the continuous development of radio-frequency light transmission module, its intelligent and integrated requirement is also more and more stronger.Existing intelligent RF light delivery module can detect radio-frequency power to be integrated in the inside modules and go, and to improve its integrated level, reduces the cost of repeater, makes it have more competitiveness.
Summary of the invention
The purpose of this utility model is in order to reduce the cost of optical fiber repeater, simplify the internal structure of optical fiber repeater, reduce the module number of optical fiber repeater, improve the integrated level of radio-frequency light transmission module, the radio-frequency light transmission module that provides a kind of integrated RF power to detect, radio-frequency power is detected in the middle of the radio-frequency light transmission module, improved the radio-frequency light transmission module integrated level, to solve the function that above-mentioned existing intelligent RF light delivery module fails to realize, the integrated level of existing intelligent RF light delivery module is improved greatly, reach the effect that a module substitutes a plurality of modules.
Its technical scheme is as follows:
The radio-frequency light transmission module that a kind of integrated RF power detects, integrated RF power detects detection module in original radio-frequency light transmission module, and this module comprises radio frequency transmission assembly, signal coupling assembly, radio-frequency power detection components, Based Intelligent Control assembly; Signal coupling assembly coupling unit radiofrequency signal from the radio frequency transmission assembly is come out, again the signal that is coupled out is sent to the radio-frequency power detection components, the voltage signal that detects after relatively amplifying, is sent to state information the Based Intelligent Control assembly that adopts single-chip microcomputer and A/D change-over circuit.
Radio frequency transmission assembly: comprise radio frequency input coupling 1, output coupling 7, filtering 2, coupling 3; Radiofrequency signal receives, and carries out filtering 2 after radio frequency input coupling 1, useful signal is leached send into laser 6 and convert light signal to and send.
Signal coupling assembly: comprise coupling 3, coupler 4; Useful signal through sending out after overmatching, the filtering is sent into coupler 4 after overmatching 3, the signal that is coupled out is sent into laser again and carried out the electric light conversion.
Radio-frequency power detection components: comprise that radio-frequency power detects integrated IC5, relatively amplifies 6; After the signal that is coupled out delivers to that radio-frequency power detects that integrated IC5 imports, power output detects, the voltage signal that detects is sent into A/D conversion chip 8 carry out after A/D changes resulting state information being sent into the Based Intelligent Control assembly after relatively amplifying 6.
The utility model radio-frequency power detects characteristics: adopt radio-frequency power to detect integrated IC such as AD8362; Can carry out the real effective power measurement; Having with dB is the linear response of unit, and has good temperature stability; Input dynamic range is big, and maximum can reach 60dB; Has the smooth I/O response from the low frequency to 2.7GHz; Precision, linearity height, typical linear slope are 50mV/dB; Single supply work, scope is+4.5V～+ 5.5V.
Description of drawings
Fig. 1 is the structure principle chart of existing intelligent RF light delivery module.
Fig. 2 is the utility model block flow diagram.
The cut-away view of Fig. 3 integrated IC AD8362 for radio-frequency power detects.
Fig. 4 has been integrated intelligent RF light delivery module circuit theory diagrams that radio-frequency power detects.
Among the figure: 1-radio frequency input coupling, 2-filtering, the 3-coupling, 4-coupler coupled signal, the 5-radio-frequency power detects, and 6-relatively amplifies, 7-radio frequency output coupling, 8-A/D conversion, 9-module control unit, 10-network management interface.
Embodiment
The utility model will be further described in conjunction with the accompanying drawings.
Basic functional principle of the present utility model is: radiofrequency signal receives, through radio frequency input coupling 1, output coupling 7, filtering 2, useful signal sent after overmatching 3, send into coupler 4 again, again the signal that is coupled out is sent to after radio-frequency power detects integrated IC5, the voltage signal that detects is sent to state information the Based Intelligent Control assembly after relatively amplifying 6.Its schematic diagram such as Fig. 2.
Radio-frequency power detects the power detector that integrated IC AD8362 brief introduction: AD8362 is the response of a kind of real effective, and its measurement result and signal waveform have nothing to do, thereby provides a kind of effective method for the rf power measurement of complex modulated signal.The internal circuit block diagram of AD8362 as shown in Figure 2.The RF signal of input at first is admitted to a variable ladder shaped resistance attenuator and decays, this attenuator has a tap every 5dB, have 12 taps, it adopts a kind of level and smooth interpolation patented technology, pad value can accurately be changed continuously, and the setting of pad value is by the voltage control of " VSET " pin.Signal after the decay is delivered to a high performance wide-band amplifier and is amplified, and again by the square-law detector detection in a broadband, the fluctuating signal of detection output compares with the output of another squaring circuit after filtering.The input of this squaring circuit is provided by " VTGT " pin, and it is a fixing direct voltage, links to each other with the VREF pin that accurate 1.25V reference voltage can be provided outside sheet usually.After the output signal difference of two squaring circuits is input to the high-gain error amplifier, will be from voltage signal of " VOUT " pin output, this magnitude of voltage can become with the power of input rf signal, the highlyest can reach (Vs-0.1) V.
AD8362 can be arranged to power measurement and two kinds of working methods of controller.During with the power metering system, " VOUT " directly links to each other with " VSET " pin, and this moment, output voltage was directly proportional with the logarithm of input power effective value, thereby reading can directly be represented with dB.When the controller mode, will can be used to change the main system Amplifier Gain from the input of " VSET " pin to the actual sampling voltage value of RF signal power, remain on the level of a setting making it.
" PWDN " pin of AD8362 can enter resting state when the logic high voltage signal controlling, at this moment, current sinking will reduce to below the 2 μ A.Chip " is waken up " and can finish in 1 μ s by low level.The running current of AD8362 is 18mA under+25 ℃ of conditions.Fig. 3 detects the cut-away view of integrated ICAD8362 for radio-frequency power.
Claims (5)
1, a kind of radio-frequency light transmission module of integrated RF power detection, integrated RF power detects detection module in original radio-frequency light transmission module, and it is characterized in that: this module comprises radio frequency transmission assembly, signal coupling assembly, radio-frequency power detection components, Based Intelligent Control assembly; Signal coupling assembly coupling unit radiofrequency signal from the radio frequency transmission assembly is come out, again the signal that is coupled out is sent to the radio-frequency power detection components, the voltage signal that detects after relatively amplifying, is sent to state information the Based Intelligent Control assembly that adopts single-chip microcomputer and A/D change-over circuit.
2, the radio-frequency light transmission module of integrated RF power detection according to claim 1 is characterized in that: the radio frequency transmission assembly: comprise radio frequency input coupling (1), output coupling (7), filtering (2), mate (3); Radiofrequency signal receives, and carries out filtering (2) after radio frequency input coupling (1), useful signal is leached send into laser (6) and convert light signal to and send.
3, the radio-frequency light transmission module of integrated RF power detection according to claim 1 is characterized in that: the signal coupling assembly: comprise coupling (3), coupler (4); Useful signal through sending out after overmatching, the filtering is sent into coupler (4) after overmatching (3), the signal that is coupled out is sent into laser again and carried out the electric light conversion.
4, the radio-frequency light transmission module of integrated RF power detection according to claim 1 is characterized in that: the radio-frequency power detection components: comprise that radio-frequency power detects integrated IC (5), relatively amplification (6); After the signal that comes out of coupling (4) delivers to that radio-frequency power detects that integrated IC (5) imports, power output detects, the voltage signal that detects is sent into A/D conversion chip (8) carry out after A/D changes resulting state information being sent into the Based Intelligent Control assembly after relatively amplifying (6).
5, the radio-frequency light transmission module of integrated RF power detection according to claim 1 is characterized in that: network management interface (10) design at radio-frequency light transmission module has proposed standard RS232 transceiving chip IC1 and RS485 transceiving chip U14.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200959293U CN2826845Y (en) | 2005-04-14 | 2005-04-14 | RF optical transport module for integrated RF power detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200959293U CN2826845Y (en) | 2005-04-14 | 2005-04-14 | RF optical transport module for integrated RF power detection |
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| Publication Number | Publication Date |
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| CN2826845Y true CN2826845Y (en) | 2006-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2005200959293U Expired - Lifetime CN2826845Y (en) | 2005-04-14 | 2005-04-14 | RF optical transport module for integrated RF power detection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101594708B (en) * | 2009-07-01 | 2010-10-27 | 耿直 | Working method for comparative optical repeater station and comparative optical repeater station |
-
2005
- 2005-04-14 CN CNU2005200959293U patent/CN2826845Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101594708B (en) * | 2009-07-01 | 2010-10-27 | 耿直 | Working method for comparative optical repeater station and comparative optical repeater station |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150414 Granted publication date: 20061011 |