CN201036243Y - Automatic gain control voltage receiving apparatus - Google Patents
Automatic gain control voltage receiving apparatus Download PDFInfo
- Publication number
- CN201036243Y CN201036243Y CNU2006200741419U CN200620074141U CN201036243Y CN 201036243 Y CN201036243 Y CN 201036243Y CN U2006200741419 U CNU2006200741419 U CN U2006200741419U CN 200620074141 U CN200620074141 U CN 200620074141U CN 201036243 Y CN201036243 Y CN 201036243Y
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- China
- Prior art keywords
- integrated amplifier
- signal
- output
- satellite
- receiving card
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- Circuits Of Receivers In General (AREA)
- Control Of Amplification And Gain Control (AREA)
Abstract
The utility model discloses an automatic gain control voltage receiving device and comprises a satellite signal receiving card 10 and a satellite signal automatic gain control voltage receiving card 11; the satellite signal automatic gain control voltage receiving card 11 comprises an integrated amplifier 111, a gain/electric-level adapter 112 and a micro-processor 113, wherein, the micro-processor 113 comprises an A/D converting unit; the satellite antenna receiving card 10 receives L-wave-band signal-channel signal output by an antenna component frequency converter, AGC voltage associated with the strength of the signal is output to the homo-phase input terminal of the integrated amplifier, the output terminal of the integrated amplifier is fed back to the opposite-phase input terminal of the integrated amplifier through the gain/electric-level adapter, and is connected with the input terminal of the micro-processor at the same time; digital AGC signal converted by the A/D converting unit is output from the output terminal of the micro-processor.
Description
Technical field
The utility model relates to a kind of satellite communication antena receiving card, relates in particular to a kind of automatic gain-controlled voltage receiver.
Background technology
At present, what adopt usually in the satellite communication method for searching star is the method that receives satellite beacon signals, and the angle of pitch, azimuth and the polarizing angle of adjusting antenna are realized the optimum reception location of antenna.Beacon signal narrow bandwidth in practical operation is not easy to catch, and is disturbed easily, and is high to the response requirement of system.In addition, often be used for the star equipment of seeking of satellite communication according to method for searching star, can adopt the beacon signal receiver, this beacon signal receiver is relatively more expensive, and cost is the several times of channel signal receiver.
Summary of the invention
The purpose of this utility model is to solve the problems of the technologies described above, and a kind of automatic gain-controlled voltage receiver that utilizes channel signal to carry out automatic star-seeking is provided.
A kind of automatic gain-controlled voltage receiver, comprise satellite-signal receiving card and satellite-signal AGC (automatic gain control) voltage receiving card, satellite-signal AGC (automatic gain control) voltage receiving card comprises integrated amplifier, gain/level adapted device, microprocessor, wherein microprocessor contains the A/D converting unit, satellite antenna receiving card receives the L-band channel signal from the output of antenna module frequency converter, take out the in-phase input end that the AGC voltage relevant with its intensity outputs to integrated amplifier, the output of integrated amplifier feeds back to the inverting input of integrated amplifier by gain/level adapted device, connect the input of microprocessor simultaneously, from the digital AGC signal of I/O output output after the conversion of A/D converting unit of microprocessor.
Compared with prior art, the utlity model has following advantage:
Above-mentioned satellite-signal receiving card adopts general satellite data receiving card, and promptly the channel signal receiver receives the channel signal from the L-band of antenna module frequency converter output, take out the strong and weak relevant AGC voltage value of channel signal therewith, be sent to satellite-signal AGC voltage receiving card, judge that the sign of seeking star is not a beacon signal, but channel signal, the channel signal bandwidth is wide, catches easily, and speed is fast, system requirements is low, be not subject to disturb, seek star reliability height, can realize seeking apace star.
In addition, the cost of channel signal receiver is lower than beacon signal receiver cost, the low price several times.While the utility model keeps in automatic star-seeking manually seeks the star function, has the automatic star-seeking pattern and manually seeks two kinds of working methods of star pattern, can guarantee to seek the accuracy of star to channel more.
Description of drawings
Fig. 1 is the circuit block diagram of automatic gain-controlled voltage receiver.
Fig. 2 is the physical circuit figure of satellite-signal AGC voltage receiving card.
Embodiment
As shown in Figure 1, a kind of automatic gain-controlled voltage receiver, comprise satellite-signal receiving card 10 and satellite-signal AGC (automatic gain control) voltage receiving card 11, satellite-signal AGC (automatic gain control) voltage receiving card 11 comprises integrated amplifier 111, gain/level adapted device 112, microprocessor 113, wherein microprocessor 113 contains the A/D converting unit, the L-band channel signal that satellite antenna receiving card 10 receives from the output of antenna module frequency converter, take out the in-phase input end that the AGC voltage relevant with its intensity outputs to integrated amplifier, the output of integrated amplifier feeds back to the inverting input of integrated amplifier by gain/level adapted device, connect the input of microprocessor simultaneously, from the digital AGC signal of I/O output output after the conversion of A/D converting unit of microprocessor.
With reference to Fig. 2, above-mentioned satellite-signal AGC (automatic gain control) voltage receiving card 11, its gain level adapter 112 is by two fixed resistance R5, R4 and variable resistor R11 composition that is connected in series, the end of the activity termination R1 of variable resistor R11, the in-phase input end of another termination integrated amplifier LM324 of R1, the end of variable-resistance activity termination R2 of while, the inverting input of another termination integrated amplifier LM324 of R2, the output of integrated amplifier LM324 connects the integrated amplifier inverting input by resistance R 3, and the output of integrated amplifier also connects the A/D input of microprocessor STC12C2052AD simultaneously.
This device is finished the target that the satellite-signal AGC (automatic gain control) voltage receives under the support of peripheral master control borad.
As illustrated in fig. 1 and 2, the L-band channel signal that satellite antenna receiving card 10 receives from the output of antenna module frequency converter, take out and the strong and weak AGC voltage of its channel signal, receive the in-phase input end 1115 of integrated amplifier 111, the output of integrated amplifier feeds back to the inverting input of integrated amplifier by resistance R 3, the A/D input of the output termination microprocessor of while integrated amplifier, export through the digital AGC signal after the A/D cell translation from the I/O output of microprocessor through the microprocessor internal software processes, this signal is by port L111, L112, L113, L114, L115, the L116 data wire is delivered to the parallel port end of master control borad 12.
In addition, L-band satellite channel signal from the antenna part frequency converter is sent into satellite-signal receiving card 10 inputs, satellite antenna receiving card 10 is connected with control bus by the data/address bus of PCI standard sockets with the periphery, operating state to satellite antenna receiving card presets and is provided with, and it is operated under the predetermined satellite channel parameter condition.At this moment, satellite antenna receiving card receives and demodulation the channel signal of L-band, restores modulation signal.In the reduction process, produce the AGC voltage relevant with the L-band signal strength signal intensity, it is the power that the size of AGC voltage is represented the satellite channel signal, this signal is delivered to satellite-signal AGC receiving card 11, in the in-phase end input and the amplification of integrated amplifier 111, the end of oppisite phase input gain level adapted voltage of integrated amplifier is in order to adjust the starting voltage that AGC amplifies, voltage when signal is the strongest generally selects this magnitude of voltage between 3～4V by the decision of resistance R 3/R2 numerical value.Satellite-signal receiving card 10 adopts the Utility Satellite data receiver cards among the present invention, as Shenzhen through the sky 320 cards, go up wide card in Hainan or the like.
The collection of AGC voltage is carried out continuously, and the microprocessor that includes A/D converter is finished the digital translation of AGC voltage automatic cycle under timeticks, and this function also can be added general micro controller and finish by independent A/D converter.Digital AGC voltage signal after the conversion enters peripheral program participation calculating and driven antenna and makes corresponding action by the I/O port output of microprocessor.
As shown in Figure 2, in order to indicate the operating state of automatic gain-controlled voltage receiver, also increased the signal quality indication output of seeking star, indicate on the device panel with 4 LED, these four LED connect with port one 109,1110,1111,1112 respectively, what increase simultaneously also has the ready indication of peripheral system program (connectivity port 1113) and seeks the indication (connectivity port 1114) that star finishes, and all is by the LED display routine running status on the device panel.
Claims (2)
1. an automatic gain-controlled voltage receiver is characterized in that,
Comprise satellite-signal receiving card (10) and satellite-signal AGC (automatic gain control) voltage receiving card (11), satellite-signal AGC (automatic gain control) voltage receiving card (11) comprises integrated amplifier (111), gain/level adapted device (112), microprocessor (113), wherein microprocessor (113) contains the A/D converting unit, satellite antenna receiving card (10) receives the L-band channel signal from the output of antenna module frequency converter, take out the in-phase input end that the AGC voltage relevant with its intensity outputs to integrated amplifier, the output of integrated amplifier feeds back to the inverting input of integrated amplifier by gain/level adapted device, connect the input of microprocessor simultaneously, from the digital AGC signal of I/O output output after the conversion of A/D converting unit of microprocessor.
2. automatic gain-controlled voltage receiver according to claim 1 is characterized in that,
Above-mentioned satellite-signal AGC (automatic gain control) voltage receiving card (11), its gain level adapter (112) is by two fixed resistance (R5, R4) and a variable resistor (R11) composition that is connected in series, one end of the activity termination variable resistor (R1) of variable resistor (R11), the in-phase input end of another termination integrated amplifier (LM324) of variable resistor (R1), one end of variable-resistance movable end connecting resistance of while (R2), the inverting input of another termination integrated amplifier (LM324) of resistance (R2), the output of integrated amplifier (LM324) connects the integrated amplifier inverting input by resistance (R3), and the output of integrated amplifier also connects the A/D input of microprocessor (STC12C2052AD) simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200741419U CN201036243Y (en) | 2006-06-19 | 2006-06-19 | Automatic gain control voltage receiving apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006200741419U CN201036243Y (en) | 2006-06-19 | 2006-06-19 | Automatic gain control voltage receiving apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201036243Y true CN201036243Y (en) | 2008-03-12 |
Family
ID=39197132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006200741419U Expired - Lifetime CN201036243Y (en) | 2006-06-19 | 2006-06-19 | Automatic gain control voltage receiving apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201036243Y (en) |
-
2006
- 2006-06-19 CN CNU2006200741419U patent/CN201036243Y/en not_active Expired - Lifetime
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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 |
Effective date of abandoning: 20090930 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |