CN1189036A - Frequency-modulated sub-channel high-speed data transmission receiver - Google Patents
Frequency-modulated sub-channel high-speed data transmission receiver Download PDFInfo
- Publication number
- CN1189036A CN1189036A CN97126118A CN97126118A CN1189036A CN 1189036 A CN1189036 A CN 1189036A CN 97126118 A CN97126118 A CN 97126118A CN 97126118 A CN97126118 A CN 97126118A CN 1189036 A CN1189036 A CN 1189036A
- Authority
- CN
- China
- Prior art keywords
- pin
- frequency
- circuit
- chip
- capacitor
- Prior art date
- 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.)
- Granted
Links
Images
Landscapes
- Circuits Of Receivers In General (AREA)
Abstract
A frequency-modulating subchannel receiver for high-speed data transmission is composed of tuner, broad-band IF amplifier discriminator, subchannel band-pass filter, frequency-shift keyed data demodulator, and data output interface, and features that when primary channel is used for FM stereo broadcast, the subchannel is used for data transmission at 19.2 kbps. It can be used as receiver for real-time data analysis of stock market or receiving financial information from bank.
Description
The present invention relates to the radio broadcasting field, particularly a kind of frequency-modulated sub-channel high-speed data transmission receiver.
Domestic and international in recent years broad development frequency modulation subchannel broadcasting industry makes full use of existing FM multiplex transmitting station, and the operating frequency multiplex technique is implemented in the above program of transmission two covers on the carrier frequency.This technology enlarges the transmission of Information amount for utilizing limited frequency resource, and aspects such as increase data communication mode all have great economic worth.Along with developing rapidly of subchannel broadcast technology, the way of subchannel increases to 4 the tunnel from 1 the tunnel, and standard develops into independent sideband from double frequency modulation---frequency modulation.Its working method from the language to data, traffic rate from low (1200 baud) to high (19200 baud), for new more vast market has been opened up in the broadcasting of frequency modulation subchannel.
The purpose of this invention is to provide a kind of high sensitivity (40 μ v), high traffic rate (19200 baud), high merit price ratio, low error rate (1 * 10
-6) frequency-modulated sub-channel high-speed data transmission receiver.
Technical solution of the present invention is: frequency-modulated sub-channel high-speed data transmission receiver comprises formations such as tuner, broadband intermediate level frequency discrimination device, subchannel band pass filter, frequency shift keying data demodulator, data output interface circuit.Described tuner RF1 is by 1C1,1C2,1C3, T1 forms frequency selection circuit and is connected on IC1 between antenna socket and the integrated package (TA7358) first pin, simultaneously the height of being made up of electric capacity 1C7 and T2 is put the tank circuit and is connected between IC1 tripod and the 9th pin, signal is put through the height of ic chip 1 inside, mixing, in put the back from the 6th foot meridian capacitor 1C11 and T3 output, microwave triode 1Q1 and be connected on the quartz crystal oscillator X1 of its base stage, 1C14, and be connected on the electric capacity 1C15 of its emitter, 1C16, inductance 1L1 and resistance 1R3, be connected on the inductance T4 and the electric capacity 1C17 of collector electrode, resistance 1R12,1R4 form quartz crystal vibration frequency multiplier circuit.Whole circuit of tuner are installed in one independently in the shielding box.
Broadband intermediate level frequency discrimination device is by two ceramic filter L1 that are connected on triode Q1 base stage and collector electrode respectively, L2 and resistance R 1 are to R5, capacitor C 14, C13 forms the broadband intermediate level circuit, 1 pin of ic chip 2 (CA3189) is received in its output from ceramic filter L2,2 pin are connected C15 with 3 pin, C16, R8,4 pin and 14 pin ground connection, 5 pin link to each other with 15 pin, 9 pin and 8 pin cross-over connection inductance L 3 and T2, C42, R12 forms frequency-discriminating circuit, 10 pin are through filter capacitor C19, C20 ground connection, 11 pin through R11 to positive source, R10 is connected across between 12 pin and 16 pin, 16 pin are through R9, C17 ground connection, the composite signal behind the frequency discrimination is exported through R14 from 6 pin, C38, L6 selects subcarrier signal.
Subcarrier frequency active band-pass filter DT-83 is solidificated on the thick film circuit, and to R206, the active bandwidth-limited circuit of two-stage that capacitor C 201 to C205 is formed constitutes by ic chip 201 (UPC4572) and IC202 (78L05) and resistance R 201.
To R23, capacitor C 25 is to C30 by ic chip 4 (XR2211) and peripheral cell resistance R 17 for the subchannel frequency shift keying demodulator, and light-emitting diode DG and DY form, and the power supply of IC4 provides after by IC5 (78L08) voltage stabilizing.
Data output interface circuit is by ic chip 6 (ICL232) and be connected on capacitor C 22 on its 1,2,3,4,5,6,16 pin, C23, C24, C31, C32 and constitute, and data-signal meets the signal of rs-232 standard behind the 10 pin input shapers from the output of 7 pin.
The invention has the advantages that: it can utilize the frequency resource of existing f-m broadcast station, is implemented on the frequency modulated carrier except broadcasting original stereophonic program, can also increase the high-speed datacasting communication service of one tunnel 19.2 kilobit.After computer is connected, can be used as stock market's real time data analysis receiver or banking business data receiver.Because Circuit Optimization such as the logical filter devices of tuner and the active band of subchannel, make receiver have high sensitivity (40 μ v), two-forty (19.2 kilobit), high merit price ratio, low error rate (1 * 10
-6) etc. advantage.
Below in conjunction with accompanying drawing the present invention is illustrated:
Fig. 1 is a circuit block diagram of the present invention;
Fig. 2 is the embodiments of the invention electrical schematic diagram;
Fig. 3 is RF1 tuner unit line figure of the present invention;
Fig. 4 is subchannel active band-pass filter element circuit figure.
As shown in the figure: the present invention includes high frequency head, broadband intermediate level frequency discrimination device, subchannel The active bandpass filiter device, move frequently key control data demodulates device, data output interface circuit etc. Five most of compositions. In order to improve reception sensitivity, improve communication speed, reduce mistake The code rate all adopts integrated degree higher in each circuit, the integrated electric that the noise coefficient is littler The road module is as basic circuit. Designed simultaneously the high frequency head of individual screen, and rectangle The subcarrier frequency active bandpass filiter device that coefficient is good.
Embodiments of the invention and operation principle are: tuner is by 1C1,1C2,1C3, the frequency selection circuit that T1 forms is connected between antenna socket and ic chip 1 (TA7358) first pin, simultaneously the height of being made up of electric capacity 1C7 and T2 is put the tank circuit and is connected between IC1 tripod and the 9th pin, signal through the height of ic chip 1 inside put, mixing, in put after from the 6th foot meridian capacitor 1C11 and T3 output, microwave triode 1Q1 and be connected on quartz crystal oscillator X1, the 1C14 of its base stage; Be connected on electric capacity 1C15,1C16, inductance 1L1 and the resistance 1R3 of emitter, the inductance T4 and electric capacity 1C17, resistance 1R12, the 1R4 that are connected on collector electrode form quartz crystal vibration frequency multiplier circuit.Whole circuit of tuner are installed in one independently in the shielding box.
Broadband intermediate level frequency discrimination device: by two ceramic filter L1 that are connected on triode Q1 base stage and collector electrode respectively, L2 and resistance R 1 are to R5, capacitor C 14, C13 etc. form the broadband intermediate level circuit, 1 pin of ic chip 2 (CA3189) is received in output from ceramic filter L2,2 pin are connected C15 with 3 pin, C16, R8,4 pin and 14 pin ground connection, 5 pin link to each other with 15 pin, 9 pin and 8 pin cross-over connection inductance L 3 and T2, C42, R12 forms frequency-discriminating circuit, 10 pin are through filter capacitor C19, C20 ground connection, 11 pin through R11 to positive source, R10 is connected across between 12 pin and 16 pin, 16 pin are through R9, C17 ground connection, the composite signal behind the frequency discrimination is exported through R14 from 6 pin, C38, L6 selects subcarrier signal.
Subcarrier frequency active band-pass filter DT-83 is cured on the thick film circuit, and by ic chip 2 (UPC4572), IC3 (78L05) and resistance R 201 are to R206, and the active bandwidth-limited circuit of two-stage that capacitor C 201 to C205 is formed constitutes.
To R23, capacitor C 25 is to C30 by ic chip 4 (XR2211) and peripheral cell resistance R 17 for the subchannel frequency shift keying demodulator, and light-emitting diode DG and DY form, and the power supply of IC4 provides after by IC5 (78L08) voltage stabilizing.
Data output interface circuit is by ic chip 6 (ICL232) and be connected on capacitor C 22 on its 1,2,3,4,5,6,16 pin, C23, C24, C31, C32 and constitute, and data-signal import from 10 pin, exports the signal that meets rs-232 standard from 7 pin after the shaping.
Claims (7)
1, a kind of frequency-modulated sub-channel high-speed data transmission receiver is characterized in that: comprise tuner, broadband intermediate level frequency discrimination device, subchannel band pass filter, frequency shift keying data demodulator, data output interface circuit.
2, receiver according to claim 1, it is characterized in that: described tuner RF1 is by electric capacity 1C1,1C2,1C3, T1 forms, the height of being made up of electric capacity 1C7 and T2 is put the tank circuit and is connected between IC1 tripod and the 9th pin, frequency selection circuit is connected between antenna socket and the ic chip 1 (TA7358), synchronous signal is put through the height of ic chip 1 inside, mixing, in put the back from the 6th foot meridian capacitor 1C11 and T3 output, microwave triode 1Q1 and be connected on the quartz crystal oscillator X1 of its base stage, 1C14, and be connected on the electric capacity 1C15 of its emitter, 1C16, inductance 1L1 and resistance 1R3, be connected on the inductance T4 and the electric capacity 1C17 of collector electrode, resistance 1R2,1R4 form quartz crystal vibration frequency multiplier circuit.Whole circuit of tuner are installed in one independently in the shielding box.
3, receiver according to claim 1, it is characterized in that: described broadband intermediate level frequency discrimination device is two ceramic filter L1 by base stage that is connected on triode Q1 respectively and collector electrode, L2 and resistance R 1 are to R5, capacitor C 14, C13 forms the broadband intermediate level circuit, 1 pin of ic chip 2 (CA3189) is received in its output from ceramic filter L2,2 pin are connected C15 with 3 pin, C16, R8,4 pin and 14 pin ground connection, 5 pin link to each other with 15 pin, 9 pin and 8 pin cross-over connection inductance L 3 and T2, C42, R12 forms frequency-discriminating circuit, 10 pin are through filter capacitor C19, C20 ground connection, 11 pin through R11 to positive source, R10 is connected across between 12 pin and 16 pin, 16 pin are through R9, C17 ground connection, the composite signal behind the frequency discrimination is exported through R14 from 6 pin, C38, L6 selects subcarrier signal.
4, receiver according to claim 1, it is characterized in that: described subcarrier frequency active band-pass filter DT-83 is solidificated on the thick film circuit, be by ic chip 2 UPC (4572), IC3 (78L05) and resistance R 201 are to R206, and the active bandwidth-limited circuit of two-stage that capacitor C 201 to C205 is formed constitutes.
5, receiver according to claim 1, it is characterized in that: described subchannel frequency shift keying demodulator is made up of ic chip 4 (XR2211) and peripheral cell resistance R 17 to R23, capacitor C 25 to C30, light-emitting diode DG and DY, and the power supply of IC4 provides after by IC5 (78L08) voltage stabilizing.
6, receiver according to claim 1, it is characterized in that: described data output interface circuit by ic chip 6 (ICL232) and be connected on its 1,2,3,4,5,6, capacitor C 22 on 16 pin, C23, C24, C31, C32 constitute, and data-signal is imported from 10 pin, meet the signal of rs-232 standard after the shaping from the output of 7 pin.
7, receiver according to claim 1 is characterized in that: in above-mentioned each circuit respectively application integration piece TA7358, CA3189, UPC4572, XR2211, ICL232 as the basic module of circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97126118A CN1057654C (en) | 1997-12-31 | 1997-12-31 | Frequency-modulated sub-channel high-speed data transmission receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97126118A CN1057654C (en) | 1997-12-31 | 1997-12-31 | Frequency-modulated sub-channel high-speed data transmission receiver |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1189036A true CN1189036A (en) | 1998-07-29 |
| CN1057654C CN1057654C (en) | 2000-10-18 |
Family
ID=5177547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97126118A Expired - Fee Related CN1057654C (en) | 1997-12-31 | 1997-12-31 | Frequency-modulated sub-channel high-speed data transmission receiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1057654C (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR970007887B1 (en) * | 1994-11-30 | 1997-05-17 | Samsung Electronics Co Ltd | Tuner device for multi broadcasting receiver |
| JP3287971B2 (en) * | 1995-01-31 | 2002-06-04 | 松下電器産業株式会社 | Data receiving device |
-
1997
- 1997-12-31 CN CN97126118A patent/CN1057654C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1057654C (en) | 2000-10-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103501211A (en) | Composite modulation system compatible with medium-wave analogue amplitude modulation (AM) broadcast | |
| CN112134638B (en) | Synchronous deployment system and method for Internet of things and emergency broadcast | |
| CN112911557A (en) | Water meter data acquisition method based on Bluetooth networking | |
| JP3280830B2 (en) | Wireless communication system and wireless communication base station | |
| CN102361470B (en) | 230MHz Mobitex master-slave redundancy wireless data terminal special for electric power | |
| CN1057654C (en) | Frequency-modulated sub-channel high-speed data transmission receiver | |
| CN203912045U (en) | Digital forwarding relay modem self-adaptive to a variety of modulation modes | |
| CN115865243A (en) | Spectrum situation sensing system for complex electromagnetic environment | |
| CN202353571U (en) | Special 230MHz Mobitex master-slave redundancy wireless data terminal for power | |
| CN1136186A (en) | Administrating system for low voltage carrier electric power | |
| CN105591992A (en) | Single carrier-based analog digital synchronous transmission system and method | |
| CN201590818U (en) | Microwave scattering integrated communication device | |
| CN2287354Y (en) | Power distribution carrier modem | |
| CN201191443Y (en) | Regional surveillance system using CATV network | |
| CN2200258Y (en) | Double system frequency modulation additional channel broadcasting receiver | |
| CN2610588Y (en) | Multi-tuning TV tuning demodulator | |
| CN104851272B (en) | Miniaturized high-speed number for state's net II type concentrators passes communication module | |
| CN1417757A (en) | Device and method for controlling phase-locked loop module via short-range communication protocol | |
| CN1241073A (en) | Data communication system with automatic frequency sweep in FM broadcast subchannel and continuous phase frequency-shift keying | |
| CN1020999C (en) | Digital carrier communicator for distribution network | |
| CN2785056Y (en) | Wireless meter-copying equipment | |
| CN110445655B (en) | Heterogeneous fusion framework for smart power grid | |
| CN215647384U (en) | Uplink and downlink resource joint distribution device applied to smart power grid | |
| CN1110953C (en) | Safety terminal with coaxial cable transmission of cable TV | |
| CN214504539U (en) | Novel vehicle-mounted toll collector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |