CN201352828Y - Satellite digital TV reception tuner - Google Patents
Satellite digital TV reception tuner Download PDFInfo
- Publication number
- CN201352828Y CN201352828Y CNU2009200318324U CN200920031832U CN201352828Y CN 201352828 Y CN201352828 Y CN 201352828Y CN U2009200318324 U CNU2009200318324 U CN U2009200318324U CN 200920031832 U CN200920031832 U CN 200920031832U CN 201352828 Y CN201352828 Y CN 201352828Y
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Abstract
Disclosed is a satellite digital TV reception tuner. The input end of a signal input circuit of the tuner is connected with satellite digital TV signals and the output end is connected with the input end of a microstrip high-pass loop filter, the output end of which is connected with the input end of a low-noise high frequency amplifier circuit; the output end of the low-noise high frequency amplifier circuit is connected with the input end of a single-chip silicon tuner; an AGC control circuit and an oscillator circuit are connected with the corresponding ports of the single-chip silicon tuner; and the output end of the single-chip silicon tuner is connected with the input end of a signal output circuit, the output end of which outputs I/Q digital TV signals. Compared with prior art, the satellite digital TV reception tuner has the advantages that the automatic gain control (AGC) range is wide; the circuitry is simple; and the tuner is free from debugging and is miniaturized and low in cost. The tuner satisfies the requirement of the Chinese ABS-S advanced satellite broadcasting and TV system and is particularly suitable for the ABS-S broadcasting and TV Village-to-Village Project in vast rural areas of China.
Description
Technical field
The utility model relates to a kind of satellite digital TV receiver turning.
Background technology
ABS-S China Vanguard satellite radio data system standard is that Chinese first has the satellite-signal transmission standard of complete independent intellectual property right, suitable with the DVB-S2 that represents satellite communication field recent technological advances level on performance, the partial properties index is more excellent, and complexity is far below DVB-S.Satellite digital TV receiving apparatus tuner matching used in the prior art with it, though technical performance satisfies the requirement of the Chinese ABS-S system of new promulgation, its circuit relative complex, cost is higher.
Summary of the invention
The technical problem that the utility model solves: design a kind of satellite digital TV receiver turning, the miniaturization electronics tuner of be that a kind of AGC range of AGC is big, circuit is comparatively simple, exempting to debug.Satisfy the requirement of Chinese ABS-S Vanguard satellite radio data system, be particularly suitable for the ABS-S projects to extend radio and TV coverage to all rural villages construction in the vast rural area of supporting China.
Technical solution of the present utility model: a kind of satellite digital TV receiver turning, form by signal input circuit, microstrip line high-pass filtering loop, low noise high-frequency amplifier circuit, single-chip silicon tuner, signal output loop, AGC control loop and oscillation circuit; The input termination satellite digital TV signal of signal input circuit, the input in the output termination microstrip line high-pass filtering loop of signal input circuit, the input of the output termination low noise high-frequency amplifier circuit in microstrip line high-pass filtering loop, the input of the output order chip silicon tuner of low noise high-frequency amplifier circuit, the corresponding port of AGC control loop and oscillation circuit order chip silicon tuner, the input of the output termination signal output loop of single-chip silicon tuner, the output output I/Q digital television signal of signal output loop.
Described signal input circuit, microstrip line high-pass filtering loop, low noise high-frequency amplifier circuit, single-chip silicon tuner, signal output loop, AGC control loop and oscillation circuit all are arranged on the interior printed circuit board of housing (1), housing (1) is outside equipped with signal input port (2) and signal output port (3), the input of signal input circuit is connected with signal input port (2), and the output of signal output loop is connected with signal output port (3).
Described single-chip silicon tuner is IC RDA5812.
Compared with prior art the AGC range of AGC is big, circuit is comparatively simple for the utility model, exempt from debugging, miniaturization, cost are lower.Satisfy the requirement of Chinese ABS-S Vanguard satellite radio data system, be particularly suitable for the ABS-S projects to extend radio and TV coverage to all rural villages construction in the vast rural area of supporting China.Main supporting satellite television receiver (device), direct satellite direct broadcast system Integrated Receive Decoder, " the village village is logical " set-top box etc.
Description of drawings
Fig. 1 is a structural representation of the present utility model,
Fig. 2 is a circuit block diagram of the present utility model,
Fig. 3 is circuit theory diagrams of the present utility model.
Embodiment
1,2,3 a kind of case study on implementation of the present utility model is described in conjunction with the accompanying drawings.
A kind of satellite digital TV receiver turning, its housing is provided with printed circuit board in (1), housing (1) is outside equipped with signal input port (2) and signal output port (3), and printed circuit board is provided with signal input circuit, microstrip line high-pass filtering loop, low noise high-frequency amplifier circuit, single-chip silicon tuner, signal output loop, AGC control loop and oscillation circuit.The input termination signal input port (2) of signal input circuit, insert the satellite digital TV signal by signal input port (2), the input in the output termination microstrip line high-pass filtering loop of signal input circuit, the input of the output termination low noise high-frequency amplifier circuit in microstrip line high-pass filtering loop, the input of the output order chip silicon tuner of low noise high-frequency amplifier circuit, the corresponding port of AGC control loop and oscillation circuit order chip silicon tuner, the input of the output termination signal output loop of single-chip silicon tuner, the output termination signal output port (3) of signal output loop is by signal output port (3) output I/Q digital television signal.
Signal input port (2) is a radio frequency interface, and signal output port (3) is row's pin.Single-chip silicon tuner is Silicon (silicon) single-chip, and RDA company makes, and model is RDA5812.Printed circuit board adopts double sided board, metal pore-formed technology, and component density is moderate, the two-sided mixing assembling of paster plug-in unit, and second reflow pb-free solder technology meets China Electronics's Product Green environmental requirement.
Operation principle: digital television signal (the frequency range 950MHz～2150MHz) import after satellite television receiving antenna and low-converter are handled from signal input port (2), after by the signal input circuit signal being sent into microstrip line high-pass filtering loop and handled, enter single-chip silicon tuner RDA5812 through the amplification of low noise high-frequency amplifier circuit again and carry out filtering, AGC automatic gain control amplification, QPSK digital demodulation, from signal output port (3) output I/Q digital television signal, carry out baseband decoding for late-class circuit, the TV signal that the output general television set receives.
Claims (3)
1, a kind of satellite digital TV receiver turning is characterized in that: described tuner is made up of signal input circuit, microstrip line high-pass filtering loop, low noise high-frequency amplifier circuit, single-chip silicon tuner, signal output loop, AGC control loop and oscillation circuit; The input termination satellite digital TV signal of signal input circuit, the input in the output termination microstrip line high-pass filtering loop of signal input circuit, the input of the output termination low noise high-frequency amplifier circuit in microstrip line high-pass filtering loop, the input of the output order chip silicon tuner of low noise high-frequency amplifier circuit, the corresponding port of AGC control loop and oscillation circuit order chip silicon tuner, the input of the output termination signal output loop of single-chip silicon tuner, the output output I/Q digital television signal of signal output loop.
2, satellite digital TV receiver turning according to claim 1, it is characterized in that: described signal input circuit, microstrip line high-pass filtering loop, low noise high-frequency amplifier circuit, single-chip silicon tuner, signal output loop, AGC control loop and oscillation circuit all are arranged on the interior printed circuit board of housing (1), housing (1) is outside equipped with signal input port (2) and signal output port (3), the input of signal input circuit is connected with signal input port (2), and the output of signal output loop is connected with signal output port (3).
3, satellite digital TV receiver turning according to claim 1 and 2 is characterized in that: described single-chip silicon tuner is IC RDA5812.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200318324U CN201352828Y (en) | 2009-01-20 | 2009-01-20 | Satellite digital TV reception tuner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200318324U CN201352828Y (en) | 2009-01-20 | 2009-01-20 | Satellite digital TV reception tuner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201352828Y true CN201352828Y (en) | 2009-11-25 |
Family
ID=41376210
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200318324U Expired - Fee Related CN201352828Y (en) | 2009-01-20 | 2009-01-20 | Satellite digital TV reception tuner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201352828Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106257927A (en) * | 2015-06-24 | 2016-12-28 | 上海未来宽带技术股份有限公司 | Tuner |
-
2009
- 2009-01-20 CN CNU2009200318324U patent/CN201352828Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106257927A (en) * | 2015-06-24 | 2016-12-28 | 上海未来宽带技术股份有限公司 | Tuner |
| CN106257927B (en) * | 2015-06-24 | 2019-11-08 | 上海未来宽带技术股份有限公司 | Tuner |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20091125 Termination date: 20130120 |