CN203279017U - Satellite television signal double-output LNB receiving circuit - Google Patents

Satellite television signal double-output LNB receiving circuit Download PDF

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Publication number
CN203279017U
CN203279017U CN 201320289176 CN201320289176U CN203279017U CN 203279017 U CN203279017 U CN 203279017U CN 201320289176 CN201320289176 CN 201320289176 CN 201320289176 U CN201320289176 U CN 201320289176U CN 203279017 U CN203279017 U CN 203279017U
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signal
unit
port1
port2
horizontal
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CN 201320289176
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Chinese (zh)
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张金国
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JIANGSU JINGUO ELECTRONICS Co Ltd
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JIANGSU JINGUO ELECTRONICS Co Ltd
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Abstract

The utility model relates to a satellite television signal double-output LNB receiving circuit. The satellite television signal double-output LNB receiving circuit comprises a high-frequency amplification control unit, a quartz crystal oscillation unit, a horizontal signal and a vertical signal. The horizontal signal and the vertical signal both have two paths, and each path comprises a high-frequency amplification unit, a second distribution unit, a signal amplification unit, a signal coupling unit, a BPF band-pass filtering unit, an integrated-signal processing unit, a power supply and control unit. The satellite television signal double-output LNB receiving circuit is advantageous in that: local oscillation, frequency mixing and intermediate-frequency amplification are all integrated into a signal processing and control chip, the circuit is free of a local-oscillation resonant cavity which is necessary for an original medium DR, and temperature has a tiny effect on a crystal oscillator in the general environment, so high stability can be maintained, quality of an output signal is guaranteed, manufacturing difficulty is further lowered, power consumption and consumable usage are reduced, and production process is simplified.

Description

Satellite TV signal dual output tuner receiving circuit
Technical field
The utility model relates to the high-frequency signal low-noise amplifying frequency demultiplier, particularly a kind of satellite TV signal dual output tuner receiving circuit.
Background technology
At present, conventional dual output KU wave band tuner adopts low frequency, 2 circuit boards of high frequency, and SMT processing is numerous and diverse.The circuit of every circuit board consists of also comparatively complicated, and the use element is many, and needs adjust 2 resonant cavitys and 2 debugging screws respectively, produces assembling and processes numerous and diverse.
The effect of dual output tuner is to receive satellite TV signal, and go forward side by side line frequency road selection, signal amplification, signal two distribution and frequency reducing, amplification are processed, and finally export two road stable intermediate-freuqncy signals.One of them important step is that the output signal frequency of tuner and reference-input signal are consistent, and this link is all completed by control chip and triode or N channel field-effect pipe, the DR medium molecular oscillating circuit that shakes usually.In use, need first by being rotatably provided in the set screw on tuner, contact in the adjustment oscillating circuit and the distance between DR medium oscillator, thereby change the output local frequency of oscillating circuit, until output signal frequency and input reference signal are consistent, fix in set screw place coating screw fastening glue at last, thereby output signal is locked.The local frequency that produces due to the tuner oscillating circuit is very high, generally all more than 9GHz, thereby makes in adjustment process, and the minor variations between contact and DR medium oscillator all will cause local frequency significantly to change.The difficulty of regulative mode adjustment local frequency of regulating frequency of oscillation by the rotation set screw is very large, and the user needs repeated multiple times careful adjusting just can complete, thereby has increased the cost of manufacture of tuner.Variation of ambient temperature also can make the generation of tuner each several part expand with heat and contract with cold, very easily change the distance between contact and DR medium oscillator, the local frequency that causes regulating is drifted about, and output signal can't be consistent with reference-input signal, finally affects quality of output signals.In addition, owing to adopting DR medium oscillator and pcb board Copper Foil to form the tuner oscillating circuit, need to leave suitable resonant cavity at dual output tuner body and could produce oscillator signal.Therefore, manufacture difficulty and consumptive material are larger, and production procedure is complicated.
The utility model content
The purpose of this utility model is exactly the defects that will overcome prior art, and providing a kind of can reduce consumptive material and manufacture difficulty in order to avoid transfer the oscillating circuit frequency, simplifies the dual output tuner that is used for receiving satellite TV signal of production procedure.
for reaching above-mentioned purpose, the satellite TV signal dual output tuner receiving circuit that the utility model provides comprises the High frequency amplification control unit, horizontal signal High frequency amplification unit, vertical signal High frequency amplification unit, horizontal signal two allocation units, vertical signal two allocation units, PORT1 vertical signal amplifying unit, PORT1 horizontal signal amplifying unit, PORT2 vertical signal amplifying unit, PORT2 horizontal signal amplifying unit, PORT1BPF bandpass filtering unit, PORT2BPF bandpass filtering unit, PORT1 power supply and control unit and PORT2 power supply and control unit, described circuit board also comprises PORT1 signal coupling unit, PORT2 signal coupling unit, the quartz crystal oscillating unit, PORT1 integrated signal processing unit, PORT2 integrated signal processing unit, wherein:
Described horizontal signal High frequency amplification unit, horizontal signal two allocation units, PORT2 horizontal signal amplifying unit, PORT2 signal coupling unit, PORT2BPF bandpass filtering unit, PORT2 integrated signal processing unit are connected successively with described PORT1 high-frequency adapter head;
Described vertical signal High frequency amplification unit, vertical signal two allocation units, PORT1 vertical signal amplifying unit, PORT1 signal coupling unit, PORT1BPF bandpass filtering unit, PORT1 integrated signal processing unit are connected successively with described PORT1 high-frequency adapter head;
Described High frequency amplification control unit is connected with the vertical signal amplifying unit with described horizontal signal amplifying unit respectively;
Described horizontal signal two allocation units are connected with described PORT1 signal coupling unit through described PORT1 horizontal signal amplifying unit, and described vertical signal two allocation units are connected with described PORT2 signal coupling unit through described PORT2 vertical signal amplifying unit;
Described PORT1 integrated signal processing unit is connected with described quartz crystal oscillating unit respectively with PORT2 integrated signal processing unit;
Described PORT2 power supply and control unit are connected respectively with described High frequency amplification control unit, PORT2 horizontal signal amplifying unit, PORT2 horizontal signal amplifying unit, PORT2 integrated signal processing unit and PORT2 high-frequency adapter head;
Described PORT1 power supply and control unit are connected respectively with described High frequency amplification control unit, PORT1 vertical signal amplifying unit, PORT1 horizontal signal amplifying unit, PORT1 integrated signal processing unit and PORT1 high-frequency adapter head;
The RF signal comprises horizontal RF signal and vertical RF signal, described horizontal RF signal through horizontal signal High frequency amplification unit, horizontal signal two allocation units output to described PORT1 horizontal signal amplifying unit and PORT2 horizontal signal amplifying unit, described vertical RF signal through described vertical signal High frequency amplification unit, vertical signal two allocation units output to described PORT1 vertical signal amplifying unit and PORT2 vertical signal amplifying unit;
Described PORT1 signal coupling unit receives the signal of described PORT1 horizontal signal amplifying unit output and the signal of PORT1 vertical signal amplifying unit output is connected to described PORT1BPF band-pass filter unit filtering clutter, after described PORT1 integrated signal processing unit processes, output medium-frequency IF signal is to described PORT1 high-frequency adapter head again;
Described PORT2 signal coupling unit receives the signal of described PORT2 horizontal signal amplifying unit output and the signal of PORT2 vertical signal amplifying unit output is connected to described PORT2BPF band-pass filter unit filtering clutter, after described PORT2 integrated signal processing unit processes, output medium-frequency IF signal is to PORT2 high-frequency adapter head again.
The model that the utility model satellite TV signal dual output tuner receiving circuit, wherein said PORT1 integrated signal processing unit and PORT2 integrated signal processing unit adopt respectively quartz crystal oscillator circuit, local oscillator PLL frequency-multiplication phase-locked loop circuit, filter circuit, mixting circuit and low noise intermediate frequency amplifier circuit integrated is that the integrated chip of TFF1015 or TFF1017 consists of.
The model that the utility model satellite TV signal dual output tuner receiving circuit, wherein said PORT1 power supply and control unit and PORT2 power supply and control unit adopt respectively power supply stabilization circuit, 13V/18V polarizing voltage commutation circuit and the high/low frequency commutation circuit of 0K/22K integrated is that the integrated chip of ZXNB4200 or ZXNB4202 or LS7005 consists of.
The advantage of the utility model satellite TV signal dual output tuner receiving circuit is: be integrated into all because the local oscillator of circuit board, mixing, intermediate frequency amplify that signal is processed and control chip is inner, circuit box has saved the necessary local oscillator resonant cavity of original medium DR, crystal oscillator temperature influence in general environment is minimum, thereby can keep high stability, thereby guaranteed the quality of output signal, further reduce manufacture difficulty, reduced power consumption and consumptive material and used, simplified production procedure.
Description of drawings
Fig. 1 is the block diagram of the utility model satellite TV signal dual output tuner receiving circuit;
Fig. 2 is the schematic diagram of the utility model satellite TV signal dual output tuner receiving circuit.
Embodiment
Describe the embodiment of the utility model satellite TV signal dual output tuner receiving circuit in detail below in conjunction with accompanying drawing.
with reference to Fig. 1, the satellite TV signal dual output tuner receiving circuit that the utility model provides comprises High frequency amplification control unit 11, horizontal signal High frequency amplification unit 13, vertical signal High frequency amplification unit 12, horizontal signal two allocation units 15, vertical signal two allocation units 14, PORT1 horizontal signal amplifying unit 17, PORT1 vertical signal amplifying unit 16, PORT2 horizontal signal amplifying unit 19, PORT2 vertical signal amplifying unit 18, PORT1 signal coupling unit 20, PORT2 signal coupling unit 21, PORT1BPF bandpass filtering unit 22, PORT2BPF bandpass filtering unit 23, PORT1 integrated signal processing unit 24, PORT2 integrated signal processing unit 25, PORT1 power supply and control unit 26, PORT2 power supply and control unit 27 and quartz crystal oscillating unit 28.
Wherein, horizontal signal High frequency amplification unit 13, horizontal signal two allocation units 15, PORT2 horizontal signal amplifying unit 19, PORT2 signal coupling unit 21, PORT2BPF bandpass filtering unit 23, PORT2 integrated signal processing unit 25 are connected successively with PORT1 high-frequency adapter head 2.
Vertical signal High frequency amplification unit 12, vertical signal two allocation units 14, PORT1 vertical signal amplifying unit 16, PORT1 signal coupling unit 20, PORT1BPF bandpass filtering unit 22, PORT1 integrated signal processing unit 24 are connected successively with PORT1 high-frequency adapter head 1.
High frequency amplification control unit 11 is connected with vertical signal amplifying unit 12 with horizontal signal amplifying unit 13 respectively.
Horizontal signal two allocation units 15 are connected with PORT1 signal coupling unit 20 through PORT1 horizontal signal amplifying unit 17, and vertical signal two allocation units 14 are connected with PORT2 signal coupling unit 21 through PORT2 vertical signal amplifying unit 18.
PORT1 integrated signal processing unit 24 is connected with quartz crystal oscillating unit 28 respectively with PORT2 integrated signal processing unit 25.
PORT2 power supply and control unit 27 are connected respectively with High frequency amplification control unit 11, PORT2 horizontal signal amplifying unit 18, PORT2 horizontal signal amplifying unit 19, PORT2 integrated signal processing unit 25 and PORT2 high-frequency adapter head 2.
PORT1 power supply and control unit 26 are connected respectively with High frequency amplification control unit 11, PORT1 vertical signal amplifying unit 16, PORT1 horizontal signal amplifying unit 17, PORT1 integrated signal processing unit 24 and PORT1 high-frequency adapter head 1.
The utility model satellite TV signal dual output tuner receiving circuit, wherein PORT1 integrated signal processing unit 24 and PORT2 integrated signal processing unit 25 model that adopts respectively quartz crystal oscillator circuit, local oscillator PLL frequency-multiplication phase-locked loop circuit, filter circuit, mixting circuit and low noise intermediate frequency amplifier circuit integrated is that the integrated chip of TFF1015 or TFF1017 consists of.The model that PORT1 power supply and control unit 26 and PORT2 power supply and control unit 27 adopt respectively power supply stabilization circuit, 13V/18V polarizing voltage commutation circuit and the high/low frequency commutation circuit of 0K/22K integrated is that the integrated chip of ZXNB4200 or ZXNB4202 or LS7005 consists of.
in conjunction with reference to Fig. 2, concrete circuit connects: horizontal signal High frequency amplification unit 13 is connected to High frequency amplification control unit 11 by resistance, vertical signal High frequency amplification unit 12 is connected to High frequency amplification control unit 11 by resistance, High frequency amplification control unit 11 is connected respectively to horizontal signal amplifying unit 13 by Copper Foil, vertical signal amplifying unit 12 and PORT1 power supply and control unit, PORT2 power supply and control unit, horizontal signal two allocation units 15 are connected to horizontal signal High frequency amplification unit 13 and PORT1 horizontal signal amplifying unit 17, between PORT2 horizontal signal amplifying unit 19, vertical signal two allocation units 14 are connected to vertical signal High frequency amplification unit 12 and PORT1 vertical signal amplifying unit 16, between PORT2 horizontal signal amplifying unit 18, PORT1 horizontal signal amplifying unit 17 is connected between horizontal signal two allocation units 15 and PORT1 signal coupling unit 20, and are connected connection with PORT1 integrated signal processing unit by Copper Foil, PORT1 vertical signal amplifying unit 16 is connected between vertical signal two allocation units 14 and PORT1 signal coupling unit 20, and are connected connection with PORT1 integrated signal processing unit by Copper Foil, PORT2 horizontal signal amplifying unit 19 is connected between horizontal signal two allocation units 15 and PORT2 signal coupling unit 21, and are connected connection with PORT2 integrated signal processing unit by Copper Foil, PORT2 vertical signal amplifying unit 18 is connected between vertical signal two allocation units 14 and PORT2 signal coupling unit 21, and are connected connection with PORT2 integrated signal processing unit by Copper Foil, PORT1 signal coupling unit 20 is connected to PORT1 horizontal signal amplifying unit 17, PORT1 vertical signal amplifying unit 16 and PORT1BPF bandpass filtering unit 22, PORT2 signal coupling unit 21 is connected to PORT2 horizontal signal amplifying unit 19, PORT2 vertical signal amplifying unit 18 and PORT2BPF bandpass filtering unit 23, PORT1BPF bandpass filtering unit 22 is connected between PORT1 signal coupling unit 20 and PORT1 integrated signal processing unit, PORT2BPF bandpass filtering unit 23 is connected between PORT2 signal coupling unit 23 and PORT2 integrated signal processing unit, PORT1 integrated signal processing unit 24 is connected between PORT1BPF bandpass filtering unit 22 and PORT1 high-frequency adapter head 1, simultaneously by Copper Foil respectively with PORT1 vertical signal amplifying unit 16, PORT1 horizontal signal amplifying unit 17, PORT1 power supply and control unit 26, quartz crystal oscillating unit 28 connects, PORT2 integrated signal processing unit 25 is connected between PORT2BPF bandpass filtering unit 23 and PORT2 high-frequency adapter head 2, simultaneously by Copper Foil respectively with PORT2 vertical signal amplifying unit 18, PORT2 horizontal signal amplifying unit 19, PORT2 power supply and control unit 27, quartz crystal oscillating unit 28 connects, the quartz crystal oscillating unit is connected between PORT1 integrated signal processing unit 24 and PORT2 integrated signal processing unit 25 by Copper Foil, PORT1 power supply and control unit 26 by Copper Foil respectively with High frequency amplification control unit 11, PORT1 integrated signal processing unit 24, PORT1 tuner adapter 1 connects.PORT2 power supply and control unit 27 by Copper Foil are connected with the High frequency amplification control unit respectively, PORT2 integrated signal processing unit 25, PORT2 tuner adapter 2 connect.
In the embodiment of the utility model satellite TV signal dual output tuner receiving circuit, the course of work of circuit is: the RF signal comprises horizontal RF signal and vertical RF signal.Horizontal RF signal through horizontal signal High frequency amplification unit 13, horizontal signal two allocation units 15 output to PORT1 horizontal signal amplifying unit 17 and PORT2 horizontal signal amplifying unit 19, vertical RF signal through vertical signal High frequency amplification unit 12, vertical signal two allocation units 14 output to PORT1 vertical signal amplifying unit 16 and PORT2 vertical signal amplifying unit 18.
PORT1 signal coupling unit 20 receives the signal of PORT1 horizontal signal amplifying unit 17 outputs and the signal of PORT1 vertical signal amplifying unit 16 outputs is connected to PORT1BPF band-pass filter unit 22 filtering clutters, after PORT1 integrated signal processing unit 24 was processed, output medium-frequency IF signal was to PORT1 high-frequency adapter head 1 again.
PORT2 signal coupling unit 21 receives the signal of PORT2 horizontal signal amplifying unit 19 outputs and the signal of PORT2 vertical signal amplifying unit 18 outputs is connected to PORT2BPF band-pass filter unit 23 filtering clutters, after PORT2 integrated signal processing unit 25 was processed, output medium-frequency IF signal was to PORT2 high-frequency adapter head 2 again.
Embodiment recited above is described preferred implementation of the present utility model, is not that design of the present utility model and scope are limited.Under the prerequisite that does not break away from the utility model design concept; various modification and improvement that this area ordinary person makes the technical solution of the utility model; all should drop into protection range of the present utility model; the technology contents that the utility model is asked for protection all is documented in claims.

Claims (3)

1. satellite TV signal dual output tuner receiving circuit, comprise High frequency amplification control unit (11), horizontal signal High frequency amplification unit (13), vertical signal High frequency amplification unit (12), horizontal signal two allocation units (15), vertical signal two allocation units (14), PORT1 vertical signal amplifying unit (16), PORT1 horizontal signal amplifying unit (17), PORT2 vertical signal amplifying unit (18), PORT2 horizontal signal amplifying unit (19), PORT1BPF bandpass filtering unit (22), PORT2BPF bandpass filtering unit (23), PORT1 power supply and control unit (26) and PORT2 power supply and control unit (27), it is characterized in that: also comprise PORT1 signal coupling unit (20), PORT2 signal coupling unit (21), quartz crystal oscillating unit (28), PORT1 integrated signal processing unit (24), PORT2 integrated signal processing unit (25), wherein:
Described horizontal signal High frequency amplification unit (13), horizontal signal two allocation units (15), PORT2 horizontal signal amplifying unit (19), PORT2 signal coupling unit (21), PORT2BPF bandpass filtering unit (23), PORT2 integrated signal processing unit (25) are connected successively with described PORT1 high-frequency adapter head (2);
Described vertical signal High frequency amplification unit (12), vertical signal two allocation units (14), PORT1 vertical signal amplifying unit (16), PORT1 signal coupling unit (20), PORT1BPF bandpass filtering unit (22), PORT1 integrated signal processing unit (24) are connected successively with described PORT1 high-frequency adapter head (1);
Described High frequency amplification control unit (11) is connected with vertical signal amplifying unit (12) with described horizontal signal amplifying unit (13) respectively;
Described horizontal signal two allocation units (15) are connected with described PORT1 signal coupling unit (20) through described PORT1 horizontal signal amplifying unit (17), and described vertical signal two allocation units (14) are connected with described PORT2 signal coupling unit (21) through described PORT2 vertical signal amplifying unit (18);
Described PORT1 integrated signal processing unit (24) is connected with described quartz crystal oscillating unit (28) respectively with PORT2 integrated signal processing unit (25);
Described PORT2 power supply and control unit (27) are connected respectively with described High frequency amplification control unit (11), PORT2 horizontal signal amplifying unit (18), PORT2 horizontal signal amplifying unit (19), PORT2 integrated signal processing unit (25) and PORT2 high-frequency adapter head (2);
Described PORT1 power supply and control unit (26) are connected respectively with described High frequency amplification control unit (11), PORT1 vertical signal amplifying unit (16), PORT1 horizontal signal amplifying unit (17), PORT1 integrated signal processing unit (24) and PORT1 high-frequency adapter head (1);
The RF signal comprises horizontal RF signal and vertical RF signal, described horizontal RF signal through horizontal signal High frequency amplification unit (13), horizontal signal two allocation units (15) output to described PORT1 horizontal signal amplifying unit (17) and PORT2 horizontal signal amplifying unit (19), described vertical RF signal through described vertical signal High frequency amplification unit (12), vertical signal two allocation units (14) output to described PORT1 vertical signal amplifying unit (16) and PORT2 vertical signal amplifying unit (18);
Described PORT1 signal coupling unit (20) receives the signal of described PORT1 horizontal signal amplifying unit (17) output and the signal of PORT1 vertical signal amplifying unit (16) output is connected to described PORT1BPF band-pass filter unit (22) filtering clutter, after described PORT1 integrated signal processing unit (24) was processed, output medium-frequency IF signal was to described PORT1 high-frequency adapter head (1) again;
Described PORT2 signal coupling unit (21) receives the signal of described PORT2 horizontal signal amplifying unit (19) output and the signal of PORT2 vertical signal amplifying unit (18) output is connected to described PORT2BPF band-pass filter unit (23) filtering clutter, after described PORT2 integrated signal processing unit (25) was processed, output medium-frequency IF signal was to PORT2 high-frequency adapter head (2) again.
2. satellite TV signal dual output tuner receiving circuit according to claim 1 is characterized in that: the model that wherein said PORT1 integrated signal processing unit (24) and PORT2 integrated signal processing unit (25) adopt respectively quartz crystal oscillator circuit, local oscillator PLL frequency-multiplication phase-locked loop circuit, filter circuit, mixting circuit and low noise intermediate frequency amplifier circuit integrated is that the integrated chip of TFF1015 or TFF1017 consists of.
3. satellite TV signal dual output tuner receiving circuit according to claim 1 and 2 is characterized in that: the model that wherein said PORT1 power supply and control unit (26) and PORT2 power supply and control unit (27) adopt respectively power supply stabilization circuit, 13V/18V polarizing voltage commutation circuit and the high/low frequency commutation circuit of 0K/22K integrated is that the integrated chip of ZXNB4200 or ZXNB4202 or LS7005 consists of.
CN 201320289176 2013-05-23 2013-05-23 Satellite television signal double-output LNB receiving circuit Expired - Fee Related CN203279017U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320289176 CN203279017U (en) 2013-05-23 2013-05-23 Satellite television signal double-output LNB receiving circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320289176 CN203279017U (en) 2013-05-23 2013-05-23 Satellite television signal double-output LNB receiving circuit

Publications (1)

Publication Number Publication Date
CN203279017U true CN203279017U (en) 2013-11-06

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Application Number Title Priority Date Filing Date
CN 201320289176 Expired - Fee Related CN203279017U (en) 2013-05-23 2013-05-23 Satellite television signal double-output LNB receiving circuit

Country Status (1)

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CN (1) CN203279017U (en)

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20131106

Termination date: 20150523

EXPY Termination of patent right or utility model