CN218416363U - Broadcast television antenna signal receiving circuit - Google Patents
Broadcast television antenna signal receiving circuit Download PDFInfo
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- CN218416363U CN218416363U CN202222670311.1U CN202222670311U CN218416363U CN 218416363 U CN218416363 U CN 218416363U CN 202222670311 U CN202222670311 U CN 202222670311U CN 218416363 U CN218416363 U CN 218416363U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The utility model discloses a broadcast television antenna signal receiving circuit relates to the signal reception field, and this broadcast television antenna signal receiving circuit includes: the power supply module is used for supplying power to the signal amplification module; the signal receiving module is used for receiving broadcast and television program signals, acquiring received signals and outputting the received signals to the signal amplifying module; the signal amplification module is used for amplifying the received signal; the high-frequency elimination module is used for carrying out clutter filtering on the amplified received signal; the low-pass filtering module is used for filtering the signal noise after passing through the high-frequency eliminating module; compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses after input broadcast, television program signal, amplify it earlier, carry out high frequency signal and low frequency signal to it and carry out the filtering, reduce the noise that "zizizizi" behind broadcast, the television program signal output, and because amplify it earlier for output signal intensity after the circuit loss is high.
Description
Technical Field
The utility model relates to a signal reception field specifically is a broadcast television antenna signal receiving circuit.
Background
The antenna, which is an indispensable part of wireless communication, has a basic function of radiating and receiving radio waves. The broadcast television antenna transmits the broadcast television program signal for a long distance (tens of kilometers to thousands of kilometers) through a channel by a certain means, and sends the broadcast television program signal to a broadcast and television center or a rebroadcast transmitting station in a receiving area.
The existing signal receiving is often performed with clutter filtering at the signal receiving position, because the signal is not amplified by a subsequent circuit at the moment, the signal is weaker, the signal is reduced by a related clutter filtering circuit, and the finally obtained signal intensity is insufficient and needs to be improved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a broadcast television antenna signal receiving circuit to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme:
a broadcast television antenna signal receiving circuit comprising:
the power supply module is used for supplying power to the signal amplification module;
the signal receiving module is used for receiving broadcast and television program signals, acquiring received signals and outputting the received signals to the signal amplifying module;
the signal amplification module is used for amplifying the received signal;
the high-frequency elimination module is used for filtering clutter of the amplified received signal;
the low-pass filtering module is used for filtering the signal noise after passing through the high-frequency eliminating module;
the power supply module is connected with the signal amplification module, the signal receiving module is connected with the signal amplification module, the signal amplification module is connected with the high-frequency elimination module, and the high-frequency elimination module is connected with the low-pass filtering module.
As a further aspect of the present invention: the signal receiving module comprises an antenna T, a capacitor C1, a capacitor C2 and an inductor L1, one end of the antenna T is connected with one end of the capacitor C1, the other end of the capacitor C1 is connected with one end of the capacitor C2 and one end of the inductor L1, the other end of the capacitor C2 is grounded, and the other end of the inductor L1 is grounded.
As the utility model discloses further scheme again: the signal amplification module includes inductance L2, electric capacity C3, triode V1, triode V2, resistance R1, resistance R2, electric capacity C3's one end ground connection, inductance L2's one end is connected to electric capacity C3's the other end, triode V1's base is connected to inductance L2's the other end, triode V2's base is connected to triode V1's projecting pole, triode V1's collecting electrode connecting resistance R1's one end, resistance R1's other end connecting resistance R2's one end, the power module, triode V2's collecting electrode is connected to resistance R2's the other end, triode V2's projecting pole connection high frequency elimination module.
As the utility model discloses further scheme again: the high-frequency elimination module comprises an inductor L3, a capacitor C6 and a resistor R3, one end of the inductor L3 is connected with the signal amplification module, the other end of the inductor L3 is connected with one end of the capacitor C6, one end of the resistor R3 and the low-pass filtering module, the other end of the capacitor C6 is grounded, and the other end of the resistor R3 is grounded.
As a further aspect of the present invention: the low-pass filtering module comprises a resistor R4, a resistor R5, a capacitor C7, a capacitor C8, an amplifier U2, a resistor R6 and a resistor R7, wherein the high-frequency eliminating module is connected to one end of the resistor R4, one end of the capacitor C7 is connected to the other end of the resistor R4, one end of the resistor R5 is connected to the other end of the resistor R5, one end of the capacitor C8 is connected to the other end of the amplifier U2, the other end of the capacitor C7 is connected to the other end of the capacitor C8, the output end of the amplifier U2 and one end of the resistor R7, one end of the resistor R7 is connected to the other end of the resistor R6, the inverting end of the amplifier U2, and the other end of the resistor R6 is grounded.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses after input broadcast, television program signal, amplify it earlier, carry out high frequency signal and low frequency signal to it and carry out the filtering, reduce the noise that "zizizizi" behind broadcast, the television program signal output, and because amplify it earlier for output signal intensity after the circuit loss is high.
Drawings
Fig. 1 is a schematic diagram of a broadcast television antenna signal receiving circuit.
Fig. 2 is a circuit diagram of a signal receiving circuit of a broadcast television antenna.
Fig. 3 is a pin diagram of LM 358.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.
Referring to fig. 1, a broadcast television antenna signal receiving circuit includes:
the power supply module is used for supplying power to the signal amplification module;
the signal receiving module is used for receiving broadcast and television program signals, acquiring received signals and outputting the received signals to the signal amplifying module;
the signal amplification module is used for amplifying the received signal;
the high-frequency elimination module is used for carrying out clutter filtering on the amplified received signal;
the low-pass filtering module is used for filtering the signal noise after passing through the high-frequency eliminating module;
the power supply module is connected with the signal amplification module, the signal receiving module is connected with the signal amplification module, the signal amplification module is connected with the high-frequency elimination module, and the high-frequency elimination module is connected with the low-pass filtering module.
In a specific embodiment: referring to fig. 2, the supply voltage VCC is output to the input terminal of the regulator U1, and the regulator U1 outputs a stable voltage to the signal amplification module for its operation.
In this embodiment: referring to fig. 2, the signal receiving module includes an antenna T, a capacitor C1, a capacitor C2, and an inductor L1, wherein one end of the antenna T is connected to one end of the capacitor C1, the other end of the capacitor C1 is connected to one end of the capacitor C2 and one end of the inductor L1, the other end of the capacitor C2 is grounded, and the other end of the inductor L1 is grounded.
The antenna T receives frequency signals, the frequency of the frequency signals depends on the capacitor C2 and the inductor L1, and a frequency selection network formed by the capacitor C2 and the inductor L1 corresponds to the frequency of broadcast and television program signals (clutter input exists).
In this embodiment: referring to fig. 2, the signal amplifying module includes an inductor L2, a capacitor C3, a transistor V1, a transistor V2, a resistor R1, a resistor R2, one end of the capacitor C3 is grounded, the other end of the capacitor C3 is connected to one end of the inductor L2, the other end of the inductor L2 is connected to the base of the transistor V1, the emitter of the transistor V1 is connected to the base of the transistor V2, the collector of the transistor V1 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to one end of the resistor R2, the power supply module, the other end of the resistor R2 is connected to the collector of the transistor V2, and the emitter of the transistor V2 is connected to the high frequency elimination module.
The inductor L2 induces the frequency signal at the inductor L1, the frequency signal is output to the triode V1 for amplification, the frequency signal is amplified through the triode V2 to ensure the signal intensity, and the amplified signal is output to the high-frequency elimination module.
In this embodiment: referring to fig. 2, the high frequency elimination module includes an inductor L3, a capacitor C6, and a resistor R3, one end of the inductor L3 is connected to the signal amplification module, the other end of the inductor L3 is connected to one end of the capacitor C6, one end of the resistor R3, and the low pass filter module, the other end of the capacitor C6 is grounded, and the other end of the resistor R3 is grounded.
Inductor L3, capacitor C6, resistance R3 constitute high frequency choke, filters high frequency signal.
In this embodiment: referring to fig. 2 and 3, the low-pass filtering module includes a resistor R4, a resistor R5, a capacitor C7, a capacitor C8, an amplifier U2, a resistor R6, and a resistor R7, one end of the resistor R4 is connected to the high-frequency cancellation module, the other end of the resistor R4 is connected to one end of the capacitor C7 and one end of the resistor R5, the other end of the resistor R5 is connected to one end of the capacitor C8 and the non-inverting end of the amplifier U2, the other end of the capacitor C7 is connected to the other end of the capacitor C8, the output end of the amplifier U2 and one end of the resistor R7, the other end of the resistor R7 is connected to one end of the resistor R6 and the inverting end of the amplifier U2, and the other end of the resistor R6 is grounded.
The peripheral circuit behind the amplifier U2 forms a low-pass filter circuit, high-frequency filtering is carried out again, signals with the frequency close to that of the broadcast and television program signals are filtered, the filtering frequency depends on the resistance values or the capacitance values of the resistor R4, the resistor R5, the resistor R6, the resistor R7, the capacitor C7 and the capacitor C8, noise is filtered, and the received broadcast and television program signals are enabled to be good in tone after being output through devices such as a loudspeaker and a microphone. The amplifier U2 is LM358, LM358 is one pair of operational amplifiers, is suitable for the single power supply that the voltage range of the power is very wide to use, is suitable for the duplicate supply mode of operation too.
The utility model discloses a theory of operation is: the power supply module supplies power for the signal amplification module, the signal receiving module receives broadcast and television program signals, the received signals are obtained and output to the signal amplification module, the signal amplification module amplifies the received signals, the high-frequency elimination module carries out clutter filtering on the amplified received signals, and the low-pass filtering module carries out noise filtering on the signals passing through the high-frequency elimination module.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. A broadcast television antenna signal receiving circuit, characterized by:
the broadcast television antenna signal receiving circuit includes:
the power supply module is used for supplying power to the signal amplification module;
the signal receiving module is used for receiving broadcast and television program signals, acquiring received signals and outputting the received signals to the signal amplifying module;
the signal amplification module is used for amplifying the received signal;
the high-frequency elimination module is used for carrying out clutter filtering on the amplified received signal;
the low-pass filtering module is used for filtering the signal noise after passing through the high-frequency eliminating module;
the power supply module is connected with the signal amplification module, the signal receiving module is connected with the signal amplification module, the signal amplification module is connected with the high-frequency elimination module, and the high-frequency elimination module is connected with the low-pass filtering module.
2. The receiving circuit of claim 1, wherein the signal receiving module comprises an antenna T, a capacitor C1, a capacitor C2, and an inductor L1, one end of the antenna T is connected to one end of the capacitor C1, the other end of the capacitor C1 is connected to one end of the capacitor C2 and one end of the inductor L1, the other end of the capacitor C2 is grounded, and the other end of the inductor L1 is grounded.
3. The broadcast television antenna signal receiving circuit according to claim 2, wherein the signal amplifying module comprises an inductor L2, a capacitor C3, a transistor V1, a transistor V2, a resistor R1, and a resistor R2, one end of the capacitor C3 is grounded, the other end of the capacitor C3 is connected to one end of the inductor L2, the other end of the inductor L2 is connected to a base of the transistor V1, an emitter of the transistor V1 is connected to a base of the transistor V2, a collector of the transistor V1 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to one end of the resistor R2, and the power supply module, the other end of the resistor R2 is connected to a collector of the transistor V2, and an emitter of the transistor V2 is connected to the high frequency elimination module.
4. The receiving circuit of claim 1, wherein the high frequency elimination module comprises an inductor L3, a capacitor C6, and a resistor R3, one end of the inductor L3 is connected to the signal amplification module, the other end of the inductor L3 is connected to one end of the capacitor C6, one end of the resistor R3, and the low pass filter module, the other end of the capacitor C6 is grounded, and the other end of the resistor R3 is grounded.
5. The broadcast television antenna signal receiving circuit according to claim 1, wherein the low-pass filtering module includes a resistor R4, a resistor R5, a capacitor C7, a capacitor C8, an amplifier U2, a resistor R6, and a resistor R7, one end of the resistor R4 is connected to the high-frequency cancellation module, the other end of the resistor R4 is connected to one end of the capacitor C7 and one end of the resistor R5, the other end of the resistor R5 is connected to one end of the capacitor C8 and the non-inverting end of the amplifier U2, the other end of the capacitor C7 is connected to the other end of the capacitor C8, the output end of the amplifier U2 and one end of the resistor R7, the other end of the resistor R7 is connected to one end of the resistor R6 and the inverting end of the amplifier U2, and the other end of the resistor R6 is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222670311.1U CN218416363U (en) | 2022-10-11 | 2022-10-11 | Broadcast television antenna signal receiving circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222670311.1U CN218416363U (en) | 2022-10-11 | 2022-10-11 | Broadcast television antenna signal receiving circuit |
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| Publication Number | Publication Date |
|---|---|
| CN218416363U true CN218416363U (en) | 2023-01-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222670311.1U Active CN218416363U (en) | 2022-10-11 | 2022-10-11 | Broadcast television antenna signal receiving circuit |
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| CN (1) | CN218416363U (en) |
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- 2022-10-11 CN CN202222670311.1U patent/CN218416363U/en active Active
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