Parameter Extraction Circuit and Parameter Extraction Method of Broadcasting Wave Monitoring Receiver
A parameter extraction and receiver technology, applied in the field of communication, can solve the problems of monitoring and monitoring data that cannot be recorded in real time and monitoring accuracy is not high, and achieve the effects of automatic gain control, convenient installation and debugging, and reduced complexity
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[0029] Embodiment 1: as Figure 1-7 As shown, a parameter extraction circuit of a radio monitoring receiver includes a power supply circuit 1, a detection circuit 2, a low-frequency amplification circuit 3, and a signal output circuit 4,
[0030]The power supply circuit 1 is connected to the corresponding power supply terminals of the detection circuit 2, the low frequency amplifier circuit 3, and the signal output circuit 4, the output terminal of the detection circuit 2 is connected to the input terminal of the low frequency amplifier circuit 3, and the output terminal of the low frequency amplifier circuit 3 is connected to the signal output The input terminal of the circuit 4, the power circuit 1 includes a DC voltage source U1, the DC voltage source U1 can output DC voltages of +12V and -12V, and the detection circuit 2 is used to rectify the received target intermediate frequency signal that needs to extract parameters , signal amplification and filtering, the low-freque...
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