RADIO-FREQUENCY SIGNAL RECEPTION CIRCUIT AND ISOLATED SIGNAL TRANSMISSION APPARATUS

摘要

A radio-frequency signal reception circuit that detects an input signal includes an input reference terminal, a first input terminal into which a first input signal is input, a second input terminal into which a second input signal is input, an output terminal and output reference terminal from which an output signal is output, a first detector circuit that detects the first input signal and outputs a first output signal, which is a positive-voltage pulse signal, to the output terminal, a second detector circuit that detects the second input signal and outputs a second output signal, which is a positive-voltage pulse signal, to the output reference terminal, and a transistor connected to the input reference terminal and output reference terminal. The input signal includes the first input signal and second input signal. The output signal includes the first output signal and second output signal.

主权项

1. A radio-frequency signal reception circuit including:
a first input terminal into which a first input signal is input, the first input signal including a first modulated radio-frequency signal; a second input terminal into which a second input signal is input, the second input signal including a second modulated high frequency signal; an input reference terminal to which a reference potential of the first and second input signals is applied; an output terminal from which a first output signal is output; an output reference terminal from which a second output signal is output; a first detector circuit that detects the first input signal and outputs the first output signal to the output terminal, the first output signal including a first positive-voltage pulse based on the reference potential; a second detector circuit that detects the second input signal and outputs the second output signal to the output reference terminal, the second output signal including a second positive-voltage pulse based on the reference potential; and a transistor that includes a first terminal, a second terminal, and a control terminal, the first terminal and control terminal being connected to the input reference terminal, the second terminal being connected to the output reference terminal.