DRIVE CIRCUIT FOR HIGH-FREQUENCY SIGNAL, METHOD OF DRIVING DRIVE CIRCUIT FOR HIGH-FREQUENCY SIGNAL, AND HIGH-FREQUENCY SIGNAL RECEIVER

摘要

PROBLEM TO BE SOLVED: To provide a drive circuit for a high-frequency signal that allows reducing a noise level, a method of driving the drive circuit for a high-frequency signal, and a high-frequency signal receiver.SOLUTION: A high-frequency signal transmitter/receiver 10 includes: a detection circuit 14 for detecting a high-frequency signal having a variable signal level; a variable-frequency oscillation circuit 150 for generating a spectrum-spreaded clock signal according to an output voltage from the detection circuit 14; a switch-controlled bias circuit 16 for generating a bias signal by using the clock signal generated by the variable-frequency oscillation circuit 150; and a high-frequency signal transmitting/receiving circuit 12 for processing the high-frequency signal by using the bias signal.