HIGH-FREQUENCY SIGNAL RECEIVER

摘要

PROBLEM TO BE SOLVED: To reduce reception error even under a reception condition where the level of an interference signal close to a desired signal is high. SOLUTION: A high-frequency signal receiver includes a weighting circuit 305 which is inserted between an AGC control circuit 321 and a gain control terminal 322, and to another input of which the output voltage of an AGC control circuit 306 is connected. The weighting circuit 305 combines output voltages of the AGC control circuits 321 and 306 and outputs the resultant voltage to an AGC circuit 302 and when there is an interference signal of a high level in a frequency close to the desired signal, the gain of the AGC circuit 302 is corrected to be increased. COPYRIGHT: (C)2006,JPO&NCIPI