Patent ID: 7187733

Claim:
A high-frequency signal receiver comprising: a first variable gain amplifier for amplifying a high frequency signal input thereto; a first local oscillator; a first mixer for mixing a signal output from said first variable gain amplifier and a signal output from said first local oscillator; a first filter for receiving a signal output from said first mixer; a first gain controller for outputting a voltage according to said signal output from said first mixer; a second variable gain amplifier for amplifying a signal output from said first filter; a second local oscillator; a second mixer for mixing a signal output from said second variable gain amplifier and a signal output from said second local oscillator; a second filter for receiving a signal output from said second mixer; a second gain controller for outputting a voltage which determines a gain of said second variable gain amplifier according to a signal output from said second filter; a weighting circuit for weighting and summing said voltage output from said first gain controller and said voltage output from said second gain controller for controlling a gain of said first variable gain amplifier; and a weighting controller for determining respective weighting factors for said voltage output from said first gain controller and said voltage output from said second gain controller which are used in said weighting circuit.