Patent ID: 7392024
Filing Date: 2008-06-24
Classification: H04B,H04H

Abstract:
1. A radio receiver, comprising: a first down-converter for down-converting a received radio signal to produce an intermediate frequency multiple signal; and a second down-converter for down-converting the intermediate frequency multiple signal to produce an input signal, wherein the second down-converter has: a first path; a second path; a divider for dividing the intermediate frequency multiple signal into signals going to the first path and the second path; and a mixer section, the first path transmits the intermediate frequency multiple signal from the divider to the mixer section, the second path has a filter for extracting a reference signal from the intermediate frequency multiple signal and transmits the reference signal to the mixer section, and the mixer section multiplies the intermediate frequency multiple signal from the first path by the reference signal from the second path so as to perform frequency down-conversion of the intermediate frequency multiple signal.