Patent ID: 9461587
Filing Date: 2016-10-04
CPC Classification: H03D,H04B

Claim Text:
1. An FM receiver comprising: a quadrature detection device that quadrature-detects an FM signal; an FM detector that generates a detection signal by FM detecting an FM signal that has been quadrature-detected in the quadrature detection device; an AFC unit that generates a control signal for controlling a frequency of a local oscillation signal used in the quadrature detection device on the basis of the detection signal generated in the FM detector, and feeds back the control signal to a local oscillator that should output the local oscillation signal; a difference calculator that generates a differential signal between the detection signal and a reference value that generated the detection signal of a predetermined timing in the FM detector; and an addition unit that adds the difference signal generated in the difference calculator and the detection signal generated in the FM detector.