Patent ID: 8183915
Filing Date: 2012-05-22
Classification: H03L

Abstract:
1. A receiving device comprising: an input terminal of a reference oscillation signal; a synthesizer for producing a local oscillation signal based on the reference oscillation signal from the input terminal; a receiver for receiving a signal; a frequency converter for converting a frequency of an output signal from the receiver by using the local oscillation signal output from the synthesizer; a demodulator for demodulating a signal output from the frequency converter; a difference detector for detecting a difference between a frequency of a signal and a predetermined frequency, the signal being output from at least one the input terminal, the synthesizer, and the frequency converter, and a controller for adjusting a frequency of the local oscillation signal output from the synthesizer based on a detection result of the difference detector; wherein a frequency adjustment unit of the synthesizer used by the controller is smaller than a frequency variation tracking capability of the demodulator.