Patent ID: 8175199
Filing Date: 2012-05-08
Classification: H03D,H03J,H03L,H04B

Abstract:
1. A wireless receiver which converts a received radio frequency signal into an intermediate frequency signal and demodulates the intermediate frequency signal, comprising: a local oscillator for discontinuously changing a band of a local oscillation signal corresponding to a frequency band of the radio frequency signal to be received in accordance with the frequency band, and outputting the local oscillation signal; a frequency converter for converting the radio frequency signal into the intermediate frequency signal by using the local oscillation signal outputted from the local oscillator, and outputting the intermediate frequency signal; and a demodulator for demodulating the intermediate frequency signal outputted from the frequency converter, wherein the local oscillator detects a frequency variation range of the local oscillation signal within the frequency band, obtains a frequency equivalent to an integral multiple of a symbol rate from the frequency variation range, and outputs the local oscillation signal having a local oscillatory frequency, causing a center frequency of a channel to be received, which channel is included in the intermediate frequency signal, to be equivalent to an integral multiple of the symbol rate.