Patent ID: 7366486
Filing Date: 2008-04-29
Classification: H01F,H01L,H03B,H03D,H03F,H03G,H03H,H03J,H03L

Abstract:
1. A method of tuning a receiver, comprising: receiving a plurality of channels; mixing said plurality of channels with a first differential local oscillator signal to produce a first IF signal; filtering said first IF signal in a first bandpass filter; coarsely adjusting a frequency of said first differential local oscillator signal so that a selected channel and at least one other channel in said first IF signal falls in a passband of said first bandpass filter; mixing said first IF signal with a second differential local oscillator signal to produce a second IF signal; and finely adjusting a frequency of said second differential local oscillator signal so said selected channel falls in a passband of a second bandpass filter.