Patent ID: 6542724
Filing Date: 2003-04-01
Classification: H03B,H04B

Abstract:
A radio signal processing device comprising:a tunable local oscillator to generate a signal at a selected frequency within a certain frequency range, the selected frequency being a first frequency; a transmitter, including: a) an input for receiving an IF signal; b) a power amplifier having an output for releasing an amplified RF signal from said transmitter; c) a mixer for converting the IF signal received at said input to a control RF signal; d) an amplifier driver coupled to said mixer for receiving the control RF signal from said mixer, said amplifier driver operative to drive said power amplifier such that said power amplifier generates the amplified RF signal; e) a filter coupled to said amplifier driver for performing image signal rejection at a second frequency, said filter operative to alter the second frequency such that the second frequency tracks the first frequency.