Patent ID: 6990154

Claim:
An apparatus for producing an RF transmission signal including a plurality of frequency channels, comprising: an IF processor having a first input for receiving a baseband signal and a second input for receiving a first combining signal, said IF processor for combining the baseband signal with the first combining signal to produce an IF signal; an RF processor having a first input coupled to said IF processor for receiving the IF signal and a second input for receiving a second combining signal, said RF processor for combining the IF signal with the second combining signal to produce said RF transmission signal including the plurality of frequency channels separated by a desired frequency channel spacing; a first frequency synthesizer coupled to said second input of said IF processor for providing the first combining signal at one of a plurality of possible frequencies separated from one another by a raster component of said desired frequency channel spacing; and said first frequency synthesizer including a comparison frequency generator for generating a comparison frequency corresponding to said raster component, said first frequency synthesizer responsive to said comparison frequency for producing the first combining signal.