Patent ID: 7821360

Claim:
A multi-channel surface acoustic wave (SAW) filter, comprising: a voltage controlled velocity tunable piezoelectric substrate; an input transducer fabricated on the substrate and including a plurality of input sub-transducers electrically and physically connected in parallel to produce an input transducer voltage controlled tunable COMB frequency response, each input-sub-transducer having a unique voltage controlled tunable center frequency; an output transducer fabricated on the substrate and including a plurality of output sub-transducers electrically and physically connected in parallel to produce an output transducer voltage controlled tunable COMB frequency response, each output sub-transducer having a unique voltage controlled tunable center frequency; and a plurality of parallel channels formed by corresponding pairs of the plurality of input sub-transducers and the plurality of output sub-transducers, wherein the input transducer voltage controlled tunable COMB frequency response and output transducer voltage controlled tunable COMB frequency response are combined to produce an associated SAW filter voltage controlled tunable frequency response.