| http://www.w3.org/ns/prov#value | - A SAW filter comprising a group of N tracks, where N is an integer greater than or equal to two, including an input interdigitated transducer (IDT) spaced apart from an output IDT and a reflector disposed substantially collinear with and adjacent the input and output IDTs, wherein respective tracks are selected to have different effective electro-acoustic lengths such that surface acoustic raves l
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