Acoustic wave devices

Details Acoustic wave devices Acoustic wave devices

H - Electricity

01

P

333/89

H01P 7/00 (2006.01) H03H 9/64 (2006.01)

Patent

CA 1132211

1 PHB 32611 ABSTRACT: SAW Resonator filter with traps. A coupled acoustic surface wave resonator filter having two transducers in each resonator cavity. A capac- itance may be provided between two sets of electrodes, one set from each transducer in one of the cavities, coupled to the same phase of standing wave energy for the format- ion of a high frequency attenuation pole. Independently, another capacitance may be provided between two sets of electrodes, one set from each transducer in another one of the cavities, coupled to opposite phases of standing wave energy for the formation of a low frequency attenuation pole.

321704

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