Abstract

A surface acoustic wave resonator is described which utilizes electrically shorted gratings to form a resonant acoustic cavity where energy is introduced and removed by means of a short interdigital transducer placed in the center. Experimental results are presented for a device with two 100−finger pair gratings and a 9.5−finger pair central interdigital transducer (IDT) and compared with theoretical calculations. The device exhibits a resonant Q of 2300 at 47.55 MHz.

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