Piezo Technology Inc.

Robert C Smythe

Harry F Tiersten

A crystal resonator having reduced acceleration sensitivity in which the resonator blank having one or more electrodes thereon has stiffening cover plates mounted to its top and bottom faces and spaced from the resonator blank by sidewalls.

Crystal resonator having reduced acceleration sensitivity

A crystal resonator device having a plurality of coupled resonators in which the relative phase and magnitude of the resonator excitation currents is controlled by electrical circuit means such as reactance components connected in series with one or more of the resonators to thereby minimize or otherwise control the acceleration sensitivity of the device.

Crystal resonator with acceleration sensitivity adjustable by external

A resonator and resonator type wave filter formed by a piezoelectric body on which acoustic surface waves are guided and reflected and in which mode coupling in a direction transverse to the surface wave propagation is utilized. The transverse modes are controlled so as to provide improved response characteristics by minimizing suppressing and/or otherwise controlling unwanted modes of vibration in the body.

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Orlando, FL, United States of America

Robert C Smythe