K-Cut Quartz SAW Resonators for Stable Frequency Sources

Michiaki Takagi, Eishi Momosaki, Makoto Yamakita, and Nobunori Oura

Abstract A new type of quartz SAW resonator for use as a stable frequency source has been developed. It was studied from the point of view of frequency instability caused by transient thermal behavior, and a new angle of cut named the K-cut for quartz SAW resonators was found. The static and dynamic frequency temperature coefficients are both zero at a room temperature. Taking into consideration the influence of the electrode-film thickness, the width modes of the waves, and power-flow angles, optimized resonators and oscillators were designed. These devices had frequency stability of 2 x 10-10 for the mean time of 0.01 s.

1998 IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control 45:328-337

© 1998, by The Institute of Electrical and Electronics Engineers, Inc. All rights reserved.

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