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K-cut quartz SAW resonators for stable frequency sources

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4 Author(s)
M. Takagi ; Div. of Res. & Dev., Seiko Epson Corp., Nagano, Japan ; E. Momosaki ; M. Yamakita ; N. Oura

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/spl times/10/sup -10/ for the mean time of 0.01 s.

Published in:

IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control  (Volume:45 ,  Issue: 2 )