发明名称 X33 cut quartz for temperature compensated SAW devices
摘要 An X-cut, 33.44 degree quartz crystal for propagating surface acoustic waves with a temperature stability in the order of -0.0209 ppm/C2. The crystal orientation requires only a single rotation (33.44 DEG ) from the crystal axes. This orientation is substantially simpler than previously reported cuts with comparable temperature stability which typically require three rotations. The X cut orientation has a surface acoustic wave (SAW) velocity of 3175 m/sec, an electromechanical coupling ( DELTA v/v) of 4x10-4, and a power flow angle of 2.7 degrees.
申请公布号 US4602182(A) 申请公布日期 1986.07.22
申请号 US19840614190 申请日期 1984.05.25
申请人 THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE AIR FORCE 发明人 WEBSTER, RICHARD T.
分类号 H03H9/02;(IPC1-7):H01L41/08 主分类号 H03H9/02
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