Abstract
A theoretical study of the surface-acoustic-wave (SAW) properties of quartz has produced a new cut which is temperature compensated along two orthogonal directions. This new cut is attractive for use in reflection-grating devices such as the reflective array compressor (RAC), in which orthogonal propagation paths are required. Except for a small electromechanical power flow angle, the SAW properties along the two temperature-compensated directions are similar to those of x-propagating ST-cut quartz. Because the attractive propagation paths lie in the plane of a singly rotated crystal cut, it should be relatively easy and inexpensive to manufacture.
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