UA44104U - Sensor on surface acoustic waves - Google Patents

Abstract

Sensor on surface acoustic waves has pad as acoustic wave guide of surface acoustic waves, transformer of surface acoustic waves and two reflectors of surface acoustic waves. Transformer of surface acoustic waves and two reflectors of surface acoustic waves are placed on one of working surfaces of the pad along its long axis at distance one from another. Sensor additionally has second set formed of transformer of surface acoustic waves and reflectors of surface acoustic waves. At that additional transformer of surface acoustic waves are reflectors of surface acoustic waves are placed at other working surface of the pad. Basic and additional reflectors of surface acoustic waves are placed at their working surfaces of the pad along its long axis at distance one from another. At that basic transformer of surface acoustic waves and basic transformers of surface acoustic waves are placed mostly symmetrically with respect to additional transformer of surface acoustic waves and additional reflectors of surface acoustic waves with respect to axis of symmetry of pad and plane that goes at long axis of the pad in parallel to working surfaces of the pad. Additional reflectors of surface acoustic waves are placed from each other at their working surface at distance differing from distance between the basic reflectors of surface acoustic waves.