RADIO-FREQUENCY PIEZOELECTRIC ELEMENT Russian patent published in 1997 - IPC

FIELD: piezoelectronics, applicable in production of piezoelectric elements for RF piezoelectric resonators and monolithic filters. SUBSTANCE: RF piezoelectric element of the back-type mesa- structure is made of a single-crystal wafer in the form of a thinned central part with a thicker shoulder surrounding it; the shoulder is made with a rupture, whose width makes up 20 to 400 thickness of the thinned part of the piezoelectric element. EFFECT: improved design. 4 dwg