18924391. RESONATOR WITH COMPLEMENTARILY ORIENTED PIEZOELECTRIC STRUCTURE (MURATA MANUFACTURING CO., LTD.)
RESONATOR WITH COMPLEMENTARILY ORIENTED PIEZOELECTRIC STRUCTURE
Organization Name
MURATA MANUFACTURING CO., LTD.
Inventor(s)
John P. Koulakis of Los Angeles CA US
Garrett Williams of San Mateo CA US
Soumya Yandrapalli of Amsterdam NL
Sean Mchugh of San Mateo CA US
RESONATOR WITH COMPLEMENTARILY ORIENTED PIEZOELECTRIC STRUCTURE
This abstract first appeared for US patent application 18924391 titled 'RESONATOR WITH COMPLEMENTARILY ORIENTED PIEZOELECTRIC STRUCTURE
Original Abstract Submitted
An acoustic resonator is provided that includes a first piezoelectric layer of a material with a first crystallographic orientation and a second piezoelectric layer coupled to the first piezoelectric layer and comprising a material with a second crystallographic orientation, such that a piezoelectric tensor of the second piezoelectric layer is an opposite polarity to a piezoelectric tensor of the fist piezoelectric layer. Moreover, an interdigital transducer (IDT) including interleaved fingers is disposed on a surface of the first piezoelectric layer; and a first dielectric coating layer is disposed over the IDT and the first piezoelectric layer.
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