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1. (WO2018125516) BAW RESONATOR AND RESONATOR ARRANGEMENT

Pub. No.:    WO/2018/125516    International Application No.:    PCT/US2017/064253
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Sat Dec 02 00:59:59 CET 2017
IPC: H03H 9/17
H03H 9/54
Applicants: SNAPTRACK, INC.
Inventors: SCHIEK, Maximilian
MOULARD, Dr. Gilles
SCHMIEDGEN, Monika
SCHWÖBEL, André
Title: BAW RESONATOR AND RESONATOR ARRANGEMENT
Abstract:
A BAW resonator (1) comprises a piezoelectric layer (2) located between a top electrode (4) and a bottom electrode (3) and comprises a dielectric layer (9) located between the bottom electrode (3) and an additional electrode (11), wherein the dielectric layer (9), the bottom electrode (3) and the additional electrode (11) are configured to provide an additional capacitance in the resonator (1). The BAW resonator (1) may be part of a ladder-type resonator arrangement (100).