Patent · US Active

BAW resonator, RF filter, multiplexer and method of manufacturing a BAW resonator

US11482985B2 · kind B2 · utility

1Cited by

0References

26Claims

0Family size

Assignee

RF360 Europe GmbH · US

Inventors

Franz Sebastian Fries · Munich, DE
Christian Huck · Landeck, AT
Maximilian SCHIEK · Puchheim, DE
Willi AIGNER · Moosinning, DE

Key dates

Filing date	Feb 27, 2019
Grant date	Oct 25, 2022
Priority date	—
Expiry date	Feb 27, 2039

Classification

Technology area (CPC H)Electricity
CPC primaryH03H2003/045
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

A BAW resonator with an improved lateral energy confinement is provided. The resonator has a bottom electrode in a bottom electrode layer, a top electrode in a top electrode layer and a piezoelectric layer between the bottom electrode layer and the top electrode layer. The piezoelectric layer comprises piezoelectric materials of different piezoelectric polarities.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.