학술논문
2D Scalar Wave Model for Fast Analysis of Apodized BAW Devices
Document Type
Conference
Author
Source
2022 IEEE International Ultrasonics Symposium (IUS) Ultrasonics Symposium (IUS), 2022 IEEE International. :1-4 Oct, 2022
Subject
Language
ISSN
1948-5727
Abstract
This paper proposes use of a two-dimension (2D) scalar wave model for fast analysis of apodized AlN-based RF BAW devices. First, the working principle and model setup are introduced. Only one particular Lamb mode (S 1- ) is considered, and its behavior is modeled by a simple scalar wave equation looking from the top surface. A multiple layers are added to the side boundaries so that mode conversion to other modes is treated as leakage to surrounding. The wavenumber of field distribution for each resonance mode are calculated, and then its excitation coefficient, quality factor and resonance frequency are derived. The device input admittance is calculated by applying derived parameters to the equivalent circuit. Its experimental verification will be discussed near future.