Design of IF Two-Track Surface Acoustic Wave Filters Using (100) AlN/Diamond Structures
Journal
IUTAM Bookseries
Journal Volume
26
ISBN
9789048198924
Date Issued
2010-01-01
Author(s)
Abstract
In this paper, characteristics of two-track surface acoustic wave (SAW) filters based on Cu electrode/(100) AlN/diamond structures were analyzed using the finite element method (FEM) and the transmission matrix method. To achieve optimum performance, the Chebyshev window function was used to modify the reflectivity distributions of reflectors. The SAW parameters for weighted reflectors with various electrode thicknesses and different metallization ratios are retrieved using the FEM. The transmission matrix method was then employed to calculate the scattering parameters of weighted reflectors and two-track SAW filters. Simulation results show a two-track SAW filter with low insertion loss, good shape factor, good sidelobe suppression, small group delay, and flat passband can be tailored and applicable to the code division multiple access (CDMA) system.
Subjects
Code Division Multiple Access | Code Division Multiple Access System | Electrode Thickness | Finite Element Method Model | Surface Acoustic Wave
Type
conference paper