UHF range surface acoustic wave filters using uni-directional interdigital transducers.

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Analysis and Design of Dispersive Interdigital Surface-Wave Transducers

A comprehensive circuit model characterization of dispersive interdigital transducers with nonuniform electrode spacing is presented. The model is an extension of a three-port circuit which has been useful for representing periodic transducers. The extended model includes the effects of strong piezoelectric coupling whereby the acoustic waves and electric circuits interact, and it also accounts...

متن کامل

Embedded interdigital transducers for high-frequency surface acoustic waves on GaAs

We investigate high-performance, high-frequency interdigital transducers (IDTs) for the generation of surface acoustic waves (SAWs) on GaAs substrates, where the metal fingers are embedded in the substrate. We demonstrate that the acoustic reflections and the scattering of the surface modes into the substrate become considerably reduced in these transducers, leading to an increased output power...

متن کامل

Surface Acoustic Wave Filters, Unitary Extensions and Schur Analysis

We study the concept of a mixed matrix in connection with linear fractional transformations of lossless and passive matrix-valued rational functions, and show that they can be parametrized by sequences of elementary chain matrices. These notions are exemplified on a model of a Surface Acoustic Wave filter for which a state-space realization is carried out in detail. The issue of optimal design ...

متن کامل

Enhanced Sensitivity of Novel Surface Acoustic Wave Microelectromechanical System-Interdigital Transducer Gyroscope

In this paper, we present a novel microelectromechanical system-interdigital transducer (MEMS-IDT) surface acoustic wave (SAW) gyroscope with an 80MHz central frequency on a 128 YX LiNbO3 wafer. The developed MEMS-IDT gyroscope is composed of a two-port SAW resonator, a dual delay line oscillator, and metallic dots. The SAW resonator provides a stable standing wave, and the vibrating metallic d...

متن کامل

Curvature Measurements of Stressed Surface-acoustic-wave Filters Using Bragg Angle Contour Mapping

Surface-acoustic-wave (SAW) transversal filters consist of piezoelectric single-crystal quartz plates (dies) with interdigital thin film transducers. The performance of these devices is critically dependent on the spacing and geometry of the interdigitation. Any manufacturing process errors that affect the geometry of the transducers and/or the surface acoustic wave speed will affect the device...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Proceedings of the Japan Academy, Series B

سال: 1978

ISSN: 0386-2208,1349-2896

DOI: 10.2183/pjab.54.294