NDLI: Source equalization for SPUDT transducers

Content Provider	IEEE Xplore Digital Library
Author	Dufilie, P. Ventura, P.
Copyright Year	1995
Description	Author affiliation: Thomson Components & Tubes Corp., Vernon, CT, USA (Dufilie, P.)
Abstract	The electroacoustic source strength for a periodic SAW transducer can be determined analytically. With the exception of sources close to the ends of the transducer, the source strength function does not depend on its position in the transducer. A Distributed Acoustic Reflection Transducer (DART) is not periodic and consists of two or more linewidths and strip periods. The source strength and effective source position of a strip is dependent on the widths and positions of the adjacent strips. Strips of a given width can exhibit source strength differences of 10% or more depending on their position in the DART. This paper presents two methods for predicting the source strength and effective position of a source in a DART. The first method uses an electrostatic Green's function analysis. The second more complete method uses a mixed FEM/BEM analysis to obtain a more accurate result. Results of these two methods are compared for various transducer configurations. Using the above results a 112 MHz filter was designed and built on a 112/spl deg/YX LiTaO/sub 3/ substrate.
Starting Page	13
Ending Page	16
File Size	220349
Page Count	4
File Format	PDF
ISBN	0780329406
ISSN	10510117
DOI	10.1109/ULTSYM.1995.495532
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-11-07
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Strips Acoustic reflection Acoustic transducers Electrostatic analysis Surface acoustic waves Green's function methods Filters Computer simulation Acoustic measurements Geometry
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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