DocumentCode
1460363
Title
A SAW resonator filter using longitudinal and transverse modes
Author
Martin, Guenter ; Wall, Bert
Author_Institution
Inst. fuer Festkoerper- und Werkstofforschung, Dresden, Germany
Volume
45
Issue
6
fYear
1998
Firstpage
1559
Lastpage
1564
Abstract
A SAW resonator filter using not only transverse but also longitudinal modes is presented. The design principle permits to construct four-pole filters without cascading or parallel connection. The input and output transducers arranged side by side have equal construction characterized by unsymmetrical withdrawing weighting. Neighboring disturbing longitudinal modes are suppressed due to weighting determined by an iterative procedure. The successful application of the principle to a device is demonstrated by experimental measurements.
Keywords
surface acoustic wave resonator filters; SAW resonator filter; design; four-pole filter; iterative weighting; longitudinal mode; transducer; transverse mode; Electrical capacitance tomography; Ferroelectric materials; Passband; Resonance; Resonator filters; Surface acoustic waves; Ultrasonic transducers; Ultrasonics, ferroelectrics, and frequency control;
fLanguage
English
Journal_Title
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
Publisher
ieee
ISSN
0885-3010
Type
jour
DOI
10.1109/58.738295
Filename
738295
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