Title :
A SAW resonator filter using longitudinal and transverse modes
Author :
Martin, G. ; Wall, B.
Author_Institution :
Inst. fuer Festkorper- und Werkstofforschung, Dresden, Germany
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; four-pole filter; iterative method; longitudinal mode; transducer; transverse mode; unsymmetrical withdrawing weighting; Frequency; Passband; Resonance; Resonator filters; Surface acoustic waves; Ultrasonic transducers;
Conference_Titel :
Ultrasonics Symposium, 1996. Proceedings., 1996 IEEE
Conference_Location :
San Antonio, TX
Print_ISBN :
0-7803-3615-1
DOI :
10.1109/ULTSYM.1996.583788
