Title :
Two-port SAW resonator using series connected IDTs
Author :
Kojima, Toshihiro ; Obara, Hiroyuki
Author_Institution :
Fac. of Eng., Tamagawa Univ., Machida, Japan
Abstract :
A two-port SAW resonator using series connected IDTs is proposed. This type of resonator has an advantage over a conventional two-port SAW resonator in that the design condition of the number of finger pairs of an IDT for high performance is not strict, since the impedance level of series connected IDTs is very high. We have analyzed this type of resonator using six-port equivalent circuits and their transfer matrices of an N-pair of IDT for series connection. Finally, by numerical calculation, the resonance characteristics of these types of resonator on LiNbO3 (128° Y,X) are investigated
Keywords :
equivalent circuits; interdigital transducers; surface acoustic wave resonator filters; surface acoustic wave resonators; transfer function matrices; LiNbO3; design condition; high impedance level; high performance; insertion loss; number of finger pairs; series connected IDT; six-port equivalent circuits; transfer matrices; two-port SAW resonator; Capacitance; Equivalent circuits; Fingers; Frequency; Impedance; Insertion loss; Resonance; Surface acoustic wave devices; Surface acoustic waves; Transmitters;
Conference_Titel :
Ultrasonics Symposium, 1998. Proceedings., 1998 IEEE
Conference_Location :
Sendai
Print_ISBN :
0-7803-4095-7
DOI :
10.1109/ULTSYM.1998.762104
