DocumentCode :
2908818
Title :
Miniaturized SAW filter structure using unidirectional quadrature IDT couplers
Author :
Shiba, Takashi ; Ide, Mayumi ; Fujita, Yuji
Author_Institution :
Hitachi Media Electron. Ltd., Yokohama, Japan
Volume :
2
fYear :
2003
fDate :
5-8 Oct. 2003
Firstpage :
2093
Abstract :
A new single track structure for this unidirectional quadrature IDT coupler has been proposed to reduce a device size. Advantages of the device size and bandwidth for this structure are verified by the calculations and the experiments. The double mode IDTs structure on X-112°Y LiTaO3 and 190 MHz center frequency are chosen for the experiment.
Keywords :
interdigital transducers; lithium compounds; surface acoustic wave couplers; surface acoustic wave filters; surface acoustic wave transducers; 190 MHz; LiTaO3; SAW filter structure; interdigital transducer; quadrature IDT couplers; unidirectional coupler; Bandwidth; Couplers; Electrodes; Equations; Equivalent circuits; Gratings; Phase shifters; SAW filters; Surface acoustic waves; Transducers;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Ultrasonics, 2003 IEEE Symposium on
Print_ISBN :
0-7803-7922-5
Type :
conf
DOI :
10.1109/ULTSYM.2003.1293332
Filename :
1293332
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=2908818
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