DocumentCode :
3096065
Title :
Experimental and theoretical results of new unidirectional interdigital transducers using floating electrodes
Author :
Yamanouchi, Kazuhiko ; Odagawa, Hiroyuki ; Iwai, Ikuya
Author_Institution :
Tohoku Univ., Sendai, Japan
fYear :
2013
fDate :
21-25 July 2013
Firstpage :
745
Lastpage :
748
Abstract :
We propose the new configurations of the internal reflection type of unidirectional IDT with the high transduction using high coupling substrates of 128° YX LiNbO3 [1], 36° YX LiTaO3 [2] and SiO2/YX-LiNbO3[3] with k2=0.3 and zero Temperature Coefficient of Frequency (TCF). The theoretical and experimental results showed the good directivities. Moreover we describe weighting method for the FEUDT filters.
Keywords :
acoustic filters; acoustic wave reflection; electrodes; interdigital transducers; FEUDT filters; LiNbO3; LiTaO3; SiO2-LiNbO3; TCF coefficient; floating electrodes; high coupling substrates; high transduction effect; internal reflection; unidirectional IDT; unidirectional interdigital transducers; weighting method; zero temperature frequency coefficient; Couplings; Educational institutions; Electrodes; Reflection; Reflectivity; Substrates; Surface acoustic waves; FEUDT; distance weighting; low-loss wide-band filter; surface acoustic wave; zero-TCF;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Ultrasonics Symposium (IUS), 2013 IEEE International
Conference_Location :
Prague
ISSN :
1948-5719
Print_ISBN :
978-1-4673-5684-8
Type :
conf
DOI :
10.1109/ULTSYM.2013.0192
Filename :
6725015
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=3096065
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