DocumentCode
2481664
Title
P5I-2 Lower-Loss Filters on Langasite
Author
Makarov, V.M. ; Ivanov, P.G. ; Dai, J.
Author_Institution
Moscow Eng.-Phys. Inst., Moscow
fYear
2007
fDate
28-31 Oct. 2007
Firstpage
2359
Lastpage
2362
Abstract
The advantages of langasite as a substrate material for SAW filters are not realized entirely till now because of the natural unidirectivity of most cuts available for practical applications. This paper presents new results that allow the utilization of langasite for SAW filters. The mathematic model, SPUDT cell structures and design method were developed for naturally unidirectional orientations. This approach allows designs of slanted and RSPUDT filters on yxlt/48.5726.6deg langasite with 7 dB - 10 dB insertion losses and bandwidths 1% - 3%.
Keywords
gallium compounds; lanthanum compounds; substrates; surface acoustic wave filters; surface acoustic wave transducers; La3Ga5SiO14; RSPUDT filters; SAW filters; insertion losses; langasite; loss 7 dB to 10 dB; low-loss filters; single phase unidirectional transducers; slanted filters; substrate material; unidirectional orientation; Acoustic transducers; Circuit simulation; Equivalent circuits; Fingers; Optical films; Reflection; Resonator filters; SAW filters; Transformers; Ultrasonic transducers;
fLanguage
English
Publisher
ieee
Conference_Titel
Ultrasonics Symposium, 2007. IEEE
Conference_Location
New York, NY
ISSN
1051-0117
Print_ISBN
978-1-4244-1384-3
Electronic_ISBN
1051-0117
Type
conf
DOI
10.1109/ULTSYM.2007.593
Filename
4410166
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