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A low-loss narrow band (below 3%) resonant filter has been achieved using twin-turn reflectors and a surface shear wave mode on 36° YX LiTaO3 substrate.
References
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1)
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Nakamura, K., Kazumi, M., Shimizu, M.: `SH-type Rayleigh-type surface waves on roted ', 1977 ultrasonics symposium proceedings, IEEE, p. 819–822.
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2)
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Y. Kinoshita ,
M. Hikita ,
T. Tabuchi ,
H. Kojima
.
Broadband resonant filter using surface-shear-wave mode and twin-turn reflector.
Electron. Lett.
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130 -
131
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3)
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M. Hikita ,
Y. Kinoshita ,
H. Kojima ,
T. Tabuchi
.
Sidelobe suppression of s.a.w. resonant filter using twin turn reflectors.
Electron. Lett.
http://iet.metastore.ingenta.com/content/journals/10.1049/el_19800314
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content/journals/10.1049/el_19800314
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