Wave transmission lines and networks – Coupling networks – Wave filters including long line elements
Patent
1997-08-21
1999-03-16
Gensler, Paul
Wave transmission lines and networks
Coupling networks
Wave filters including long line elements
333 241, H01P 1215
Patent
active
058835555
ABSTRACT:
A magnetostatic wave device includes a Gd.sub.3 Ga.sub.5 O.sub.12 substrate off-angled from a {110} plane. A magnetic thin film including a crystal of garnet is formed on the Gd.sub.3 Ga.sub.5 O.sub.12 substrate by liquid-phase epitaxy. A transducer is operative for exciting magnetostatic wave in the magnetic thin film in response to an RF electric signal. A bias magnetic field is applied to the magnetic thin film. There is a relation as 20.degree..ltoreq..vertline..theta..sub.1 +.theta..sub.2 .vertline..ltoreq.35.degree., where ".theta..sub.1 " denotes an angle between a longitudinal direction of the transducer and a <001> orientation of the crystal in the magnetic thin film, and ".theta..sub.2 " denotes an angle between a direction of the bias magnetic field and a transverse direction of the transducer which is perpendicular to the longitudinal direction thereof.
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"A Consideration On MSSW /BVW Hybrid Modes For An S/N Enhancer"by T. Kuki et al; 1996.
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"A Reflection Type Of MSW Signal-To-Noise Enhancer In The 400-MHz Band" By T. Kuki et al; 1995 IEEE MIT-S Digest.
"Surface Morphologies and Quality of Thick Liquid Phase Epitaxial Garnet Films For Magneto-Optic Devices" by T. Hibiya; Journal of Crystal Growth 62 (1983)87-94; North-Holland Publishing Company.
Ikari Masanori
Kuki Takao
Nomoto Toshihiro
Ryuo Toshihiko
Tanno Masayuki
Gensler Paul
Nippon Hoso Kyokai
Shin-Etsu Chemical Co. , Ltd.
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