Wave transmission lines and networks – Coupling networks – Electromechanical filter
Patent
1991-09-04
1993-02-23
Dzierzynski, Paul M.
Wave transmission lines and networks
Coupling networks
Electromechanical filter
3332192, 333204, H03H 734, H01P 700
Patent
active
051893835
ABSTRACT:
A circuit element utilizing a magnetostatic wave is disclosed which uses a magnetostatic-wave resonator having a structure that a thin YIG (yttrium iron garnet) film is formed on a non-magnetic substrate such as a GGG (gadolinium gallium garnet) substrate. In this resonator, at least a part of end faces of the ferrimagnetic film are made rough such as by lapping with abrasives having a grain size greater than or equal to about 15 .mu.m, to suppress the generation of a unnecessary spurious mode in a wide frequency range.
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patent: 4743874 (1988-05-01), Kinoshita et al.
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patent: 5017895 (1991-05-01), Buck et al.
patent: 5017896 (1991-05-01), Adam et al.
patent: 5053734 (1991-10-01), Murakami et al.
IEEE Transactions on Magnetics, vol. MAG-20, No. 5, Sep. 1984, pp. 1232-1234 entitled, "MSSW Resonators With Straight Edge Reflectors".
Journal of Applied Physics vol. 36, No. 11, Nov. 1965, pp. 3453-3459 "Propagation of Magnetostatic Spin Wave at Microwave Frequencies in a Normally-Magnetized Disk*" by R. W. Damon and H. Van De Vaart.
Ito Kohei
Murakami Yasuhide
Dzierzynski Paul M.
Hitachi Metals Ltd.
Neyzari Ali
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