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Characteristics of a high Q filter composed of a magnetic thin-film layered structure with periodic corrugation

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2 Author(s)
Chang, N.S. ; Osaka Electro-Communication University, Neyagawa, Osaka, Japan ; Erkin, S.

The X-band microwave filter characteristics of magnetostatic surface waves (MSSW) in a magnetic layered structure with sinusoidal corrugation on top layer are described. Bragg reflection type filters having a high Q value are numerically evaluated by solving the dispersion relation derived from a singular perturbation method using multiple space scales (MSS). We can conclude that the high Q filter, Q=10000 on our model can be easily obtained by adjusting the saturation magnetization of a noncorrugated layer and the length of corrugation period. The results of our model can smoothly apply for another model, one, two or metal backed layered structures.

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Magnetics, IEEE Transactions on  (Volume:23 ,  Issue: 5 )