Magnetostatic wave band-pass-filter

Details Magnetostatic wave band-pass-filter Magnetostatic wave band-pass-filter

1989-07-05

1991-01-08

LaRoche, Eugene R.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

3332192, 333204, H01P 1217

Patent

active

049839373

ABSTRACT:
A magnetostatic wave band-pass-filter is disclosed which uses a planar structure, it has, a single crystal thin film formed on a single crystal gadolinium gallium garnet substrate and mainly containing yttrium iron garnet. In this band-pass-filter, input and output electrodes each made up of finger electrodes and pad electrodes are formed on the substrate or thin film, a high-frequency signal is applied to the input electrode, to excite a magnetostatic wave in the thin film, the magnetostatic wave is reflected from parallel straight edges of the thin film, to generate resonance, and a high-frequency current excited by the magnetostatic wave is taken out by the output electrode.

REFERENCES:
patent: 4743874 (1988-05-01), Kinoshita et al.
patent: 4751480 (1988-06-01), Kunz et al.
patent: 4777462 (1988-10-01), Kunz et al.
patent: 4782312 (1988-11-01), Chang et al.
Chang et al. "The Effect of Width Modes on the Performance of MSSW Resonators", 1984 Ultrasonic Symposium, pp. 164-167.
Castera et al., "Magnetostatic Surface Wave Oscillators and Resonators", Proceedings of the 8th European Microwave Conf. pp. 658-662, Sep. 1978.

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