YIG thin film microwave apparatus

Details YIG thin film microwave apparatus YIG thin film microwave apparatus

1986-07-09

1988-05-24

Nussbaum, Marvin L.

Wave transmission lines and networks

Resonators

Temperature compensated

333202, 333235, 333245, H01P 700, H01P 708

Patent

active

047468840

ABSTRACT:
Disclosed is a YIG thin film device utilizing ferrimagnetic resonance effect, a magnetic circuit having a gap of length lg where the YIG thin film device being provided and applying a bias magnetic field perpendicular to a film surface of the YIG thin film device, the magnetic circuit including a permanent magnet having a thickness lm and a soft magnetic plate having a thickness lx, the permanent magnet satisfying the characteristics ##EQU1## the soft magnetic plate satisfying the characteristics ##EQU2## wherein fo is resonance frequency of the YIG thin film device,

REFERENCES:
patent: 4096461 (1978-06-01), Roschmann
patent: 4516096 (1985-05-01), Doyen

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