YIG thin film microwave apparatus

Details YIG thin film microwave apparatus YIG thin film microwave apparatus

1986-07-09

1988-05-17

Nussbaum, Marvin L.

Wave transmission lines and networks

Resonators

Temperature compensated

333202, 333219, 333235, H01P 700

Patent

active

047453800

ABSTRACT:
A YIG film microwave device utilizing the ferrimagnetic resonance of a YIG film, comprising a YIG film microwave element formed by a liquid phase epitaxial growth process and a photolithographic process, and a magnetic circuit including permanent magnets for applying a DC magnetic field to the YIG film microwave element. Some of the Fe.sup.3+ ions of the YIG film are substituted by nonmagnetic ions to provide the YIG film microwave device with satisfactory temperature characteristics. The YIG film microwave device is capable of operating stably over the wide range of working frequency and that of temperature.

REFERENCES:
patent: 3713210 (1973-01-01), Schellenberg
patent: 4614923 (1986-09-01), Roveda et al.

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