Integratable microwave devices based on ferromagnetic films disp

Details Integratable microwave devices based on ferromagnetic films disp Integratable microwave devices based on ferromagnetic films disp

1988-06-30

1989-08-01

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Wave filters including long line elements

333205, 3332192, 333235, 333246, 333262, H01P 1203, H01P 111, H01P 708

Patent

active

048536601

ABSTRACT:
Integratable microwave devices such as a tuneable band reject filter or an r.f. switch are provided on a gallium arsenide substrate having a (100) orientation. Each of the devices includes a layer of a ferromagnetic material having a pair of easy axes which lie in the plane of said (100) orientated substrate and a layer of a conductive, nonmagnetic material disposed thereover. The ferromagnetic material has a ferromagnetic resonant frequency related to the applied DC magnetic field, the anisotropy field, the saturation magnetization, and gyromagnetic ratio. Such devices are provided by utilizing the ferromagnetic resonant properties of the ferromagnetic material disposed on the (100) substrate.

REFERENCES:
patent: 3257629 (1966-06-01), Kornreich
patent: 3399361 (1968-08-01), Belson
patent: 3458837 (1969-07-01), Ngo

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