Device including ferrimagnetic coupling element

Details Device including ferrimagnetic coupling element Device including ferrimagnetic coupling element

1974-12-09

1976-01-25

Gensler, Paul L.

Wave transmission lines and networks

Wave mode converters

333 84M, H01P 116, H01P 500, H01P 508

Patent

active

040053750

ABSTRACT:
A radio frequency coupling device has a non-magnetic, dielectric substrate having a planar surface on which a ferrimagnetic disc-shaped film is epitaxially grown. Sections of surface-oriented transmission line such as coplanar waveguide or slot-line extend over the substrate surface and terminate over the disc. The ferrimagnetic material couples to the RF magnetic fields associated with the transmission line sections and provides a coupling therebetween which is tunable by adjusting a direct magnetic field applied to the disc. Low direct coupling between the sections is obtained by arranging their respective RF magnetic fields to be orthogonal at the disc.

REFERENCES:
patent: 3560893 (1971-02-01), Wen
patent: 3594664 (1971-07-01), Lipetz
patent: 3678395 (1972-07-01), Hunton et al.

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