Microwave circulator with a planar, biasing, permanent magnet

Details Microwave circulator with a planar, biasing, permanent magnet Microwave circulator with a planar, biasing, permanent magnet

1993-04-19

1995-01-03

Gregory, Bernarr E.

Wave transmission lines and networks

Plural channel systems

Nonreciprocal gyromagnetic type

H01P 132

Patent

active

H00014087

ABSTRACT:
A microstrip circuit having a plurality of coplanar microstrips mounted on a common dielectric substrate. A planar circulator is coupled to a junction of the microstrips. The circulator includes a ferrite disc which lies in the plane of the substrate. The circulator also includes a biasing permanent magnet in the form of a planar, toroidal-shaped magnet having magnetic sections that are embedded in the dielectric substrate. The magnetic sections from a split cylinder that encircles the ferrite material while permitting the microstrips to pass therethrough.

REFERENCES:
patent: 3085212 (1963-04-01), Clark et al.
patent: 3101456 (1963-08-01), Brown, Jr. et al.
patent: 3456213 (1969-07-01), Hershenov
patent: 3710280 (1973-01-01), Buck
R. A. Stern and R. W. Babbitt, "Millimeter-Wave Microstrip `Drop-In` Circtors" Microwave Journal, Apr. 1989, pp. 137-139.

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