Nonreciprocal microwave device for surface waves and an isolator

Details Nonreciprocal microwave device for surface waves and an isolator Nonreciprocal microwave device for surface waves and an isolator

1985-12-24

1987-10-06

Gensler, Paul

Wave transmission lines and networks

Coupling networks

Nonreciprocal gyromagnetic type

333246, H01P 137

Patent

active

046986049

ABSTRACT:
A nonreciprocal microwave device for surface electromagnetic waves (SEW waves) as applicable to isolators which provide high isolation comprises a flat metallic core, part of which is placed between two plates of gyromagnetic material and part of which is placed between two absorption loads. Parasitic volume waves are generated by resonance but resonance of waves of higher modes is prevented by forming in the core at least one zone for strong coupling with the SEW waves which propagate in the direction opposite to the low-loss direction at the edge of the core opposite to the edge at which the SEW wave propagates in the forward direction.

REFERENCES:
patent: 3617951 (1971-11-01), Anderson
patent: 3886502 (1975-05-01), Radding et al.
patent: 4050038 (1977-09-01), Noguchi et al.
patent: 4152677 (1979-05-01), Chiron et al.

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