Unidirectional phase shifter

Details Unidirectional phase shifter Unidirectional phase shifter

1978-06-16

1980-05-06

Gensler, Paul L.

Wave transmission lines and networks

Coupling networks

Nonreciprocal gyromagnetic type

333 21A, H01P 140

Patent

active

042019613

ABSTRACT:
A unidirectional phase shifter provides selectable phase changes for linearly polarized microwaves of electromagnetic radiation entering the phase shifter in one direction and constant insertion phase for linearly polarized microwaves entering the phase shifter in the opposite direction. The phase shifter consists of two ferrite phasor sections arranged such that the phase changes of the two sections add for one direction of signal flow and cancel for the other. Each phasor section includes a ferrite half-wave plate, at one end of which is coupled a ferrite quarter-wave plate, and at the other end of which is coupled a dielectric quarter-wave plate. The dielectric quarter-wave plate of one of the phasor sections is coupled to the ferrite quarter-wave plate of the other phasor section.

REFERENCES:
patent: 2438119 (1948-03-01), Fox
patent: 2787765 (1957-04-01), Fox
patent: 2858512 (1958-10-01), Barnett
patent: 3626335 (1971-12-01), Hord et al.
patent: 3698008 (1972-10-01), Roberts et al.
patent: 3845421 (1974-10-01), Charlton et al.
patent: 3982213 (1976-09-01), Smith et al.

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