Compact microstrip latching reciprocal phase shifter

Details Compact microstrip latching reciprocal phase shifter Compact microstrip latching reciprocal phase shifter

1988-12-23

1989-12-12

Gensler, Paul

Wave transmission lines and networks

Coupling networks

Delay lines including long line elements

333162, 333238, H01P 1195

Patent

active

048870544

ABSTRACT:
A latching type of microstrip reciprocal phase shifter is provided having a oroidal-shaped ferrite core with a length of microstrip conductor wound about the outer cylindrical surface of the core and a ground plane mounted on the inner cylindrical surface of the core surrounding the aperture in the core. A single control wire is passed through the aperture in the core and creates a circular magnetic field in the core surrounding the aperture when the core is pulsed with a unidirectional current pulse. By successively pulsing the control wire with current pulses of opposite polarity, the core may be switched back and forth between a first saturated magnetic state in which it exhibits a first insertion phase with respect to millimeter wave energy traveling between the ends of the microstrip conductor disposed on the outer cylindrical surface of the core and a second non-saturated magnetic state in which it exhibits a different insertion phase with respect to such millimeter wave energy traveling along the microstrip conductor on the outer surface of the core.

REFERENCES:
patent: 2721312 (1955-10-01), Greig et al.
patent: 3277401 (1966-10-01), Stern
patent: 3290622 (1966-12-01), Hair
patent: 3418605 (1968-12-01), Hair et al.

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