Digital gyromagnetic phase shifter

Wave transmission lines and networks – Coupling networks – Nonreciprocal gyromagnetic type

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307101, 307314, 333158, H01P 1195

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active

044450990

ABSTRACT:
The phase shift resolution provided by an N element digital gyromagnetic phase shifter is increased and the number of obtainable phase states is increased by 2.sup.N -1 to 2.sup.N+1 -1 by modification of the control and driver circuitry to selectively set elements to a half-maximum phase shift condition in addition to the known zero phase shift and maximum phase shift conditions.

REFERENCES:
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patent: 3290622 (1966-12-01), Hair
patent: 3316506 (1967-04-01), Whicker et al.
patent: 3425003 (1969-01-01), Mohr
patent: 3471809 (1969-10-01), Parks et al.
patent: 3519956 (1970-07-01), Hai et al.
patent: 3539950 (1970-11-01), Freibergs
patent: 3699584 (1972-10-01), Hrivnak et al.
patent: 3721922 (1973-03-01), Boensel
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patent: 3754274 (1973-08-01), Auger
patent: 3835397 (1974-09-01), D'Antonio
patent: 3851281 (1974-11-01), Hanfling
patent: 3988686 (1976-10-01), Beall et al.
"Microwave Ferrite Devices-1968", Microwave Journal, vol. 11, #4, Apr. 1968 by J. E. Pippin.
"The Partially Latched Twin-Slab Ferrite Phase Shifter in Rectangular Waveguide and Electronic Driving Methods", 1969 European Microwave Conf., London, England, (Sep. 8-12, 1969) by R. B. Bell, J. T. Zakrzewski and D. R. Hodge.
"A Single Bit Latching Reciprocal Ferrite Phase Shifter", Microwaves, pp. 46-50, Mar. 1970, by Joe K. Parks and Robert Ausband.

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