Wave transmission lines and networks – Coupling networks – Nonreciprocal gyromagnetic type
Patent
1982-09-30
1984-08-21
Gensler, Paul L.
Wave transmission lines and networks
Coupling networks
Nonreciprocal gyromagnetic type
333 21R, 333158, H01P 119
Patent
active
044672926
ABSTRACT:
A millimeter-wave phase shifter for use at high millimeter-wave frequencies is disclosed. The phase shifter employs continuous aperture ferrite and corrugated horns to make a reciprocal phase shifter in the frequency range of interest. Applied linearly polarized energy is expanded in cross-section by means of a first corrugated horn. The expanded energy is focused by a first lens, circularly polarized and applied to a ferrite phase shifting section. The phase shift applied to the energy is controlled by means of phase control circuitry and a yoke and coil arrangement. The phase-shifted energy is then converted to linearly polarized energy by a second circular polarizer focused by a second lens and contracted in cross-section by a corrugated horn. The use of the corrugated horns, polarizers, lenses and ferrite phase shifting components allows a much larger device to be fabricated and hence physical tolerances are reduced by an order of magnitude for the frequency range of interest. In addition, both the efficiency and power handling capability are greatly improved. Both reciprocal and nonreciprocal phase shifters are disclosed.
REFERENCES:
patent: 3736535 (1973-05-01), Mohr et al.
patent: 3760300 (1973-09-01), Leahy
patent: 3772619 (1973-11-01), Clarricoats
Gimonet et al., Optimization and Design of Millimeter Wavelength Phase Shifters, 1979 IEEE MTT-S Int'l. Microwave Symposium Digest, Apr.-May 1979.
Ajioka James S.
Tang Raymond
Gensler Paul L.
Hughes Aircraft Company
Karambelas A. W.
Runk Thomas A.
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