Amplifiers – With amplifier bypass means
Patent
1987-06-08
1988-11-01
Wan, Gene
Amplifiers
With amplifier bypass means
330286, H03F 100, H03F 360
Patent
active
047823070
ABSTRACT:
A feed-forward microwave amplifier arrangement is disclosed havaing an error-detecting loop including a main amplifier branch and a phase-shift branch, as well as an error-canceling loop including an auxiliary amplifier branch and a phase-shift branch. A temperature compensating arrangement including a ferrite slab centrally mounted in a stepped rectangular waveguide is provided in the phase-shift branch of the error-canceling loop. The temperature compensating arrangement has a phase versus temperature characteristic similar to that of the auxiliary amplifier. An additional ferrite temperature compensating arrangement, having a phase versus temperature characteristic similar to that of the main amplifier, may be provided in the phase-shift branch of the error-detecting loop.
REFERENCES:
patent: 2592716 (1952-04-01), Lewis
patent: 3471798 (1969-10-01), Seidel
patent: 3649927 (1972-03-01), Seidel
patent: 3886470 (1975-05-01), O'Neil et al.
P. D. Lubell, "Linearizing Amplifiers for Multi-Signal Use", Microwaves, Apr. 1974, pp. 46-50.
F. Reggia et al., "A New Technique in Ferrite Phase Shifting for Beam Scanning of Microwave Antennas", Proceedings of the IRE, Nov. 1957, pp. 1510-1517.
Coble Paul M.
Gudmestad Terje
Hughes Aircraft Company
Karambelas A. W.
Wan Gene
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