Dielectric-loaded waveguide circulator for cryogenically cooled

Details Dielectric-loaded waveguide circulator for cryogenically cooled Dielectric-loaded waveguide circulator for cryogenically cooled

1978-02-09

1980-02-05

Moskowitz, Nelson

Amplifiers

Parametric amplifiers

Semiconductor type

331 94, 333 24R, H01S 100

Patent

active

041874706

ABSTRACT:
A dielectrically loaded four-port waveguide circulator is used with a reflected-wave maser connected to a second port between first and third ports to form one of a plurality of cascaded maser waveguide structures. The fourth port is connected to a waveguide loaded with microwave energy absorbing material. The third (output signal) port of one maser waveguide structure is connected by a waveguide loaded with dielectric material to the first (input) port of an adjacent maser waveguide structure, and the second port is connected to a reflected-wave maser by a matching transformer which passes the signal to be amplified into and out of the reflected-wavemaser and blocks pumping energy in the reflected-wave maser from entering the circulator. A number of cascaded maser waveguide structures may thus be housed in a relatively small volume of conductive material placed within a cryogenically cooled magnet assembly.

REFERENCES:
patent: 3002156 (1961-09-01), Boyle et al.
patent: 3064201 (1962-11-01), Damon
patent: 3117282 (1964-01-01), Wessel
patent: 3316506 (1967-04-01), Whicker et al.
patent: 3626335 (1971-12-01), Hord et al.
patent: 3761843 (1972-05-01), Cappucci
patent: 3810037 (1974-05-01), Nakajima
patent: 3978417 (1976-08-01), Clauss
Arams et al., "Packaged Tunable L-Bond Maser System," 5/60, pp. 866-874 Proceeding of the IRE.

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