DocumentCode :
3190891
Title :
A 32-GHz reflected-wave maser amplifier with wide instantaneous bandwidth
Author :
Shell, J. ; Neff, D.
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
fYear :
1988
fDate :
25-27 May 1988
Firstpage :
789
Abstract :
An eight-stage 32-GHz reflected-wave ruby maser is described. The maser operates in a 3-W closed-cycle refrigerator (CCR) at 4.5 K and is capable of a 21-dB net gain with an instantaneous bandwidth of 400 MHz. The input noise temperature referred to the room-temperature flange is approximately 21 K. Although this maser is tunable from approximately 29 to 34 GHz, because of the large pump power requirements it is operated with fixed tuned IMPATT oscillators, effectively making this a fixed-frequency amplifier.<>
Keywords :
masers; 21 K; 21 dB; 3 W; 3-W closed-cycle refrigerator; 32 GHz; 32-GHz reflected-wave maser amplifier; 4.5 K; 400 MHz; Al/sub 2/O/sub 3/:Cr laser; CCR; EHF; MM-waves; fixed tuned IMPATT oscillators; input noise temperature; ruby maser; tunable; wide instantaneous bandwidth; Bandwidth; Circulators; K-band; Magnetic fields; Magnetic noise; Magnetic separation; Masers; Superconducting device noise; Superconducting magnets; Waveguide junctions;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Microwave Symposium Digest, 1988., IEEE MTT-S International
Conference_Location :
New York, NY, USA
Type :
conf
DOI :
10.1109/MWSYM.1988.22150
Filename :
22150
Link To Document :
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