Title :
A Cryogenically Cooled Two-Channel Paramp Radiometer for 47 GHz
fDate :
4/1/1977 12:00:00 AM
Abstract :
A field operational radiometer for 47 GHz with 18 K cooled degenerate paramps is described which has parallel channels for two ortholinear or circular polarizations. It exhibits an instantaneous RF bandwidth of 300 MHz and a tuning range up to 2 GHz. Its double-sideband system noise temperature of 100 K at midband and its minimum rms noise fluctuation of 0.16 K are several times lower than those of existing millimeter wave receivers.
Keywords :
Bandwidth; Circuits; Fluctuations; Microwave radiometry; Millimeter wave radar; Polarization; Radio frequency; Receivers; Schottky diodes; Temperature;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.1977.1129091
