Title :
Relative accuracy of isolated and unisolated noise comparison radiometers
Author_Institution :
Nat. Inst. of Stand. & Technol., Boulder, CO, USA
fDate :
June 27 1994-July 1 1994
Abstract :
A rigorous radiometer equation is derived and used to develop better corrections and uncertainty estimates. Isolated and well corrected unisolated radiometers have similar accuracies for low reflection coefficient sources. To ignore corrections for the finite isolation of a radiometer, about 38 dB isolation is needed.<>
Keywords :
amplifiers; calibration; electric noise measurement; error correction; measurement errors; radiometers; random noise; 38 dB; amplifiers noise; corrections; finite isolation; isolated radiometers; linear radiometer; reflection coefficient sources; unisolated noise comparison radiometers; Acoustic reflection; Coaxial components; Equations; Isolators; Linear systems; NIST; Noise measurement; Radiometers; Switches; Temperature;
Conference_Titel :
Precision Electromagnetic Measurements, 1994. Digest., 1994 Conference on
Conference_Location :
Boulder, CO, USA
Print_ISBN :
0-7803-1984-2
DOI :
10.1109/CPEM.1994.333242
