NEW TECHNIQUE FOR MICROWAVE RADIOMETRY,
Abstract
An interference modulation technique for micro wave radiometry is considered for the development of a radiometer for tuning over a wide range of frequencies, a radiometric device for determining the absolute sensitivity of detectors over a wide range of frequencies, and a means for determining the power level of coherent sources as a function of frequency. Such a device does not require the use of a coherent source; the technique is applicable to wavelengths well into the low mm region. A tunable radiometer using interference modulation has been operated as a measurements system within the 50-90 gc region. Successful performance required the use of a sensitive detector which consisted of a barretter operated in an evacuated atmosphere. A noise source having known temperature was used as the source of microwaves for determining the sensitivity of detectors as a function of frequency. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- May 03, 1963
- Accession Number
- AD0410979
Entities
People
- J.c. Butterworth
- M.w. Long
Organizations
- Georgia Tech