Title :
Nonlinearity characterisation of microwave detectors for radiometer applications
Author_Institution :
RF Syst. Div., Eur. Space Res. & Technol. Centre, Noordwijk, Netherlands
fDate :
2/1/1996 12:00:00 AM
Abstract :
The accuracy of microwave radiometers is affected by the deviation of the detector from the ideal square-law behaviour. A method is presented for determining the error caused by higher order nonlinearities, based on the experimental characterisation of the nonlinearities with a two-tone test. In actual operation with Gaussian noise as the input signal, the error caused by higher order nonlinearities is found to be greater than that with sinusoidal input signal
Keywords :
error analysis; measurement errors; microwave detectors; radiometers; Gaussian noise input signal; experimental characterisation; higher order nonlinearities; ideal square-law behaviour deviation; microwave detectors; microwave radiometers; nonlinearity characterisation; radiometer applications; two-tone test;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19960109
