Title :
Nonlinear modeling of tunnel diode detectors
Author :
Walker, D.K. ; Coakley, K.J. ; Splett, J.D.
Author_Institution :
National Inst. of Stand. & Technol.
Abstract :
We investigate the sensitivity and nonlinear properties of a tunnel diode microwave detector as functions of the input power and the load impedance presented at the detector´s output. We estimate the systematic error associated with using a linear calibration model to estimate received power and, hence, brightness temperature from the nonlinear voltage-power transfer function of the detector. One estimate is provided by the two-tone method, the other by an empirical regression spline method
Keywords :
calibration; geophysical techniques; measurement errors; microwave detectors; microwave measurement; radiometry; remote sensing; tunnel diodes; brightness temperature; empirical regression spline method; linear calibration model; load impedance; microwave radiometer; nonlinear modeling; nonlinear voltage-power transfer function; remote sensing; tunnel diode microwave detector; Attenuators; Brightness temperature; Diodes; Envelope detectors; Gas detectors; Impedance; Microwave radiometry; Power measurement; Transfer functions; Voltage;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2004. IGARSS '04. Proceedings. 2004 IEEE International
Conference_Location :
Anchorage, AK
Print_ISBN :
0-7803-8742-2
DOI :
10.1109/IGARSS.2004.1369997
