Title :
A simple dual-tone calibration of diode detectors
Author :
Li, Ji ; Bosisio, Renato G. ; Wu, Ke
Author_Institution :
Ecole Polytech. de Montreal, Que., Canada
Abstract :
A new dual-tone method to linearize diode detectors is proposed, in which two closely spaced CW carriers with equal amplitudes are fed into the diode detector to be calibrated. It is found that the output waveform of the detector is a distorted sinusoidal wave of the frequency difference between the two carriers. The deviation from the square-law response can be found from the distorted signal which is attributed to the detector through a simple iterative calculation. Measurement performed at 40 GHz has shown an error within 0.2 dB over a 40 dB dynamic range
Keywords :
calibration; linearisation techniques; microwave detectors; solid-state microwave devices; 40 GHz; 40 dB; closely spaced CW carriers; diode detectors; distorted sinusoidal wave; dual-tone calibration; iterative calculation; linearization; output waveform; square-law response; Calibration; Costs; Diodes; Distortion measurement; Dynamic range; Envelope detectors; Frequency; Microwave sensors; Performance evaluation; Sensor phenomena and characterization;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1994. IMTC/94. Conference Proceedings. 10th Anniversary. Advanced Technologies in I & M., 1994 IEEE
Conference_Location :
Hamamatsu
Print_ISBN :
0-7803-1880-3
DOI :
10.1109/IMTC.1994.352074
