Title :
Calibrated measurements of nonlinearities in narrowband amplifiers applied to intermodulation and cross modulation compensation
Author :
van den Broeck, T.
Author_Institution :
Vrije Univ., Brussels, Belgium
Abstract :
A vectorial nonlinear-network analyzer (VNNA) is absolutely calibrated in amplitude and phase for narrowband measurements of nonlinearities. Calibration is performed with a reference generator, characterized with a calibrated sampling oscilloscope. The reference signal, consisting of an upconverted baseband signal, is optimized for statistically efficient measurements. Using the calibrated VNNA, narrowband amplifiers can be measured, enabling compensation of intermodulation and cross-modulation.<>
Keywords :
amplifiers; calibration; circuit testing; compensation; intermodulation; network analysers; calibrated VNA; calibrated measurements; calibrated sampling oscilloscope; cross modulation compensation; intermodulation compensation; narrowband amplifiers; nonlinearities; reference generator; statistically efficient measurements; upconverted baseband reference signal; vectorial nonlinear network analyzer; Calibration; Character generation; Chromium; Distortion measurement; Narrowband; Oscilloscopes; Phase measurement; Sampling methods; Signal generators; System testing;
Conference_Titel :
Microwave Symposium Digest, 1995., IEEE MTT-S International
Conference_Location :
Orlando, FL, USA
Print_ISBN :
0-7803-2581-8
DOI :
10.1109/MWSYM.1995.406171
