Title :
Novel two-tone intermodulation phase measurement for evaluating amplifier memory effects
Author :
Dunsmore, Joel ; Goldberg, David
Author_Institution :
Agilent Technol., Santa Rosa, CA, USA
Abstract :
The amplitude and phase response of the two-tone intermodulation product, as the tone spacing is swept in frequency, may be used to predict memory-related distortion in power amplifiers. Previously, the methods used to measure the phase response were slow and limited to narrow bandwidths. This new measurement method is extremely fast, proposes a method for normalization or calibration of the phase response, and is extremely broadband, making it suitable for measurements of wide band amplifiers such as those used in satellite communication systems.
Keywords :
UHF power amplifiers; calibration; intermodulation measurement; microwave power amplifiers; phase measurement; satellite communication; wideband amplifiers; RF communications systems; amplifier memory effects; amplitude response; calibration; extremely broadband measurement method; frequency-swept tone spacing; memory-related distortion; microwave communications systems; normalization; phase response; power amplifiers; satellite communication systems; two-tone intermodulation phase measurement; two-tone intermodulation product; wide band amplifiers; Bandwidth; Broadband amplifiers; Calibration; Distortion measurement; Frequency; Intermodulation distortion; Phase distortion; Phase measurement; Power amplifiers; Satellite communication;
Conference_Titel :
Microwave Conference, 2003. 33rd European
Print_ISBN :
1-58053-834-7
DOI :
10.1109/EUMC.2003.1262261
