Title :
Modeling power amplifiers with antenna mismatch
Author :
Nielsen, Troels S. ; Lindfors, Saska ; Tawfik, Shadi ; Larsen, Torben
Author_Institution :
Center for TeleInFrastructure, Aalborg Univ., Denmark
Abstract :
The paper presents an approach for behavioral level power amplifier modeling with antenna mismatch. The derived model is based on device large signal S-parameter measurements of a commercially available W-CDMA power amplifier. The measurement setup is described in detail and the model validity is verified by comparing measured and simulated adjacent channel power ratios (ACPR). The measured and simulated ACPR show very good agreement and match at the nominal drive level to within 2 dB over the maximum output VSWR ratings.
Keywords :
S-parameters; impedance matching; power amplifiers; radio transmitters; VSWR ratings; W-CDMA power amplifier; adjacent channel power ratios; antenna mismatch; large signal S-parameter measurements; load impedance; matching network; power amplifier modeling; wireless transmitters; Antenna measurements; Impedance; Isolators; Linearity; Loaded antennas; Multiaccess communication; Power amplifiers; Power measurement; Radio frequency; Scattering parameters;
Conference_Titel :
Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on
Print_ISBN :
0-7803-8834-8
DOI :
10.1109/ISCAS.2005.1465777
