Title :
Time-domain characterization using LSNA of a broad band cross modulation in CDMA communication systems
Author :
Chahine, M. Abou ; Saleh, A. ; Rousset, D. ; Neveux, G. ; Barataud, D. ; Nebus, J.M.
Author_Institution :
XLIM, Univ. of Limoges, Limoges, France
Abstract :
This paper presents a four channel time-domain measurement system for the characterization of nonlinear microwave devices. This characterization system based on the use of a LSNA (Large Signal Network Analyzer) is fully calibrated. It allows the time domain waveforms characterization of non linear devices driven by broadband modulated signals. We perform the measurement of a cross modulation for a FREESCALE PW6IC1940-50W amplifier used in CDMA communication systems at a frequency of 1.94 GHz. Variations of amplitude and phase modulation indices versus input power are recorded and discussed.
Keywords :
code division multiple access; microwave circuits; network analysers; time-domain analysis; CDMA communication systems; LSNA; broad band cross modulation; channel time-domain measurement system; high power amplifiers; large signal network analyzer; nonlinear microwave circuits; nonlinear microwave devices; time-domain characterization; Broadband amplifiers; Frequency; Microwave devices; Microwave measurements; Multiaccess communication; Performance evaluation; Signal analysis; Signal generators; Time domain analysis; Time measurement; Cross modulation (CM); Nonlinear microwave circuits; Time-domain measurements; high power amplifiers;
Conference_Titel :
Advances in Computational Tools for Engineering Applications, 2009. ACTEA '09. International Conference on
Conference_Location :
Zouk Mosbeh
Print_ISBN :
978-1-4244-3833-4
Electronic_ISBN :
978-1-4244-3834-1
DOI :
10.1109/ACTEA.2009.5227935
