Title :
Autocorrelation analysis of distortion generated from bandpass nonlinear circuits
Author :
Gard, Kevin ; Larson, Lawrence E. ; Steer, Michael B.
Author_Institution :
QUALCOMM CDMA Technol. Inc., San Diego, CA, USA
Abstract :
Estimation of spectral regrowth generated by a digitally modulated carrier passed through a nonlinear RF circuit is analyzed using a formulation of the output autocorrelation function. The estimation is based on developing an analytical expression for the output power spectrum when the nonlinearity is modeled a complex power series model extracted from measured amplitude-to-amplitude (AM-AM) and amplitude-to-phase (AM-PM) characteristics. Comparisons are presented of measured versus predicted ACPR values for a CDMA amplifier
Keywords :
amplitude modulation; cellular radio; code division multiple access; correlation methods; digital radio; nonlinear distortion; nonlinear network analysis; ACPR values; CDMA amplifier; amplitude-to-amplitude characteristics; amplitude-to-phase characteristics; autocorrelation analysis; bandpass nonlinear circuits; complex power series model; digitally modulated carrier; nonlinear RF circuit; output power spectrum; spectral regrowth; Amplitude estimation; Autocorrelation; Circuit analysis; Digital modulation; Multiaccess communication; Nonlinear distortion; Power amplifiers; Power generation; Power measurement; Radio frequency;
Conference_Titel :
Custom Integrated Circuits, 2001, IEEE Conference on.
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-6591-7
DOI :
10.1109/CICC.2001.929798
