Title :
AM-AM and AM-PM measurement of baseband to RF integrated circuits for ACPR calculations
Author :
Gard, Kevin ; Larson, Lawrence E. ; Steer, Michael B.
Author_Institution :
QUALCOMM CDMA Technol. Inc., San Diego, CA, USA
Abstract :
A method to measure AM-AM and AM-PM characteristics of integrated circuits that operate with baseband inputs and RF outputs is presented. The technique requires control of the baseband input signal, three signal generators, and a vector voltage meter to make the measurement. ACPR calculated from the nonlinear transfer characteristic of two CDMA transmitter RFICs are compared with measured ACPR performance.
Keywords :
amplitude modulation; cellular radio; code division multiple access; gain measurement; phase measurement; phase modulation; radio transmitters; radiofrequency integrated circuits; signal generators; CDMA transmitter RFIC; RF integrated circuits; adjacent channel power radiation rejection; baseband AM-AM measurement; baseband AM-PM measurement; baseband input signal; code division multiple access transmitter; signal generators; vector voltage meter; Baseband; Gain measurement; Integrated circuit measurements; Local oscillators; Multiaccess communication; RF signals; Radio frequency; Radiofrequency integrated circuits; Signal generators; Transmitters;
Conference_Titel :
Radio and Wireless Conference, 2003. RAWCON '03. Proceedings
Print_ISBN :
0-7803-7829-6
DOI :
10.1109/RAWCON.2003.1227945
