Title :
Estimation of RF PA nonlinearities after cross-correlating power supply current and output voltage
Author :
Veiga, Ricardo ; Mota, Pedro ; Silva, José Machado da
Author_Institution :
Fac. de Eng., Univ. do Porto, Porto, Portugal
Abstract :
The present paper describes developments carried-out on estimating 1 dB compression and third-order intercept points after the cross-correlation between power supply dynamic current and output voltage of radio-frequency power amplifier. The underlining theory and a circuit that allows implementing this measurement on-chip are presented. Simulation results, including the analysis of optimum stimuli amplitudes and the Monte Carlo analysis to circuits´ process variations are presented. These show that good accuracy can be obtained with relatively simple measurement conditions.
Keywords :
Monte Carlo methods; power amplifiers; radiofrequency amplifiers; Monte Carlo analysis; compression; cross correlation; output voltage; power supply current; radiofrequency power amplifier; third-order intercept points; Analytical models; Circuit analysis; Circuit simulation; Current supplies; Monte Carlo methods; Power amplifiers; Power supplies; Radio frequency; Radiofrequency amplifiers; Voltage;
Conference_Titel :
Mixed-Signals, Sensors, and Systems Test Workshop, 2009. IMS3TW '09. IEEE 15th International
Conference_Location :
Scottsdale, AZ
Print_ISBN :
978-1-4244-4618-6
Electronic_ISBN :
978-1-4244-4617-9
DOI :
10.1109/IMS3TW.2009.5158689
