Research on high linear power amplifier in GSM-R
Xiaojin Zhang · Railway Computer Application · 2011
This paper analyzed the influence of the nonlinear distortion towards the GSM-R,described the nonlinear index of the RF power amplifiers,made software simulation on the composition of the feed-forward RF power amplifier and Feed-forward System,implemented the feedforward power amplifier of the 932 MHz center frequency,4 MHz bandwidth and 20W output power,provided a practical and effective approach of improving RF power amplifier's linearity in GSM-R.