A 240-W dual-band 870 and 2140 MHz envelope tracking GaN PA designed by a probability distribution conscious approach

Summary form only given, as follows. Thw paper presents a 870 and 2140 MHz PA for envelope tracking (ET) operation. The design was based on a multi-section transmission line matching technique and considered the actual probability distribution function of a WCDMA signal. The prototype met similar performance to that of an amplifier based on single-band pulsed load pull, over a bandwidth of 100 MHz; reporting an average drain efficiency of 69.5% and 51.0%, and peak power levels of 54.86 and 53.96 dBm at the design frequencies.