Multiple supply (class-G) linear modulator and PA for non-CE modulation

A class-G PA consisting of a class-E PA and class-G supply modulator is fabricated in a 130 nm process. It operates from 1.65 and 3.3 V supplies and the die area is 2times2 mm. It achieves a measured Pout of 29.2 dBm with a PAE of 72%. It can amplify signals with peak-to-average ratios of ~3-20 dBm, or act as power control for constant envelope signals. It achieves an EVM value of 4.6%-rms for a root-raised cosine filtered, QPSK modulated signal similar to that specified in the WCDMA standard (Data rate = 3.84 MB/s) and an average efficiency of 45%, compared to 17% for a similar class-B PA.