0.2 cc HBT power amplifier module with 40% power-added efficiency for 1.95 GHz wide-band CDMA cellular phones

This paper is the first to report a high efficiency 0.2 cc power amplifier module for Wide-band CDMA (W-CDMA) cellular phones. The module achieves power-added efficiency (PAE) of 40% and adjacent channel leakage power (ACP) of -40.8 dBc at an output power level of 28 dBm with 4.096 MHz QPSK modulation.