A Broadband Power Amplifier Applied in GSM/TD-SCDMA/WLAN System

Abstract

A broadband power amplifier operating from 0.8GHz to 2.4GHz is designed in 0.13-µm SiGe HBT process. The power amplifier adopts pseudo-differential structure, adaptive bias control technique, broadband matching network and compensated matching technique to optimize linearity, efficiency and bandwidth. The simulation results show that the maximum power gain is 25 dB, 3-dB bandwidth is 690MHz-2470MHz. P1dB, Psat and PAE are better than 26dBm, 29dBm and 38%, respectively. The chip area of DAC occupies 2.56mm 2 with pads.