A fully integrated 4.8-6 GHz Wireless LAN SiGebipolar power amplifier chip requiring no external components was realized using the small die size of only 1x0.9 mm2. At 1V to 2.4V, the maximum out put power level is 19 dBm (22%PAE) to 26.3 dBm(28.5%PAE) at 5.25GHz with a maximum small signal gain of 33 dB. The maximum average out put power for a maximum 3%Error Vector Magnitude (EVM)is 16 dBm.The PA survives a VSWR of 50
