Design of 2.4GHz Power Amplifier used in WLAN 802.11b by pHEMT

摘要

This paper introduces the design of a 2.4GHz class AB power amplifier with Win 0.15 μ m InGaAs pHEMT technology by using Agilent ADS software. It consists of two-stage amplifiers. The voltage parallel negative feedback method and small resistors in series with the gates of transistors are used to augment the stability of the circuit. This power amplifier can transmit 28.8dBm output power to a 5011 load at 1dB compression point. The power added efficiency is 30.2% at 1dB compression point and the power gain is 30.2dB.