Abstract

This paper describes the design and realization of a high performance linear power amplifier in the 2.4GHz band for the IEEE 802.11b/g WLAN (Wireless Local Area Network) and ISM (Industrial Scientific and Medical) applications using a proprietary 0.5um enhancement-mode Pseudomorphic High-Electron-Mobility Transistor (e-pHEMT) technology. The amplifier exhibits a linear power output of 18.5dBm at 5%Error Vector magnitude (EVM) and efficiency of 30% at 2.45GHz at 3.3V supply in a chip-on-board (COB) module. The design also includes an integrated power detector.