Design and Analysis of a WLAN CMOS Power Amplifier Using Multiple-Gated Transistor Technique

摘要

This article focused on 5.2 GHz highly integrated power amplifier for IEEE 802.11a WLAN application. Multiple-gated transistor technique was used to improve linearity. A new approach for choosing the bias voltage of auxiliary transistor by analyzing the shift of gate bias is used in the design. The simulated results of the proposed two-stage differential power amplifier indicate 25.28 dBm P_(1-dB), 32.87% PAE, and 26.18 dBm saturated output power with a 5.2 dB P_(1-dB) improvement compared to conventional single transistor amplifier.