A Dual-Mode CMOS RF Power Amplifier With Integrated Tunable Matching Network

作者：Yoon Youngchang^*; Kim Jihwan; Kim Hyungwook; An Kyu Hwan; Lee Ockgoo; Lee Chang Ho; Kenney James Stevenson

来源：IEEE Transactions on Microwave Theory and Techniques, 2012, 60(1): 77-88.

DOI：10.1109/TMTT.2011.2175235

• CMOS
• RF power amplifiers (PAs)
• switched capacitor
• tunable amplifiers
• tunable matching network

A dual-mode CMOS power amplifier (PA) with an integrated tunable matching network is presented. A switched capacitor is fully analyzed to implement a tunable matching network in terms of power-handling capability, tuning ratio, quality factor, and linearity. Based on the presented consideration, a 3.3-V 2.4-GHz fully integrated CMOS dual-mode PA is implemented in a 0.18-mu m CMOS process. The PA has two power modes, high-power and low-power (LP), and each mode is optimally matched by the tunable matching network. The LP mode enables more than 50% dc current reduction from 0- to 10-dBm power range. The improved efficiency in this study is approximately twice that of other multimode CMOS PAs reported thus far.

• 出版日期2012-1