1. A Dual-Mode CMOS RF Power Amplifier With Integrated Tunable Matching Network.
- Author
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Yoon, Youngchang, Kim, Jihwan, Kim, Hyungwook, An, Kyu Hwan, Lee, Ockgoo, Lee, Chang-Ho, and Kenney, James Stevenson
- Subjects
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COMPLEMENTARY metal oxide semiconductors , *POWER amplifiers , *IMPEDANCE matching , *RADIO frequency , *SWITCHING theory , *GATE array circuits , *CAPACITORS , *DIRECT currents - Abstract
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-\mum 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. [ABSTRACT FROM PUBLISHER]
- Published
- 2012
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