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http://dx.doi.org/10.5573/ieie.2014.51.4.059

CMOS Power Amplifier Using Mode Changeable Autotransformer  

Ryu, Hyunsik (Pusan National University)
Nam, Ilku (Pusan National University)
Lee, Dong-Ho (Hanbat National University)
Lee, Ockgoo (Pusan National University)
Publication Information
Journal of the Institute of Electronics and Information Engineers / v.51, no.4, 2014 , pp. 59-65 More about this Journal
Abstract
In this paper, in order to improve efficiency performance of power amplifiers, a mode changeable autotransformer is proposed. Efficiency performance at the low-power mode can be improved by adopting the mode changeable autotransformer. A dual-mode autotransfomrer CMOS power amplifier using a standard 0.18-${\mu}m$ CMOS process is designed in this work. Number of turns in a primary winding is re-configurated according to mode change between the high-power mode and the low-power mode. Thus, the efficiency performance of the power amplifier at each mode is optimized. EM and total circuit simulation results verify that low-power mode power added efficiency(PAE) at 24dBm output power is improved from 10.4% to 26.1% using the proposed multi-mode operation.
Keywords
Power amplifiers; low-power mode; autotransformer; passive efficiency; high-power mode;
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1 Hyoungjun Kim, Jinhee Joo, and Chulhun Seo,"Research on PAE of CMOS Class-E Power Amplifier For Multiple Antenna System", IEIE vol 45, no 1, pp 1-6, Dec. 2008.
2 A. M. Niknejad, D. Chowdhury, and J. Chen, "Design of CMOS power amplifiers", IEEE Trans. Microw. Theory Tech., vol. 60, no. 6, pp. 1784-1796, June 2012.   DOI   ScienceOn
3 S. Kim, J. Lee, J. Shin, and B. Kim, "CDMS handset power amplifier with a switched output matching circuit for low/high power mode operations", in IEEE MTT-S Int. Microw. Symp. Dig., pp. 1523-1526, June 2004.
4 J.-S. Fu and A. Mortazawi, "Improved power amplifier efficiency and linearity using a dynamically controlled tunable matching network", IEEE Trans. Microw. Theory Tech., vol. 56, no. 12, pp. 3239-3244, Sep. 2008.   DOI   ScienceOn
5 O. Lee, K. H. An, J. Cho, and J. Cha "A switchless reconfigurable transformer CMOS power amplifier", IEICE Electronics Express, vol. 9, no. 9, pp. 855-860, May 2012   DOI   ScienceOn
6 C. Alexander and M. Sadiku, Fundamentals of Electric Circuits, McGraw-Hill, 2009, ch. 13.
7 V. A. Solomko and P. Weger, "A fully integrated 3.3-3.8-GHz power amplifier with autotranformer balun", IEEE Trans. Microw. Theory Tech., vol. 57, no. 9, pp. 2160-2172, Sep. 2009.   DOI   ScienceOn
8 H.-Y. Liao, M.-W. Pan, and H.-K. Chiou, "Fully-integrated CMOS class-E power amplifier using broadband and low-loss 1:4 transmissionline transformer", Electronics Letters, vol. 46, no. 22, Oct. 2010.
9 B. Koo, T. Joo, Y. Na, and S. Hong,"A fully integrated dual-mode CMOS power amplifier for WCDMA applications", IEEE J. Solid-State Circuits, pp 82 - 84, Feb. 2012.
10 K. H. An, D. H. Lee, O. Lee, H. Kim, J. Han, W. Kim, C.-H. Lee, H. Kim, and J. Laskar, "A 2.4GHz fully integrated linear CMOS power amplifier with discrete power control", IEEE Microw. Wireless Compon. Lett., vol. 19, no. 7, pp. 479-481, July 2009.   DOI   ScienceOn
11 G. Liu, P. Haldi, T.-J. K. Liu, and A. M. Niknejad, "Fully integrated CMOS power amplifier with efficiency enhancement at power backoff", IEEE J. Solid-State Circuits, vol. 43, no. 3, pp. 600-609, Mar. 2008.   DOI   ScienceOn