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Analysis of Power Amplifier Phase Distortion Characteristics for IEEE 802.11a OFDM Wireless LAM Using Phase Predistortion  

Oh Chung Gyun (Dept. of Electronics Engineering, University of Incheon)
Choi Jae Hong (Dept. of Electronics Engineering, University of Incheon)
Koo Kyung Heon (Dept. of Electronics Engineering, University of Incheon)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.42, no.2, 2005 , pp. 75-80 More about this Journal
Abstract
In this paper, 2-stage power amplifier has been designed for 5.8GHz wireless LAN application. The power amplifier PldB output power has 21.6dBm at 5.8GHz frequency. Also the power amplifier shows 17.6dB gain and -17.8dB input return loss at 5.725GHz to 5.825GHz. The OFDM modulation and transmission block have been modeled in order to analyse the relationship between the power amplifier distortion and output ACPR for the IEEE 802.11a wireless LAN. The nonlinear characteristic of the power amplifier has been modeled as AM-to-AM and AM-to-PM using the behavioral model, and the output spectrum is analysed with the phase distortion variation. Also, amplifier back-off value from PldB to satisfy the required IEEE 802.11a standard spectrum mask has been simulated with phase distortion, and the simulation data have been compared to the measurement result collected by using the pre-distortion technique.
Keywords
frequency regrowth; OFDM; back-off; distortion; ACPR;
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  • Reference
1 J. Vuolevi and T. Rahonen, 'Distortion in RF Power Amplifiers', Arteeh House Inc., Norwood, MA,2003
2 R.. Minasian, 'lntermodulation Distortion Analysis of MESFET Amplifier Using Volterra Series Representation ,' IEEE Trans. Microwave Theory Tech., vol.28, pp.1-8, Jan.1980   DOI
3 J. Sevic, K. Burger and M. Steer, 'A Novel Envelope Termination LoadPull Method for ACPR Optimization of RF/Microwave Power Amplifiers,' IEEE MTT-S Int. Microwave Symp. Dig., pp.723-726, 1998   DOI
4 Wireless Lan Medium Acces Control (MAC) and Physical Layer (PHY) Specifications, IEEE Computer Society,July 1996
5 M. Nishida, S. Murai, H. Uda, H. Tominiga, T. Sawai and A Ibaraki, 'A High Efficiency GaAs Power Amplifier Module with a Single Voltage for Digital Cellular Phone Systems,' IEEE MTT-S Int. Microwave Symp. Dig., pp.743-746, 1997   DOI
6 J.S. Park, S.R. Park, H.J. Roh and K.H.Koo, 'Power Amplifier Back-off Analysis with M-to PM for Millimeter-Wave OFDM Wireless LAN,' Proc. Of RAWCON2001, pp.189-192, 2001   DOI
7 S. Chen, W. Panton and R. Gilmore, 'Effects of Nonlinear Distortion on CDMA Communication Systems,' IEEE MTI-S Int. Microwave Symp. Dig., pp.775-778, 1996   DOI
8 J. Sevic and J. Staudinger, 'Simulation of Power Amplifier Adjacent Channel Power Ratio for Digital Wireless Communication Systems,' IEEE MTI-S Int. Microwave Symp. Dig., pp.681-684, 1996   DOI
9 H. Gutierrez, K. Grad and M. Steer, 'Spectral Regrowth in Microwave Amplifier Using Transformation of Signal Statistics,' IEEE MTI-S Int. Microwave Symp. Dig., pp.985-998, 1999   DOI
10 S. Cripps, RF Power Amplifiers for Wireless Communications, Arteeh House, 1999
11 S. Mass, Nonlinear Microwave Circuitss, Arteeh House, 1998
12 Wireless LAN Medium Access Control(MAC) and Physical Layer specifications, IEEE Std. 802.11a/b/g, 1999/1999/2003