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Linearizing of Low Noise Power Amplifier Using 5.8GHz Double Loop Feedforward Linearization Technique

Authors: Abdulkareem Mokif Obais; Zainab Mustafa Hussein;

Linearizing of Low Noise Power Amplifier Using 5.8GHz Double Loop Feedforward Linearization Technique

Abstract

In this paper, a double loop feedforward linearization technique is analyzed and built with a MMIC low noise amplifier “HMC753” as main amplifier and a two-stage class-A power amplifier as error amplifier. The system is operated with 5V DC supply at a center frequency of 5.8GHz and a bandwidth of 500MHz. The proposed technique, increases the linearity of the MMIC amplifier from 18dBm at 1dB compression point to more than 26dBm. In addition, the proposed system is tested with OFDM signal and it reveals good response in maximizing the linearity region and eliminating distortions. The proposed system is designed and simulated onAdvanced Wave Research-Microwave Office (AWR-MWO).

Subjects by Vocabulary

Library of Congress Subject Headings: lcsh:Q lcsh:L lcsh:Science lcsh:Education

Keywords

linearization techniques, power amplifier, feedforward

23 references, page 1 of 3

Braithwaite R. N. and Khanifar A. , 2013 "High Efficiency Feedforward Power Amplifier Using a Nonlinear Error Amplifier and Offset Alignment Control". Microwave Symposium Digest (IMS), IEEE MTT-S International, Seattle, WA, USA, 2-7 June, pp. 1-4.

Braithwaite R. N. , 2008 "A Non-Collinear Descent Algorithm for Controlling the First Loop in a Feedforward Power Amplifier". Radio and Wireless Symposium, IEEE, Orlando, FL, USA, 22-24 January, pp. 431-434.

Cho K., Kim J., and Stapleto S. P. , 2005"A highly efficient Doherty feedforward linear power amplifier for W-CDMA base-station applications". IEEE Transactions on Microwave Theory and Techniques, Vol. 51, No. 1, pp. 292- 300.

Cripps S. C., 2006 "RF Power Amplifiers for Wireless Communications," Artech House, Inc., Boston, London, U.K..

Gallaghera K. A., Mazzarob G. J., Narayanan R. M., Sherbondyc K. D., and Martonec A. F. , 2014 "Automated cancellation of harmonics using feed-forward filter reflection for radar transmitter linearization". Proc. of SPIE Vol. 9077.

Gharaibeh K. M. and Al-Zayed A. S., "Performance of Feed-forward Linearizers of Power Amplifiers in OFDM Systems under Complex Gain Errors". International Journal of Communications Systems, Vol. 29, No. 4, pp. 734-747. John Wiley & Sons, Ltd.

Gokceoglu A., ghadam A. S. h., and Valkama M. , 2015 "Steady-State Performance Analysis and Step-Size Selection for LMS-Adaptive Wideband Feedforward Power Amplifier Linearizer". IEEE Transactions on Signal Processing, Vol. 60, No. 1, pp. 82-99, 2012.

Hati A., Nelson C. W., and Howe D. A. , 2006 "Low Phase Noise Amplifier and Oscillator Using Feed-Forward Technique at 10 GHz". International Frequency Control Symposium and Exposition, IEEE, Miami, FL, USA, June, pp. 228- 232.

Haydee M., Muñiz C. S., and Ventura A. V. , 2006 "Feedforward linearization of a power amplifier for wireless communications systems". International Meeting of Electrical Engineering, pp. 164-168.

Hemmatyar A. M. A. and Farzaneh F. , 2007 "Estimation of Practical Intermodulation Rejection Values in a Multi-Loop Feed-forward Microwave Power Amplifier Using Monte-Carlo Method". Telecommunications and Malaysia International Conference on Communications, IEEE International Conference, Penang, Malaysia, 14-17 May, pp. 632-637. [OpenAIRE]

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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