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Current techniques for enhancing the efficiency of ultra linear power amplifiers

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1 Author(s)
R. L. Abrahams ; Div. of Government Commun. Syst., Harris Corp., FL, USA

This paper established a performance baseline for the relatively inefficient class A power amplifier most commonly used today in linear applications and then discusses possible performance enhancements derived from more sophisticated techniques, such as: class B amplifiers, Dougherty PA's, feed forward amplifiers, digital baseband pre-distortion, LINC (linear amplification using nonlinear components), envelope elimination and restoration (EER), and practical combinations of all these techniques. The design providing requisite broadband performance is emphasized.

Published in:

The 2005 IEEE Annual Conference Wireless and Micrwave Technology, 2005.

Date of Conference: