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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/16506
Title: Load-pull assisted cad design of inverted Doherty Amplifier without quarter-wave transformer
Authors: Rawat, Karun
Ghannouchi F.
Published in: Proceedings of 2012 25th IEEE Canadian Conference on Electrical and Computer Engineering: Vision for a Greener Future, CCECE 2012
Abstract: This paper presents novel design and architecture for inverted Doherty Amplifier. The key point is the removal of the 50 O quarter-wave transformer from peaking path used for impedance inversion in a load modulation circuit of a typical inverted Doherty Amplifier. A coupled line is used as all-pass section providing the desired phase offset to achieve high efficiency performance at back-off. This coupled line thus designed as an all-pass filter section with shaped phase characteristic and a 50 Ω image impedance that can be used directly to optimize the inverted Doherty performance. A prototype has been designed to operate at 2350 MHz for Long term evolution (LTE) application. An improvement of more than 25% in the drain efficiency as compared to the Class-B balanced amplifier at approximately 6-dB back-off is reported with this design. © 2012 IEEE.
Citation: Proceedings of 2012 25th IEEE Canadian Conference on Electrical and Computer Engineering: Vision for a Greener Future, CCECE 2012, (2012). Montreal, QC
URI: https://doi.org/10.1109/CCECE.2012.6334931
http://repository.iitr.ac.in/handle/123456789/16506
Issue Date: 2012
Keywords: all pass section
Inverted Doherty power amplifier
phase offset
ISBN: 9.78E+12
Author Scopus IDs: 57000644800
7006217592
Author Affiliations: Rawat, K., Department of Electrical and Computer Engineering, University of Calgary, AB T2N1N4, Canada
Ghannouchi, F., Department of Electrical and Computer Engineering, University of Calgary, AB T2N1N4, Canada
Corresponding Author: Rawat, K.; Department of Electrical and Computer Engineering, University of Calgary, AB T2N1N4, Canada
Appears in Collections:Conference Publications [ECE]

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