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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