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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/16503
Title: Design scheme for dual-band three stage doherty power amplifiers
Authors: Barthwal A.
Ajmera G.
Rawat, Karun
Basu A.
Koul S.K.
Published in: Proceedings of IEEE MTT-S International Microwave and RF Conference 2014, IMaRC 2014 - Collocated with Intemational Symposium on Microwaves, ISM 2014
Abstract: This paper presents the analysis and design of dual-band/three stage Doherty Power Amplifier (DPA). The DPA is implemented using three 10-W packaged GaN-HEMT devices from CREE, with the target of high drain efficiency at 6 and 9-dB output power back-off (OPBO), while operating at 1.7 GHz and 2.4 GHz. At 1.7 GHz, the drain efficiency is better than 51% at both 6 and 9 dB OPBO. The corresponding drain efficiency measured at 2.4 GHz is better than 45.5% for both 6 and 9 dB OPBO. The concurrent operation with simultaneous excitation at 1.7 GHz and 2.4 GHz, results into the aggregated efficiency better than 41% upto 9 dB OPBO. The modulated measurement at 1.7 GHz using one carrier WCDMA signal of 7 dB PAPR shows average efficiency of 53.25% However, with the input excitation of 5 MHz WiMax signal of 7 dB PAPR at 2.4 GHz, the average efficiency is about 51% The designed DPA is linearized using digital predistortion with proper mask qualification for both WCDMA and WiMax signals. © 2014 IEEE.
Citation: Proceedings of IEEE MTT-S International Microwave and RF Conference 2014, IMaRC 2014 - Collocated with Intemational Symposium on Microwaves, ISM 2014, (2014), 80- 83
URI: https://doi.org/10.1109/IMaRC.2014.7038975
http://repository.iitr.ac.in/handle/123456789/16503
Issue Date: 2014
Publisher: Institute of Electrical and Electronics Engineers Inc.
Keywords: Doherty
dual-band
N-stage
power amplifiers
ISBN: 9.78E+12
Author Scopus IDs: 57025003000
56323521400
57000644800
56023912300
55849312100
Author Affiliations: Barthwal, A., Centre for Applied Research in Electronics(C.A.R.E.), Indian Institute of Technology, Delhi, India
Ajmera, G., Centre for Applied Research in Electronics(C.A.R.E.), Indian Institute of Technology, Delhi, India
Rawat, K., Centre for Applied Research in Electronics(C.A.R.E.), Indian Institute of Technology, Delhi, India, Bharti School of Telecomm. Technology and Management, Indian Institute of Technology, Delhi, India
Basu, A., Centre for Applied Research in Electronics(C.A.R.E.), Indian Institute of Technology, Delhi, India, Bharti School of Telecomm. Technology and Management, Indian Institute of Technology, Delhi, India
Koul, S.K., Centre for Applied Research in Electronics(C.A.R.E.), Indian Institute of Technology, Delhi, India, Bharti School of Telecomm. Technology and Management, Indian Institute of Technology, Delhi, India
Appears in Collections:Conference Publications [ECE]

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