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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/8309
Title: Envelope tracked pulse gate modulated GaN HEMT power amplifier for wireless transmitters
Authors: Jouzdani M.
Ebrahimi M.M.
Rawat, Karun
Helaoui M.
Ghannouchi F.M.
Published in: IEEE Transactions on Circuits and Systems I: Regular Papers
Abstract: This paper proposes a complete transmitter prototype for wireless applications using envelope tracked pulsed gate modulated power amplifier (PA). The proposed transmitter architecture is developed using two high power 10 W gate modulated PAs combined in a fashion to operate as a switched voltage source for the range of duty cycles of pulses driving the gates of power amplifiers. These PAs are designed and implemented using packaged GaN HEMT transistors from CREE to operate at the carrier frequency of 2.35 GHz. For a 5 MHz bandwidth WiMAX 802.16e down-link signal with the PAPR of 7.9 dB and the oversampling ratio of 100, the average drain efficiency of 46.2% is achieved at the average output power of 35.8 dBm. Using a 5 MHz bandwidth LTE down-link signal with 11 dB PAPR and centered at 2.35 GHz, the power amplifier delivers the average output power of 33.2 dBm with the average drain efficiency of 46%. The adjacent channel leakage ratio (ACLR) measured for this signal is less than -36.85 dBc at 10 MHz offset from the center frequency of 2.35 GHz. © 2014 IEEE.
Citation: IEEE Transactions on Circuits and Systems I: Regular Papers (2015), 62(2): 571-579
URI: https://doi.org/10.1109/TCSI.2014.2362311
http://repository.iitr.ac.in/handle/123456789/8309
Issue Date: 2015
Publisher: Institute of Electrical and Electronics Engineers Inc.
Keywords: Delta-sigma modulation
Doherty power amplifier
field-programmable gate array (FPGA)
GaN HEMT
Long Term Evolution (LTE)
peak-to-average power ratio
power amplifier
quantization noise
Worldwide Interoperability for Microwave Access (WiMAX)
ISSN: 15498328
Author Scopus IDs: 36337115300
35145648200
57000644800
8537514600
7006217592
Author Affiliations: Jouzdani, M., IRadio Laboratory, Department of Electrical and Computer Engineering, University of Calgary, Calgary, AB T2N 1N4, Canada
Ebrahimi, M.M., IRadio Laboratory, Department of Electrical and Computer Engineering, University of Calgary, Calgary, AB T2N 1N4, Canada
Rawat, K., IRadio Laboratory, Department of Electrical and Computer Engineering, University of Calgary, Calgary, AB T2N 1N4, Canada
Helaoui, M., IRadio Laboratory, Department of Electrical and Computer Engineering, University of Calgary, Calgary, AB T2N 1N4, Canada
Ghannouchi, F.M., IRadio Laboratory, Department of Electrical and Computer Engineering, University of Calgary, Calgary, AB T2N 1N4, Canada
Appears in Collections:Journal Publications [ECE]

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