NDLI: Hybrid EER transmitter using highly efficient saturated power amplifier for 802.16e mobile WiMAX application

Content Provider	IEEE Xplore Digital Library
Author	Ildu Kim Jangheon Kim Junghwan Moon Jungjoon Kim Young Yun Woo Bumman Kim
Copyright Year	2009
Description	Author affiliation: Telecommunication R&D Center, Samsung Electronics co., LTD, Suwon, Gyeonggi, 442-742, Republic of Korea (Young Yun Woo) \|\| Department of Electrical Engineering, Pohang University of Science and Technology(POSTECH), Gyeongbuk, 790-784, Republic of Korea (Ildu Kim; Jangheon Kim; Junghwan Moon; Jungjoon Kim; Bumman Kim)
Abstract	We have demonstrated a highly efficient Hybrid Envelope Elimination and Restoration transmitter for IEEE 802.16e Mobile WiMAX application using a highly efficient saturated Power amplifier (PA). For the optimum H-EER operation, the PA has been designed to have a maximum PAE at the average V region by using 10 W (P) GaN High Electron Mobility Transistor. The maximum Power-added efficiency (PAE) is a 74.07 % at the 14 V V. The bias modulator designed using a Hybrid Switching Amplifier (HSA) has a 73.3 % of efficiency. In the interlock experiment, the transmitter has shown an excellent PAE performance of 45.9 % at an average output power of 33.07 dBm with drain efficiency (DE) of 48.86 %. By using digital predistortion technique, the Relative Constellation Error (RCE) has been satisfied the specification of −30 dB with −36.88 dB. When considering the saturated PA with constant drain bias, the average PAE of the proposed transmitter has been hugely improved, about 13.64 %. These results clearly show that the H-EER transmitter using the saturated PA can deliver the excellent PAE performance.
Starting Page	1385
Ending Page	1388
File Size	302751
Page Count	4
File Format	PDF
ISBN	9781424428038
ISSN	0149645X
DOI	10.1109/MWSYM.2009.5165964
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-06-07
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Transmitters High power amplifiers WiMAX Voltage Peak to average power ratio Impedance Power system harmonics Gallium nitride HEMTs Power generation Envelope Elimination and Restoration (EER) Gallium Nitride (GaN) HEMT high efficiency power amplifier
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering Radiation

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