NDLI: Envelope tracking power amplifier with dual-mode supply modulator for LTE applications

Content Provider	IEEE Xplore Digital Library
Author	Jooseung Kim Kim, Dongsu Yunsung Cho Kang, Daehyun Byungjoon Park Kim, Bumman
Copyright Year	2012
Description	Author affiliation: Division of IT Convergence Engineering, Pohang University of Science and Technology, San 31, Hyoja-dong, Nam-gu, Gyeongbuk, 790-784, Republic of Korea (Yunsung Cho; Byungjoon Park) \|\| Department of Electrical Engineering, Pohang University of Science and Technology, San 31, Hyoja-dong, Nam-gu, Gyeongbuk, 790-784, Republic of Korea (Jooseung Kim; Kim, Dongsu; Kim, Bumman) \|\| Broadcom Corporation, 14 Cliffwood Avenue, Suite 300, Matawan, NJ 07747, USA (Kang, Daehyun)
Abstract	This paper presents an envelope tracking power amplifier (ET PA) using a dual-mode supply modulator for handset applications. The supply modulator has a combined structure with a linear amplifier and a switching amplifier. The dual-mode supply modulator operates in high power mode and low power mode by converting the supply voltage of the linear amplifier to 5 V and 2.5 V, respectively. For 1.74-GHz long term evolution signal with 10-MHz bandwidth and 6.44 dB peak-to-average power ratio, the ET PA delivers a power-added efficiency (PAE) of 39.8% and an evolved universal terrestrial radio access adjacent channel leakage ratio of −35.7 dBc at an average output power of 27 dBm. The ET PA also delivers a PAE of 22.6% at an average output power of 18 dBm, which is 6.6% higher than that of the conventional ET PA and 13.1% higher than that of the stand-alone PA.
Starting Page	1
Ending Page	3
File Size	642490
Page Count	3
File Format	PDF
ISBN	9781467310857
ISSN	0149645X
e-ISBN	9781467310888
e-ISBN	9781467310864
DOI	10.1109/MWSYM.2012.6258358
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-06-17
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Modulation Power generation Switches Power amplifiers Peak to average power ratio Gain Radio frequency switching amplifier Dual-mode envelope tracking high power mode (HPM) linear amplifier long term evolution (LTE) low power mode (LPM) power amplifier (PA)
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electrical and Electronic Engineering Radiation

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