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김학선

Kim, Hak Sun
Internet of Things System Lab.
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A 1.9-GHz triple-mode class-E power amplifier for a polar transmitter

Author(s)
Park, ChangkunKim, YounsukKim, HaksunHong, Songcheol
Issued Date
2007-02
DOI
10.1109/LMWC.2006.890345
URI
https://scholarworks.unist.ac.kr/handle/201301/21544
Fulltext
http://ieeexplore.ieee.org/document/4079629/
Citation
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, v.17, no.2, pp.148 - 150
Abstract
A 1.9-GHz CMOS power amplifier for polar transmitters was implemented with a 0.25-mu m radio frequency CMOS process. All the matching components, including the input and output transformers, were fully integrated. The concepts of mode locking and adaptive load were applied in order to increase the efficiency and dynamic range of the amplifier. The amplifier achieved a drain efficiency of 33% at a maximum output power of 28 dBm. The measured dynamic range was 34 dB for a supply voltage that ranged from 0.7 to 3.3 V. The measured improvement of the low power efficiency was 140% at an output power of 16 dBm.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
ISSN
1531-1309
Keyword (Author)
adaptive loadclass-Edynamic rangeGSMmode lockingpolar transmitter
Keyword
DISTRIBUTED ACTIVE TRANSFORMER

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