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Self‐biased distributed amplifier: Linearity improvement and efficiency enhancement
Author(s) -
Lau Kwok Wai,
Chan Kwai Yu,
Xue Quan,
Chan Chi Hou
Publication year - 2008
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.23711
Subject(s) - linearity , amplifier , wideband , microwave , power (physics) , electronic engineering , electrical engineering , engineering , computer science , physics , telecommunications , cmos , quantum mechanics
A self‐biased distributed amplifier with wideband linearity improvement and efficiency enhancement is presented. With the aid of a self‐adaptive bias network, the location of IMD3 minimum is dynamically manipulated, while the DC bias power of the distributed amplifier is adaptively biased. Experimental two‐tone test successfully demonstrates more than 10 dB and 27% reductions of the first sidelobes and the DC power consumptions are achieved respectively in the proposed design when operating between 900 and 3300 MHz. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 2493–2497, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23711