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Linearity vs. Q‐factor of loads for RF amplifiers
Author(s) -
Kim Jinpil,
Park Seongsu,
Lee Sanggug
Publication year - 2003
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.10896
Subject(s) - amplifier , linearity , electrical engineering , electronic engineering , chip , cmos , inductor , matching (statistics) , microwave , engineering , amplifier figures of merit , instrumentation amplifier , rf power amplifier , voltage , telecommunications , mathematics , statistics
This paper analyzes and verifies that RF amplifier linearity as well as gain depend significantly on the quality of the output matching components or the loads (especially the inductor). Two amplifiers with off‐ and on‐chip matching circuits are built and compared. Measurement results show that a driver amplifier with off‐chip reactive output matching provides better linearity and gain of 3.6 dB and 1.6 dB, respectively, as compared to that of the amplifier with on‐chip matching. The amplifiers are implemented for 2.4‐GHz operation based on 0.35‐μm CMOS technology. © 2003 Wiley Periodicals, Inc. Microwave Opt Technol Lett 37: 286–288, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10896