Premium
Inductive matching technique for a feed‐forward noise‐canceling CMOS low‐noise amplifier
Author(s) -
Chiou HwannKaeo,
Li ChinLung,
Liao HsienYuan,
Lee SungHuang
Publication year - 2010
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.24838
Subject(s) - low noise amplifier , effective input noise temperature , electronic engineering , noise figure , electrical engineering , instrumentation amplifier , y factor , direct coupled amplifier , engineering , amplifier , noise (video) , noise temperature , noise figure meter , cmos , phase noise , operational amplifier , computer science , artificial intelligence , image (mathematics)
An inductive matching technique is proposed for a noise‐canceling CMOS low‐noise amplifier (LNA). This composite LNA consists of a main amplifier and a feed‐forward amplifier. The feed‐forward amplifier provides a noise canceling path to eliminate the noise at the output of the main amplifier. An inductor is used to tune out the remaining capacitive impedance at the output common node of two amplifiers, which provides the proper phase difference to cancel the overall noise voltage. For an optimum noise canceling bias, the measured noise figure is 2.5 dB, which is an improvement of 0.6 dB. ©2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 72–75, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24838