Premium
Stability and noise performance of resistively loaded microwave amplifiers
Author(s) -
Post John E.
Publication year - 2004
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.20101
Subject(s) - amplifier , resistor , resistive touchscreen , microwave , stability (learning theory) , noise (video) , electronic engineering , transistor , engineering , y factor , noise figure , low noise amplifier , transistor array , electrical engineering , control theory (sociology) , computer science , cmos , telecommunications , voltage , control (management) , machine learning , artificial intelligence , image (mathematics)
Resistive loading is a classic technique to guarantee the unconditional stability of microwave amplifiers at the operating frequency, but the amplifier is potentially unstable at other frequencies. A technique is proposed to predict microwave amplifier stability at all frequencies by solving for the stability parameter of the overall cascaded resistor/transistor network. Eight different stabilizing networks are investigated and shown to have very different stabilizing effects as a function of frequency. A method to determine the effect of resistive stabilization on amplifier‐noise performance is presented. These results allow the designer to choose a stabilizing resistor network that provides the best compromise between gain, noise, and stability for a desired application. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 41: 228–231, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20101