Title :
Ill conditioning loci in noise parameter determination
Author :
O´Callaghan, J.M. ; Alegret, A. ; Pradell, L. ; Corbella, I.
fDate :
8/29/1996 12:00:00 AM
Abstract :
An analysis of the problem of noise parameter determination is carried out. It is found that the mathematical problem is ill-posed if all the source reflection coefficients (Γs) used in the measurements fall onto a line, circle or are of a circle in the Smith chart. This is used to expand on existing criteria for selecting Γ s and to rule out sources of accuracy degradation
Keywords :
circuit noise; microwave circuits; two-port networks; Smith chart; accuracy degradation; ill conditioning loci; linear two-port; microwave circuits; noise figure; noise parameter determination; source reflection coefficients;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19961127
