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Gain‐sensitivity analysis for cascaded two‐ports and application to distributed‐parameter amplifiers
Author(s) -
Güneş Filiz,
Altunç Serhat
Publication year - 2004
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.20034
Subject(s) - noise figure , amplifier , distributed amplifier , sensitivity (control systems) , power gain , electrical impedance , standing wave ratio , bandwidth (computing) , electronic engineering , open loop gain , factorization , microwave , computer science , automatic gain control , engineering , rf power amplifier , electrical engineering , telecommunications , algorithm , microstrip antenna , antenna (radio)
Enhancement of a gain‐sensitivity analysis of electrical networks is presented by computing gain sensitivities with respect to network parameters. A simple and versatile method. The so‐called chain‐sensitivity matrix is presented and compared with the current method in the literature, gain factorization, for the gain sensitivities of the cascaded networks. Analytical formulas are derived to calculate gain sensitivities of the T and Π types of distributed‐parameter amplifiers with respect to the physical length l and characteristic impedance Z 0 , rather than using a time‐intensive computer‐based perturbation method. The numerical results of the T ‐ and Π‐type amplifiers for the design targets of noise figure F req = 0,46 dB (⇔ 1, 12) input VSWR V ireq = 1, power gain G Treq = 12 dB (⇔ 15, 86) and the bandwidth B = 2 GHz − 11 GHz are given in comparison to each other. © 2004 Wiley Periodicals, Inc. Int J RF and Microwave CAE 14: 462–474, 2004.