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Using inductive series feedback to stabilize a microwave distributed amplifier with high gain fets: A new design approach
Author(s) -
Paixato Oswaldo P.,
Souza Rui F.,
Kretly Luiz C.
Publication year - 1993
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.4650060916
Subject(s) - distributed amplifier , transconductance , fet amplifier , microwave , fully differential amplifier , electronic engineering , operational transconductance amplifier , negative feedback amplifier , bandwidth (computing) , amplifier , series (stratigraphy) , direct coupled amplifier , engineering , electrical engineering , computer science , operational amplifier , transistor , telecommunications , cmos , paleontology , voltage , biology
Numerical results are presented to show how series inductive feedback between the source of the FET and ground, in a common‐source configuration, can stabilize a hybrid distributed amplifier. This kind of feedback is useful when using high transconductance FETs. Finally, for a 0.3 × 200‐μm HEMT (NEC 321) in chip form, an unconditionally stable four‐section distributed amplifier is designed using the suggested feedback, without compromising the gain‐bandwidth product. © 1993 John Wiley & Sons, Inc.