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On the Calculation and Simulation of Loop Gain in Feedback Circuits

Behmanesh, Baktash LU orcid and Andreani, Pietro LU (2023) In IEEE Transactions on Circuits and Systems II: Express Briefs 70(11). p.4033-4037
Abstract

We derive the expression of the loop gain in a circuit containing one or more feedback loops, where the transfer functions building the expression are found by means of a few AC analyses on the circuit. No approximations or assumptions on the nature of the loop or of the impedances therein contained are necessary. While hand calculations are certainly possible in the case of simpler circuits, the method is especially suitable for deployment in an analog circuit simulator environment.

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author
and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Circuit stability, Circuit theory, Feedback loop, feedback theory, loop gain, Manganese, stability, Stability criteria, Thermal stability, Transfer functions, Voltage
in
IEEE Transactions on Circuits and Systems II: Express Briefs
volume
70
issue
11
pages
5 pages
publisher
IEEE - Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • scopus:85162671061
ISSN
1549-7747
DOI
10.1109/TCSII.2023.3284669
language
English
LU publication?
yes
id
84274a9f-16f4-4195-ba54-2baae7383552
date added to LUP
2023-11-07 15:44:42
date last changed
2023-11-22 04:13:52
@article{84274a9f-16f4-4195-ba54-2baae7383552,
  abstract     = {{<p>We derive the expression of the loop gain in a circuit containing one or more feedback loops, where the transfer functions building the expression are found by means of a few AC analyses on the circuit. No approximations or assumptions on the nature of the loop or of the impedances therein contained are necessary. While hand calculations are certainly possible in the case of simpler circuits, the method is especially suitable for deployment in an analog circuit simulator environment.</p>}},
  author       = {{Behmanesh, Baktash and Andreani, Pietro}},
  issn         = {{1549-7747}},
  keywords     = {{Circuit stability; Circuit theory; Feedback loop; feedback theory; loop gain; Manganese; stability; Stability criteria; Thermal stability; Transfer functions; Voltage}},
  language     = {{eng}},
  month        = {{06}},
  number       = {{11}},
  pages        = {{4033--4037}},
  publisher    = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}},
  series       = {{IEEE Transactions on Circuits and Systems II: Express Briefs}},
  title        = {{On the Calculation and Simulation of Loop Gain in Feedback Circuits}},
  url          = {{http://dx.doi.org/10.1109/TCSII.2023.3284669}},
  doi          = {{10.1109/TCSII.2023.3284669}},
  volume       = {{70}},
  year         = {{2023}},
}