Bridged T-coil: Difference between revisions

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[[File:454-tcoil.jpg|thumb|400px|right]]
[[File:454-tcoil.jpg|thumb|400px|right|Bridged T coil in [[454]] circuit. L337 and C337 constitute a bridged T coil. L336 is just a tapped T coil.]]
The '''(bridged) T-coil''' is a circuit topology that extends signal bandwidth.
The '''(bridged) T-coil''' is a circuit topology that extends signal bandwidth.
A bridged T coil is a circuit configuration with a capacitor from input to resistive load and extends signal bandwidth (as does an unbridged T coil).
The bridged T coil can also turn a complex load impedance such as an RC or a series RLC into a purely resistive load at all frequencies.
A regular (not bridged by a capacitor) T coil cannot do the latter.
[[Bob Ross]] used Wang Algebra to derive equations for many different forms of the T coil. He has delivered multiple papers on high frequency design internationally.


==Links==
==Links==
* "Who Wakes the Bugler?", in ''The Art and Science of Analog Circuit Design'', Jim Williams (Ed.), July 1998.  ISBN 978-0-7506-7062-3.  → [https://books.google.at/books?
* "Who Wakes the Bugler?", in ''The Art and Science of Analog Circuit Design'', Jim Williams (Ed.), July 1998.  ISBN 978-0-7506-7062-3.  → [https://books.google.at/books?id=SPwqg7qpFWUC&pg=PR7 Google Books]
* B. Razavi, ''[http://www.seas.ucla.edu/brweb/papers/Journals/BRFall15TCoil.pdf The Bridged T-Coil, A Circuit for All Seasons]''. IEEE Solid-State Circuits Magazine, Fall 2015
* B. Razavi, ''[http://www.seas.ucla.edu/brweb/papers/Journals/BRFall15TCoil.pdf The Bridged T-Coil, A Circuit for All Seasons]''. IEEE Solid-State Circuits Magazine, Fall 2015
* Paul Rako, ''[https://www.electronicdesign.com/technologies/analog/article/21807815/whats-all-this-tcoil-stuff-anyhow What’s All This T-Coil Stuff, Anyhow?] electronicdesign.com, 2019
* [[Bob Ross]], ''[https://ibis.org/summits/feb11/ross.pdf T-Coil Topics]'' DesignCon IBIS Summit, Santa Clara, CA, 2011
* P. Starič, E. Margan, ''[http://www-f9.ijs.si/~margan/WBAmps/wbamps2x.pdf Wideband Amplifiers, Part 2: Inductive Peaking Circuits]''
* P. Starič, E. Margan, ''[http://www-f9.ijs.si/~margan/WBAmps/wbamps2x.pdf Wideband Amplifiers, Part 2: Inductive Peaking Circuits]''
* [[Dennis Feucht]], ''Handbook of Analog Circuit Design''. New York: Academic Press, 1990
* [[Dennis Feucht]], ''Handbook of Analog Circuit Design''. New York: Academic Press, 1990
* E. L. Ginzton, [[Bill Hewlett|W. R. Hewlett]], J. H. Jasberg, J. D. Noe, ''Distributed Amplification''. Proceedings of the IRE, pp 956-969, August 1948.
* E. L. Ginzton, [[Bill Hewlett|W. R. Hewlett]], J. H. Jasberg, J. D. Noe, ''Distributed Amplification''. Proceedings of the IRE, pp 956-969, August 1948.


[[Category:Circuits and concepts]]
[[Category:Circuits and Concepts]]

Latest revision as of 10:28, 30 November 2023

Bridged T coil in 454 circuit. L337 and C337 constitute a bridged T coil. L336 is just a tapped T coil.

The (bridged) T-coil is a circuit topology that extends signal bandwidth.

A bridged T coil is a circuit configuration with a capacitor from input to resistive load and extends signal bandwidth (as does an unbridged T coil). The bridged T coil can also turn a complex load impedance such as an RC or a series RLC into a purely resistive load at all frequencies. A regular (not bridged by a capacitor) T coil cannot do the latter.

Bob Ross used Wang Algebra to derive equations for many different forms of the T coil. He has delivered multiple papers on high frequency design internationally.

Links