Bridged 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
- "Who Wakes the Bugler?", in The Art and Science of Analog Circuit Design, Jim Williams (Ed.), July 1998. ISBN 978-0-7506-7062-3. → Google Books
- B. Razavi, The Bridged T-Coil, A Circuit for All Seasons. IEEE Solid-State Circuits Magazine, Fall 2015
- Paul Rako, What’s All This T-Coil Stuff, Anyhow? electronicdesign.com, 2019
- Bob Ross, T-Coil Topics DesignCon IBIS Summit, Santa Clara, CA, 2011
- P. Starič, E. Margan, Wideband Amplifiers, Part 2: Inductive Peaking Circuits
- Dennis Feucht, Handbook of Analog Circuit Design. New York: Academic Press, 1990
- E. L. Ginzton, W. R. Hewlett, J. H. Jasberg, J. D. Noe, Distributed Amplification. Proceedings of the IRE, pp 956-969, August 1948.
Documents Referencing Bridged T-coil
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Patents that may apply to Bridged T-coil
| Page | Title | Inventors | Filing date | Grant date | Links |
|---|---|---|---|---|---|
| Patent US 3532982A | Transmission line termination circuit | Donald F Zeidlhack • Richard K White | 1967-01-03 | 1970-10-06 | Bridged T-coil • P6047 • P6053 • P6053A • P6053B |