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 Bandwidth boosting in transimpedance amplifiers for optical LANs, using delayed feedback
Please use this identifier to cite or link to this item http://hdl.handle.net/10773/5208

title: Bandwidth boosting in transimpedance amplifiers for optical LANs, using delayed feedback
authors: Martins, N.
Barbosa, L.
Alves, L. N.
Aguiar, R.L.
keywords: Active delays
Bandwidth enhancements
Delayed feedbacks
Design steps
Designed circuits
Feedback loops
Feedback networks
Gain amplifiers
Intrinsic capacitances
Open loops
Optical lans
Time- delays
Transimpedance amplifiers
Transimpedance gains
Curve fitting
Delay circuits
Differential amplifiers
Feedback amplifiers
Networks (circuits)
Telecommunication systems
Time delay
issue date: 2005
publisher: Institute of Electrical and Electronics Engineers (IEEE)
abstract: Delayed-feedback amplifiers are composed of, a forward gain amplifier, a feedback network and a time-delay element. Recently published results [1] claim the possibility of bandwidth enhancement for this type of systems, simply by a judicious choice of loop-gain, open loop poles and the net time-delay. This paper describes the design steps for a shunt-shunt feedback amplifier with an active delay on the feedback loop. The designed circuit was optimized for Free-Space Optical (FSO) line-of-sight receivers. Achieved results show that the inclusion of the active delay, improve bandwidth in a maximum of 60%. A maximum of 1.5THzΩ. GBW (11kΩ. transimpedance gain) was achieved with a photodiode having intrinsic capacitance of 100pF.
URI: http://hdl.handle.net/10773/5208
ISBN: 978-9972-61-100-1
publisher version/DOI: http://dx.doi.org/10.1109/ICECS.2005.4633598
source: Proceedings of the IEEE International Conference on Electronics, Circuits, and Systems
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