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|title: ||Bandwidth boosting in transimpedance amplifiers for optical LANs, using delayed feedback|
|authors: ||Martins, N.|
Alves, L. N.
|keywords: ||Active delays|
|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  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.|
|publisher version/DOI: ||http://dx.doi.org/10.1109/ICECS.2005.4633598|
|source: ||Proceedings of the IEEE International Conference on Electronics, Circuits, and Systems|
|appears in collections||DETI - Comunicações|
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