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http://hdl.handle.net/10773/5208| Title: | Bandwidth boosting in transimpedance amplifiers for optical LANs, using delayed feedback |
| Author: | 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 openAccess Optical lans Optical Time- delays Transimpedance amplifiers Transimpedance gains Curve fitting Delay circuits Differential amplifiers Feedback Feedback amplifiers Networks (circuits) Telecommunication systems Time delay Bandwidth |
| 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. |
| Peer review: | yes |
| URI: | http://hdl.handle.net/10773/5208 |
| DOI: | 10.1109/ICECS.2005.4633598 |
| ISBN: | 978-9972-61-100-1 |
| Appears in Collections: | DETI - Comunicações |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Icecs05_final.pdf | Documento final | 272.11 kB | Adobe PDF |  |
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