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Title: Maximizing bandwidth in CCII for wireless optical applications
Author: Alves, L. N.
Aguiar, R.L.
Keywords: Bandwidth limitation
Current amplifier
Dynamic range
Fast ethernet
Intrinsic capacitance
Low costs
Maximum gain
Noise floor
Optical interfaces
Reduced inputs
Second generation current conveyors
Transimpedance amplifiers
Wide bandwidth
Wireless application
Differential amplifiers
Electric impedance
Wireless telecommunication systems
Issue Date: 2001
Publisher: Institute of Electrical and Electronics Engineers (IEEE)
Abstract: This paper discusses bandwidth problems associated with the usage of second-generation current conveyors in wireless optical systems, and presents a new current amplifier with wide bandwidth and large input dynamic range, developed for Fast Ethernet wireless applications This current amplifier is used to interconnect low cost photo-detectors (with large intrinsic capacitance) with transimpedance amplifiers, overcoming typical bandwidth limitations imposed by the input transducers. This current adaptation concept has proved to be adequate for increasing both bandwidth and dynamic range of traditional optical interfaces. The proposed current amplifier architecture is based on a CCII with reduced input impedance and achieves, for a lOpF input photo detector, a maximum gain of 18dB with a 130MHz bandwidth, with a noise floor of 9.2pA/√Hz,. The expected input dynamic range is larger than 65dB. © 2001 IEEE.
Peer review: yes
DOI: 10.1109/ICECS.2001.957409
ISBN: 9780780370579
Appears in Collections:DETI - Comunicações

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