Equivalent Circuit Model of High Power LEDs for VLC Systems

Li, Xicong, Ghassemlooy, Zabih, Zvanovec, Stanislav, Zhang, Min and Burton, Andrew (2019) Equivalent Circuit Model of High Power LEDs for VLC Systems. In: The 2nd West Asian Colloquium on Optical Wireless Communications (WACOWC2019): 27-28 April, Shahid Beheshti University, Tehran, Iran. IEEE, Piscataway, NJ, pp. 90-95. ISBN 9781728137681, 9781728137674

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Equi Cir Model-2nd-Sub-XL.pdf - Accepted Version

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Official URL: https://doi.org/10.1109/wacowc.2019.8770209

Abstract

The equivalent circuit model for two commercial high power LEDs for illuminance is proposed and extensive measurements have been carried out to verify the accuracy of the model. In addition, the frequency response of two LEDs in the optical domain can be estimated using the transfer function of electrical equivalent circuit. It is shown that, the electrical parasitics in the chip and packaging introduce significant attenuation beyond a resonance frequcency. Care should be taken when designing high-speed driver and/or equalization circuits for VLC systems.

Item Type: Book Section
Uncontrolled Keywords: LED, equivalent circuit, impedance, impedance matching, driver circuit, bandwidth, carrier lifetime, VLC
Subjects: H600 Electronic and Electrical Engineering
Department: Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User: Elena Carlaw
Date Deposited: 29 Jul 2019 15:12
Last Modified: 19 Nov 2019 10:31
URI: http://nrl.northumbria.ac.uk/id/eprint/40190

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