Ramli, A., Idrus, S.M., Green, Roger and Supa’at, A.S.M. (2012) Gain flattening technique for optical wireless front-end receiver considering various large window photodetectors. Optik - International Journal for Light and Electron Optics, Volume 123 (Issue 24). pp. 2218-2221. doi:10.1016/j.ijleo.2011.10.037 ISSN 0030-4026.

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Abstract

A novel gain flattening technique for an optical wireless front-end receiver structure involving a bootstrap transimpedance amplifier (BTA) integrated with a MEMS variable feedback capacitor has been demonstrated. The MEMS varicap replaces a fixed capacitance as the feedback element in the front end system to optimize the performance of the BTA in terms of its frequency response. The implementation of the MEMS device with a BTA optical front-end receiver was verified using CoventorWare ARCHITECT. The simulation results showed that the approach can significantly flatten the peaking gain by up to 14 dB, when considering a system with various photodetector capacitances, ranging in value from 100 pF to 1 nF.

Item Type:	Journal Article
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:	Faculty of Science, Engineering and Medicine > Engineering > Engineering
Journal or Publication Title:	Optik - International Journal for Light and Electron Optics
Publisher:	Urban und Fischer Verlag
ISSN:	0030-4026
Official Date:	December 2012
Dates:	Date Event December 2012 Published
Volume:	Volume 123
Number:	Issue 24
Page Range:	pp. 2218-2221
DOI:	10.1016/j.ijleo.2011.10.037
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access

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