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Bandwidth Analysis of Bootstrap Transimpedance Amplifier for Optical Free Space Receiver

Idrus S.M. (S,M. Idrus), and Rais S.S., and Ramli A. (Ramli Abdullah), (2008) Bandwidth Analysis of Bootstrap Transimpedance Amplifier for Optical Free Space Receiver. Elektrika Journal of Electrical Engineering, 10 (1). pp. 13-19. ISSN 01284428

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Official URL: http://fke.utm.my/elektrika/june08/paper3june08.pdf

Affiliations

Universiti Teknologi Malaysia, Faculty of Electrical Engineering, Photonic Techology Centre
Universiti Tun Hussein Onn, Faculty of Electrical and Electronic Engineering, Dept. of Communication Engineering

Abstract

Free Space Optic (FSO) or optical wireless link operates in high noise environments. On the other hand, the performance is subjected to several atmospheric factors like environmental temperature, fog, smoke, haze and rain. Signalto-noise ratio (SNR) can vary radically with the distance and ambient noise. A good sensitivity and a broad bandwidth will habitually use a small photodetection area where the aperture is small. However, FSO optical receiver requires a large aperture and accordingly, to have a large collection area, which possibly will be achieved by using a large area photodetector and large filter. Consequently, large area photodetector produces a high input capacitance that will be reduced the bandwidth. Hence, techniques to reduce the effective detector capacitance are required in order to achieve a low noise as well as wide bandwidth design. In this paper, modeling and analysis of the series and shunt with floating source: and seriesshunt bootstrap transimpedance amplifier (BTA) of front-end receiver for input capacitance reduction will be presented. The result shows that the technique improved the conventional transimpedance amplifier (TIA) bandwidth up to 1000 times with an effective capacitance reduction technique for optical wireless detector.

Item Type:Journal
Keywords:Bootstrap transimpedance amplifier, Free space optic, Optical receiver, Wireless optic photodetector.
Subjects:T Technology, Engineering
ID Code:2434

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[2] J.M. Senior, Optical Fiber Communications. New York: Prentice Hall, 1992

[3] S.B. Alexander, Optical Communication Receiver Design. Bellingham, Washington: SPIE The International Society for Optical Engineering, 1997

[4] C. Hoyle and A. Peyton, “Shunt Bootstrapping Technique to Improve Bandwidth Of Transimpedance Amplifiers”, Electronics Letters, Vol. 35, No. 5, pp. 369-370, 1999.

[5] S.M. Idrus, R. Ramierez-Inguiez and R.J. Green, “Receiver Amplifiers for Optical Wireless Communication System”, . 3rd PREP, University Of Keele, UK, Apr. 2001, pp. 19-20.

[6] F. Centurelli, R. Luzzi, M. Olivieri and A. Trifiletti,

“A Bootstrap Technique for Wideband Amplifiers”,IEEE Transactions on circuits and systems, Vol. 49, No.10, 2002.

[7] R.J. Green, S.M. Idrus, R. Ramirez Iniguez and C. Sweet, “Optical Wireless Interface Technology”, OSDA Workshop, Oundle, April 2005.

[8] S.M. Idrus, N. Hafizah and S.I.A. Azis, “Performance Analysis of Bootstrap Transimpedance Amplifier for Large Windows Optical Wireless Receiver”, RFM2006, Putrajaya. Sept 2006.

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