Receiver Front-End Bandwidth Enhancement Design


  • M.F.L. Abdullah Faculty of Electrical & Electronic Engineering, UTHM
  • R.J Green University of Warwick, UK


photodetector, transimpedance preamplifier


This paper is concerned with a systematic approach to the design of receiver for indoor optical wireless communication. In particular, it is concerned with how one properly chooses the front-end preamplifier and biasing circuitry for the photodetector; and comparison between differences types of amplifier, and method of bandwidth enhancement. For most photodetector applications, large values of RL and CD would severely restrict bandwidth. It is shown that a proper front-end design incorporates a transimpedance preamplifier which tends to integrate the detector output. Such a design provides significant reduction in photodiode capacitance and increase bandwidth when compared to a design which does not integrate initially. The theory and design obstacles of indoor optical wireless receiver delivery in addition to techniques for mitigating these effects and shows that infrared is a viable alternative to radio for certain application is also presented.


How to Cite

Abdullah, M., & Green, R. (2011). Receiver Front-End Bandwidth Enhancement Design. Journal of Telecommunication, Electronic and Computer Engineering (JTEC), 3(1), 69–78. Retrieved from