Adaptive Dynamic Filter using MOSFET Receiver

Abstract

In Optical wireless communication systems a reliable link is required for user mobility under different channel conditions. In this paper, concept of adaptive receiver for bandwidth system using MOSFET is discussed that will maintain and enhance the reliability of the optical link for different channel conditions. The proposed system is found to be more sensitive to any variations in signal-to-noise ratio (SNR) at higher noise magnitudes. The circuit design consists of four circuits which are rectifier, low pass filter, dynamic filter, and output amplifier. The circuit was simulated for 43.775 kHz (0.01μf) to 0.2 MHz (44pF). The designed adaptive system can be used in existing optical system to vary the bandwidth of receiver for different applications.