Narrow Band LNA Design Using OGMOSFET for Noise and Gain Analysis

Abstract

LNA is the first building block of any receiver circuit. In this paper, a narrow band LNA operating at 2.4 GHz is designed in ADS CAD tool. Device used for LNA design is Optically Gated MOSFET (OGMOSFET). For DC bias, gate voltage is 1.5 V and drain voltage is 2V. Gain and noise analysis of the amplifier is carried out under dark and illumination. It is observed that noise is lowered and gain is improved under illumination as that of dark which are expected characteristics of any LNA.