Design, Fabricate And Measurement Of A Low Noise Amplifier For Wimax Applications

This report presents the progress done so far on the design simulation of Low Noise Amplifier (LNA). LNA is one of the important blocks in received RF path of a wireless communication system that is responsible for providing reasonable power gain and linearity, while not degrading the signal-to-noise ratio. So it is designed to provide low noise characteristics at high fi-equency as it signifies impact to the whole communication system. Usually, in RF amplifier, the signal being received by the antenna is usually very weak. So, amplifier will be used to amplifj. the signal. The problems occur when amplifying the signal where the transmitted noise also being amplified. To avoid this fiom happen, the LNA is designed so that the signal is transmitted without contributing too much noise. In WiMAX applications, receiver chain is designed with low noise in order to ensure reliable performance of the receiver. The purpose of this project is to study the characteristics of LNA, design and fabricate the LNA together with applying technical skills in solving problem according to the project requirement. The project begins with literature review on LNA and WiMAX and continues with the simulation using the ADS2004A software and after that, the circuit being transfer into layout and the fabrication purpose is done onto the FR4 board.