Low-noise amplifier design for ultra-wideband OFDM receiver

The most important block of a wireless receiver front end is the low noise amplifier. A receiver's noise figure performance rests primarily on the LNA's performance. The implementation of the low noise amplifier (LNA) front-end is one of the challenging aspects in emerging ultra wide-band (UWB) radio frequency (RF) systems. An implementation in CMOS is the goal of modern receiver front end design to achieve complete system-on-chip (SoC) integration. There are only a few wide-band LNA designs published in the recent journals, each working on different aspects of UWB defined technologies. In this work I will provide a brief overview of UWB-OFDM technology and wideband amplifier design and investigate various parameters inhibiting the efficiency of wideband amplifiers. I will design and analyze two different ultra wide band low noise amplifier configurations satisfying all the aspects of the UWB-OFDM technology specifications. The primary goal of the design is to obtain a noise figure less than 2.5 dB with a low power consumption of less than 10 mW. I will show various techniques involved in achieving the desired specifications.