Design and analysis of a 3.1–10.6 GHz UWB low noise amplifier with current reused technique

Two ultra wideband low noise amplifiers (LNAs) are presented. A common source topology is adopted for input stage to achieve wideband input matching, while a cascode stage is used as the second stage to provide power gain at high frequencies. The first work is common source with a reuse PMOS current source. It achieves a maximum power gain of 15.2dB and 3.7dB minimum NF. The power consumption is 16 mW from a 1.8 v supply. The second work is current reused technique that we use an NMOS replacing the feedback resistance to achieve flat gain. It achieves a maximum power gain of 10.5dB and 2.7dB minimum NF.