A low-noise amplifier design for 3.1–10.6 GHz impulse radio ultra wideband receivers

摘要

In this paper the LNA is designed to amplify the radio-signals received in the UWB band (3.1–10.6 GHz) with a good signal-to-noise ratio property, high and flat power gain, good input impedance matching and good phase linearity. The 0.4 μm CMOS technology is used for implementation. A detailed designed is carried for the LNA and is simulated on ADS. The simulation results demonstrate that the gain is flat over the band of interest and is of the order of 12 dB. The noise figure of the designed LNA is good and is in the range of 3.35 to 2.8 dB. The most important achievement is the linearity which is decided by group delay and this implementation achieves group delay variations in the range of ± 12.175 ps.