Design of UWB low noise amplifier using noise-canceling and current-reused techniques

摘要

In this paper, an ultra-wideband (UWB) low-noise amplifier (LNA) with low noise-figure (NF) and high power gain (S-21) using 0.18-um CMOS technology is presented, which operates from 3 GHz up to 12 GHz. In the proposed amplifier, a combination of noise-canceling and current-reused technique is used to reduce noise and power consumption, while the gain and the linearity will be improved. The dominant noise source is canceled by the noise-canceling technique. In addition, good input impedance matching is achieved with using both the inductive source degeneration and resistive feedback techniques. The proposed LNA achieves high and flat S-21 of 19.24-20.24 dB and S-11 less than 10 dB for frequencies 3-12 GHz. Additionally, flat NF of 1.72-1.99 dB is achieved for the frequency range of 3-12 GHz. Furthermore, the IIP3 is -5.5 dBm, power consumptions at 1.8-V supply voltage is 23.23 mW and the core layout size is 857.06 mu m x 770.72 mu m.