2–12 GHz high gain CMOS low noise amplifier with common-gate and current-reuse techniques

A low-noise amplifier (LNA) with high gain is presented. The LNA is the outer most part of a transceiver and it is responsible for providing enough gain to the signal with the least distortion possible. This system uses current-reuse technique to achieve high gain with minimal noise. The CMOS 0.18μm technology has been chosen for the design of the LNA at the transistor level. Agilent´s ADS tool has been used to simulate. The LNA achieves S11 maximum of -41.3 dB, average S21 of 12.9 ± 2.9 dB, and an average NF of 3.2 dB over the 2-12 GHz frequency band.