A review of microwatt low-noise amplifier for microwave and millimeter-wave IoT applications

In this paper, a review of microwatt low-noise amplifier (LNA) is presented. To achieve gain improvement and noise figure reduction simultaneously, a gain-boosting technique using transformer feedback is adopted in this LNA design. By employing current-reused, and forward-body-bias techniques, LNA can operate at a reduced supply voltage with micro-watt dc power consumption while maintaining good gain performance. From the measurement results, under a supply voltage of 0.63V, the LNA exhibits a minimum noise figure of 3.66 dB and a gain of 14.7 dB with only 387μW dc power consumption.