A low power low noise amplifier with subthreshold operation in 130 nm CMOS technology

In this article, a 5.8 GHz ISM-band CMOS low noise amplifier (LNA) operating in a subthreshold region is presented. A conventional source degeneration inductor is eliminated for higher signal gain while providing reasonable input impedance. The LNA is fabricated using 130 nm CMOS technology and measured signal gain, noise figure, and power consumption are 13.4 dB, 5.2 dB, and 980 μW, respectively, at target frequency. Also the LNA achieves the highest figure of merit among the recently published subthreshold LNAs.