A 1.3 V noise-cancelling low noise amplifier for ultra wideband applications

Abstract

An ultra wideband (UWB) noise-cancelling low-noise amplifier (NCLNA) is proposed in this paper. A common-gate input stage with an input matching network is implemented to make input resistance matching to 50-ohm. The power consumption of the presented NCLNA can be lower by using current-reuse architecture. A noise cancelling technique is adopted to decrease the noise generated by the first common-gate stage. The designed NCLNA is implemented in 180 nm CMOS technology. The simulated results show that the noise figure is among 2.65-3.45 dB within the full bandwidth of 3.1-10.6 GHz. The maximum gain is 15.33 dB in the desired UWB band. Both the input and output reflection coefficients are below -10 dB. The linearity IIP3 is -5.5 dBm at 6 GHz. The core circuit consumption is 9.13mW under a 1.3 V supply voltage.