A Low-Power Current-Reuse Resistive-Feedback LNA in 90nm CMOS

In this paper, an inductorless wideband low noise amplifier is presented which can cover various wireless standards. The amplifier benefits from techniques such as resistive feedback to achieve input impedance matching, Miller capacitance to compensate frequency bandwidth, and current-reuse transconductance-boosting to reduce power consumption. The required equations for the input impedance matching, gain, and noise figure are presented. Simulation results in 90nm CMOS technology show that the amplifier has a frequency bandwidth of 400MHz-10GHz with a voltage gain of 22.2dB and a noise figure of 1.86-2.42dB. The total power consumption of the amplifier is approximately equal to 16.6mW.