A 3.1-10.6 GHz Ultra-Wideband Low Noise Amplifier with Novel Input Matching Network

In this paper, a two-stage common source low noise amplifier (LNA) with novel input matching network is presented for ultra-wideband (UWB) applications. The proposed input matching network employing the active feedback and an inductive network is proposed to achieve the wideband matching, low noise figure and high flatness gain simultaneously. The proposed LNA has been designed and simulated in the RF-TSMC CMOS 0.18 μm technology by Advanced Design System (ADS). The simulation results exhibit a flat power gain (S21) of 15±1 dB with a noise figure (NF) lower than 3.5 dB and an input impedance matching less than –10 dB over 3.1 to 10.6 GHz bandwidth. It consumes 10 mW from 1 V supply voltage and occupies 0.85 mm2.