Abstract
In the ultra-wideband (UWB) communication system receiver, the low noise amplifier (LNA) is the critical module. The LNA is used to amplify the received signal with sufficient gain and as little additional noise as possible. This paper presents a new 3.1–10.6 GHz LNA UWB receivers. The UWB LNA was formed by two stages. The first one uses the resistive current reuse and degenerative parallel LC to provide the input matching over a wideband. The proposed UWB LNA uses an inductive-series peaking technique with cascode common-source amplifier to improve the gain, fatness and consume lower power. This LNA is designed using 0.18 μm CMOS technology. Our finding show that, the low noise amplifier LNA using these techniques allowed us to achieve a maximum power gain of 20.62 dB, a good input/output impedance matching, S11 below −10 dB and S22 below −10dB and an excellent noise figure NF between 1.6–2.5 dB.
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