Wide Band pulse matched LNA for low power architecture (original) (raw)

2005 IEEE International Conference on Ultra-Wideband

Abstract

ABSTRACT New architectures, dedicated to UWB low data rate systems, such as for instance, peak detection or energy detection focus on power saving. In this context, a LNA with ideal flat gain response over the whole bandwidth [3 GHz-5 GHz] is no more mandatory. This paper proposes a new approach, which relies on a matched amplification to the input pulse. This technique enables to increase gain up to 7.7 dB for a given consumption. A simulated CMOS design based on common source amplifier with inductive degeneration is presented for illustration. Energetic gain is close to 15 dB with a minimum noise figure of 2.3 dB and an input IP1 of 11.4 dBm. Core of the LNA dissipates less than 2.6 mW.

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