In this article, we propose a low-power (2.76 mW) CG LNA for UWB systems. This new matching network consists of a series L S1 -R S1 in series with a parallel L S2 -R S2 to enhance the input matching bandwidth. As demonstrated, flat and high S 21 as well as flat and low NF performances could be achieved by suitably choosing the values of the connecting inductor L C and the peaking inductor L D2 . The state-of-the-art results (P D of 2.76 mW and FOM of 4.3) of the proposed wideband CG LNA indicates that it serves well for 3-to 10-GHz UWB or even higher frequency wideband communication system applications.
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