Series peaked noise matched gm-boosted 3.1–10.6 GHz CG CMOS differential LNA for UWB WiMedia

Series peaked noise matched gm-boosted 3.1–10.6 GHz CG CMOS differential LNA for UWB WiMedia

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A low-power noise-matched fully-differential common-gate (CG) low-noise amplifier (LNA) is presented for ultra-wideband (UWB) operating in the 3.1–10.6 GHz band. Performance was optimised by employing the transconductance ‘gm’-boosted CG LNA topology with series peaking along with an input noise matching network. A common source gm-boosting amplifier, in conjunction with an LC T-network, was used to share the bias current with the CG stage. The LNA was demonstrated using 130 nm CMOS process and consumed 7 mW from a 1 V supply. It exhibited an input return loss (S11) and an output return loss (S22) of −10.5 dB and −14 dB, respectively. Also, it achieved a forward power gain (S21) of 14.5 dB and a noise figure between 4.5 and 5.0 dB.


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      • M. Khurram , S.M.R. Hasan . A 3–5 GHz current-reuse gm-boosted CG LNA for ultrawideband in 130 nm CMOS. IEEE Trans. Very Large Seale Integr. (VLSI) Syst.

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