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

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2 Author(s)
Khurram, M. ; CRAVE - Center for Res. in Analogue & VLSI Microsyst. dEsign, Massey Univ., Auckland, New Zealand ; Hasan, S.M.R.

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.

Published in:

Electronics Letters  (Volume:47 ,  Issue: 24 )