A 2.4-GHz Resistive Feedback LNA in 0.13-$mu$m CMOS
Joo, S.
Choi, T.-Y.
Jung, B.
This paper appears in: Solid-State Circuits, IEEE Journal of
Publication Date: Nov. 2009
Volume: 44,
Issue: 11
On page(s): 3019-3029
ISSN: 0018-9200
Digital Object Identifier: 10.1109/JSSC.2009.2031912
Current Version Published: 2009-11-03
Abstract A $g_{m}$-boosted resistive feedback low-noise amplifier (LNA) using a series inductor matching network and its application to a 2.4 GHz LNA is presented. While keeping the advantage of easy and reliable input matching of a resistive feedback topology, it takes an extra advantage of $g_{m}$-boosting as in inductively degenerated topology. The gain of the LNA increases by the $Q$-factor of the series RLC input network, and its noise figure (NF) is reduced by a similar factor. By exploiting the $g_{m}$-boosting property, the proposed fully integrated LNA achieves a noise figure of 2.0 dB, S21 of 24 dB, and IIP3 of ${- 11}~ hbox{dBm}$ while consuming 2.6 mW from a 1.2 V supply, and occupies 0.6 ${hbox {mm}}^{2}$ in 0.13-$mu{hbox {m}}$ CMOS, which provides the best figure of merit. This paper also includes an LNA of the same topology with an external input matching network which has an NF of 1.2 dB.
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