A 13.7-mW 21–29-GHz CMOS LNA With 21.6-dB Gain and 2.74-dB NF for 28-GHz 5G Systems

Abstract

We demonstrate a low-power ( <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$P_{D}$ </tex-math></inline-formula> ) and high-gain 21–29-GHz low-noise amplifier (LNA) in 90-nm CMOS for 28-GHz 5G systems. Current-reused architecture is adopted for low <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$P_{D}$ </tex-math></inline-formula> . Gain-boosting and body-floating techniques are used for gain and NF enhancement. The LNA consumes 13.7 mW and achieves prominent <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$S_{21}$ </tex-math></inline-formula> of 21.6 dB, 3-dB bandwidth of 8.1 GHz (21.2–29.3 GHz), minimum noise figure (NF <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$_{\mathrm {min}}$ </tex-math></inline-formula> ) of 2.74 dB, average NF (NF <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$_{\mathrm {ave}}$ </tex-math></inline-formula> ) of 2.99 dB for 21–29 GHz, and figure of merit (FOM) of 61.7 GHz. Moreover, the LNA achieves input third-order intercept point (IIP3) of −9 dBm at 28 GHz. The chip size is only 0.348 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> . To the authors’ knowledge, the NF and FOM performance are one of the best results ever reported for millimeter-wave CMOS LNAs with bandwidth greater than 7 GHz and <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$P_{D}$ </tex-math></inline-formula> lower than 15 mW.