A 22–33-GHz Gm -Boosting Low-Power Noise-Canceling LNA in 40-nm CMOS Process

2024/01/18 by Santosh Kumar Khyalia, Rajesh H. Zele, Rajesh Zele +2
Engineering · #Radio Frequency Integrated Circuit Design #Microwave Engineering and Waveguides #Millimeter-Wave Propagation and Modeling

paper · doi:10.1109/tmtt.2024.3349605

Abstract

A new transformer-based noise-canceling low-noise amplifier (NC-LNA) is proposed for millimeter-wave (mmWave) <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">K</tex-math> </inline-formula> / <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">Ka</tex-math> </inline-formula> -band applications. The NC-LNA consists of a transformer-based <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">g_m</tex-math> </inline-formula> boosted common gate (CG) amplifier in the main path and a common source (CS) amplifier for an auxiliary path. The transformer is used at the input side to achieve the gain-boosting to the CG amplifier, wideband input matching. It also provides an out-of-phase RF signal to the CG amplifier and an in-phase signal to the CS amplifier. The gain control in the main and auxiliary paths and staggered tuning are implemented to achieve a low-noise figure (NF) and flat gain. The low-noise amplifier (LNA) is designed and fabricated in a 40-nm CMOS process with an active area of 375 <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">×</tex-math> </inline-formula> <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">685~\mum²</tex-math> </inline-formula> . The measured result shows that the LNA achieves a peak gain of 12.3 dB in a 3-dB bandwidth frequency of 21.9–33.7 GHz, the lowest NF of 2.8 dB while consuming 8.5 mW from 0.6 V supply. The third-order intercept point IIP3 and input referred 1-dB compression point IP1 dB are 2 and <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">-</tex-math> </inline-formula> 7.7 dBm, respectively.

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