Body Biasing to Compensate for Process Variation in Gain and NF of an LNA RFIC

Jian-Ming Wu,Yan-Tsang Lin,Yuan-Chih Lin,Min-Lang Yang

doi:10.1109/ispacs51563.2021.9651017

Body Biasing to Compensate for Process Variation in Gain and NF of an LNA RFIC

Jian-Ming Wu, Yan-Tsang Lin + Show 2 more

https://doi.org/10.1109/ispacs51563.2021.9651017

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Publication Date: Nov 16, 2021

Affiliation: National Kaohsiung Normal University, Metal Industries Research & Development Centre, Cheng Shiu University

#Noise Figure Variations #Gain Variations + Show 8 more

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Abstract

A body biasing technique is used in a low-noise amplifier (LNA) to compensate for process variations in its gain and noise figure (NF). The body voltage (V<inf>B</inf>) of a common-source transistor is used to adjust the drain current to compensate for variations in LNA gain. The V<inf>B</inf> adjusts the gate resistance of the transistor to compensate for variation in the NF of the LNA. The LNA implemented with TSMC 0.18-μm CMOS standard process has a power consumption of 1.2 mW at a 0.8 V supply voltage. Measurements of the LNA RFIC distribution reveal that compensation reduces the gain and NF variations by factors of 1.9 and 2.6, respectively.

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