Low Noise Amplifier at 60 GHz Using Low Loss On-Chip Inductors

This paper proposes the technique of using low loss on-chip inductors in the design of low noise amplifier (LNA) that offers high gain and lower noise figure. Upon the substrate of octagonal spiral inductors, a surface of patterned ground shield is inserted that significantly reduces the substrate l...

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Bibliographic Details
Published inJournal of electrical and computer engineering Vol. 2023; pp. 1 - 15
Main Authors Balamurugan, Karthigha, Nirmala Devi, M., Jayakumar, M.
Format Journal Article
LanguageEnglish
Published New York Hindawi 2023
Hindawi Limited
Wiley
Subjects
Amplification
Amplifiers
Customization
Design
Electric fields
High gain
Inductors
Low noise
Noise levels
Power consumption
Substrates
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Summary:This paper proposes the technique of using low loss on-chip inductors in the design of low noise amplifier (LNA) that offers high gain and lower noise figure. Upon the substrate of octagonal spiral inductors, a surface of patterned ground shield is inserted that significantly reduces the substrate loss. This effect limits the penetration of electric filed into the substrate, thereby improving the inductor’s Quality (Q) factor and decouples the substrate parasitic that results with smaller series resistance. These effects result with improved gain and noise figure of LNA at 60 GHz when the designed inductors are included in it to serve as gate, source, and load inductances. The proposed work uses an inductively degenerated 3-stage common-source LNA in a 65-nm CMOS process. Simulation results show that the LNA using custom designed inductors achieves the peak gain of 17.02 dB at 56 GHz with a noise figure of 5 dB at 60 GHz for the power consumption of 10 mW. The figure-of-merit (FOM) is 14.56 which is 0.8 times more than the LNA design using off-chip inductors. A complete LNA layout using custom designed inductor footprints has been presented and analyzed.
ISSN:2090-0147
2090-0155
DOI:10.1155/2023/2469673