Print Email Facebook Twitter A 76.5-92.6 GHz CMOS LNA Using Two-Port kQ-Product Theory for Transformer Design Title A 76.5-92.6 GHz CMOS LNA Using Two-Port kQ-Product Theory for Transformer Design Author Zhang, Youming (Southeast University) Wei, Zhennan (Southeast University) Tang, Xusheng (Southeast University) Zhang, L. (TU Delft Electronics; Southeast University) Huang, Fengyi (Southeast University) Date 2022 Abstract This letter presents a convenient approach based on the two-port kQ-product theory to analyze the influence of interwinding capacitive coupling on the efficiency of the transformer. It is demonstrated that a transformer with proper size can benefit from the interwinding capacitive coupling to maximize its efficiency at a desired frequency. The proposed design approach is used in a W-band low-noise amplifier (LNA) fabricated with the 40-nm CMOS process to optimize the insertion loss of the input transformer-based balun. Thanks to the approach, the W-band LNA achieves a minimum noise figure of 5.7 dB, a maximum gain of 18.5 dB, and a 3-dB bandwidth of 76.5-92.6 GHz, while consuming 23.4 mW from a 0.9-V supply. Subject BalunsCouplingsGainkQ-productlow-noise amplifiermillimeter-wave (mmWave)Noise measurementSemiconductor device measurementtransformerTransformersW-band.Windings To reference this document use: http://resolver.tudelft.nl/uuid:116b6ded-f17d-40ca-bbf4-45ca8152ba93 DOI https://doi.org/10.1109/LMWC.2022.3170929 ISSN 1531-1309 Source IEEE Microwave and Wireless Components Letters, 32 (10), 1187-1190 Bibliographical note Accepted author manuscript Part of collection Institutional Repository Document type journal article Rights © 2022 Youming Zhang, Zhennan Wei, Xusheng Tang, L. Zhang, Fengyi Huang Files PDF A_76.5_92.6_GHz_CMOS_LNA_ ... Design.pdf 1.37 MB Close viewer /islandora/object/uuid:116b6ded-f17d-40ca-bbf4-45ca8152ba93/datastream/OBJ/view