A 76.5-92.6 GHz CMOS LNA Using Two-Port kQ-Product Theory for Transformer Design

Youming Zhang; Zhennan Wei; Xusheng Tang; Linghan Zhang; Fengyi Huang

doi:10.1109/LMWC.2022.3170929

A 76.5-92.6 GHz CMOS LNA Using Two-Port kQ-Product Theory for Transformer Design

Youming Zhang, Zhennan Wei, Xusheng Tang, Linghan Zhang, Fengyi Huang

Electronics

Research output: Contribution to journal › Article › Scientific › peer-review

5 Citations (Scopus)

58 Downloads (Pure)

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.

Original language	English
Pages (from-to)	1187-1190
Number of pages	4
Journal	IEEE Microwave and Wireless Components Letters
Volume	32
Issue number	10
DOIs	https://doi.org/10.1109/LMWC.2022.3170929
Publication status	Published - 2022

Bibliographical note

Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Keywords

Baluns
Couplings
Gain
kQ-product
low-noise amplifier
millimeter-wave (mmWave)
Noise measurement
Semiconductor device measurement
transformer
Transformers
W-band.
Windings

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A_76.592.6_GHz_CMOS_LNA_Using_Two_Port_kQ_Product_Theory_for_Transformer_DesignFinal published version, 1.13 MB

Cite this

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title = "A 76.5-92.6 GHz CMOS LNA Using Two-Port kQ-Product Theory for Transformer Design",

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.",

keywords = "Baluns, Couplings, Gain, kQ-product, low-noise amplifier, millimeter-wave (mmWave), Noise measurement, Semiconductor device measurement, transformer, Transformers, W-band., Windings",

author = "Youming Zhang and Zhennan Wei and Xusheng Tang and Linghan Zhang and Fengyi Huang",

note = "Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.",

year = "2022",

doi = "10.1109/LMWC.2022.3170929",

language = "English",

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AU - Zhang, Youming

AU - Wei, Zhennan

AU - Tang, Xusheng

AU - Zhang, Linghan

AU - Huang, Fengyi

N1 - Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

PY - 2022

Y1 - 2022

N2 - 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.

AB - 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.

KW - Baluns

KW - Couplings

KW - Gain

KW - kQ-product

KW - low-noise amplifier

KW - millimeter-wave (mmWave)

KW - Noise measurement

KW - Semiconductor device measurement

KW - transformer

KW - Transformers

KW - W-band.

KW - Windings

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U2 - 10.1109/LMWC.2022.3170929

DO - 10.1109/LMWC.2022.3170929

M3 - Article

AN - SCOPUS:85132538821

SN - 1531-1309

VL - 32

SP - 1187

EP - 1190

JO - IEEE Microwave and Wireless Components Letters

JF - IEEE Microwave and Wireless Components Letters

IS - 10

ER -

A 76.5-92.6 GHz CMOS LNA Using Two-Port kQ-Product Theory for Transformer Design

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