A High-Efficiency NRMGC-Based VCO with Enhanced Transconductance and Low Phase Noise

Aulya Sholehah Wataawa Sau; Hapsah Aulia Azzahra; Muhammad Fakhri Mauludin; Jusung Kim

doi:10.1109/LASCAS64004.2025.10966293

A High-Efficiency NRMGC-Based VCO with Enhanced Transconductance and Low Phase Noise

Aulya Sholehah Wataawa Sau, Hapsah Aulia Azzahra, Muhammad Fakhri Mauludin, Jusung Kim

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

A negative resistance multi-gated circuit (NRMGC) integrated with an NMOS cross-coupled pair is proposed in this design. The topology incorporates four parallel PMOS transistors, with two configured for cross-coupled differential operation and the other two providing a feedback negative resistance. This configuration effectively reduces phase noise from high-order frequency currents through cancellation. The added NMOS cross-coupled pair enhances the transconductance and headroom of the NRMGC, addressing its limited voltage swing. Implemented using TSMC 65 nm LP technology, the proposed VCO achieves a tuning range of 18 GHz to 20.4 GHz. With a high voltage swing and robust startup, the design delivers exceptional phase noise performance at 110.4 dBc/Hz. Furthermore, it boasts an impressive Figure of Merit (FoM) of -190 dBc/Hz and consumes only 4.8 mW of power, highlighting its excellent overall performance.

Original language	English
Title of host publication	2025 IEEE 16th Latin American Symposium on Circuits and Systems, LASCAS 2025 - Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9798331522124
DOIs	https://doi.org/10.1109/LASCAS64004.2025.10966293
State	Published - 2025
Event	16th IEEE Latin American Symposium on Circuits and Systems, LASCAS 2025 - Bento Goncalves, Brazil Duration: 25 Feb 2025 → 28 Feb 2025

Publication series

Name	2025 IEEE 16th Latin American Symposium on Circuits and Systems, LASCAS 2025 - Proceedings

Conference

Conference	16th IEEE Latin American Symposium on Circuits and Systems, LASCAS 2025
Country/Territory	Brazil
City	Bento Goncalves
Period	25/02/25 → 28/02/25

Bibliographical note

Publisher Copyright:
© 2025 IEEE.

Keywords

enhanced transconductance
high amplitude
oscillator
phase noise
voltage-control oscillator (VCO)

Access to Document

10.1109/LASCAS64004.2025.10966293

Cite this

Sau, A. S. W., Azzahra, H. A., Mauludin, M. F., & Kim, J. (2025). A High-Efficiency NRMGC-Based VCO with Enhanced Transconductance and Low Phase Noise. In 2025 IEEE 16th Latin American Symposium on Circuits and Systems, LASCAS 2025 - Proceedings (2025 IEEE 16th Latin American Symposium on Circuits and Systems, LASCAS 2025 - Proceedings). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/LASCAS64004.2025.10966293

Sau, Aulya Sholehah Wataawa ; Azzahra, Hapsah Aulia ; Mauludin, Muhammad Fakhri et al. / A High-Efficiency NRMGC-Based VCO with Enhanced Transconductance and Low Phase Noise. 2025 IEEE 16th Latin American Symposium on Circuits and Systems, LASCAS 2025 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2025. (2025 IEEE 16th Latin American Symposium on Circuits and Systems, LASCAS 2025 - Proceedings).

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title = "A High-Efficiency NRMGC-Based VCO with Enhanced Transconductance and Low Phase Noise",

abstract = "A negative resistance multi-gated circuit (NRMGC) integrated with an NMOS cross-coupled pair is proposed in this design. The topology incorporates four parallel PMOS transistors, with two configured for cross-coupled differential operation and the other two providing a feedback negative resistance. This configuration effectively reduces phase noise from high-order frequency currents through cancellation. The added NMOS cross-coupled pair enhances the transconductance and headroom of the NRMGC, addressing its limited voltage swing. Implemented using TSMC 65 nm LP technology, the proposed VCO achieves a tuning range of 18 GHz to 20.4 GHz. With a high voltage swing and robust startup, the design delivers exceptional phase noise performance at 110.4 dBc/Hz. Furthermore, it boasts an impressive Figure of Merit (FoM) of -190 dBc/Hz and consumes only 4.8 mW of power, highlighting its excellent overall performance.",

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doi = "10.1109/LASCAS64004.2025.10966293",

language = "English",

series = "2025 IEEE 16th Latin American Symposium on Circuits and Systems, LASCAS 2025 - Proceedings",

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Sau, ASW, Azzahra, HA, Mauludin, MF & Kim, J 2025, A High-Efficiency NRMGC-Based VCO with Enhanced Transconductance and Low Phase Noise. in 2025 IEEE 16th Latin American Symposium on Circuits and Systems, LASCAS 2025 - Proceedings. 2025 IEEE 16th Latin American Symposium on Circuits and Systems, LASCAS 2025 - Proceedings, Institute of Electrical and Electronics Engineers Inc., 16th IEEE Latin American Symposium on Circuits and Systems, LASCAS 2025, Bento Goncalves, Brazil, 25/02/25. https://doi.org/10.1109/LASCAS64004.2025.10966293

A High-Efficiency NRMGC-Based VCO with Enhanced Transconductance and Low Phase Noise. / Sau, Aulya Sholehah Wataawa; Azzahra, Hapsah Aulia; Mauludin, Muhammad Fakhri et al.
2025 IEEE 16th Latin American Symposium on Circuits and Systems, LASCAS 2025 - Proceedings. Institute of Electrical and Electronics Engineers Inc., 2025. (2025 IEEE 16th Latin American Symposium on Circuits and Systems, LASCAS 2025 - Proceedings).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Sau, Aulya Sholehah Wataawa

AU - Azzahra, Hapsah Aulia

AU - Mauludin, Muhammad Fakhri

AU - Kim, Jusung

PY - 2025

Y1 - 2025

N2 - A negative resistance multi-gated circuit (NRMGC) integrated with an NMOS cross-coupled pair is proposed in this design. The topology incorporates four parallel PMOS transistors, with two configured for cross-coupled differential operation and the other two providing a feedback negative resistance. This configuration effectively reduces phase noise from high-order frequency currents through cancellation. The added NMOS cross-coupled pair enhances the transconductance and headroom of the NRMGC, addressing its limited voltage swing. Implemented using TSMC 65 nm LP technology, the proposed VCO achieves a tuning range of 18 GHz to 20.4 GHz. With a high voltage swing and robust startup, the design delivers exceptional phase noise performance at 110.4 dBc/Hz. Furthermore, it boasts an impressive Figure of Merit (FoM) of -190 dBc/Hz and consumes only 4.8 mW of power, highlighting its excellent overall performance.

AB - A negative resistance multi-gated circuit (NRMGC) integrated with an NMOS cross-coupled pair is proposed in this design. The topology incorporates four parallel PMOS transistors, with two configured for cross-coupled differential operation and the other two providing a feedback negative resistance. This configuration effectively reduces phase noise from high-order frequency currents through cancellation. The added NMOS cross-coupled pair enhances the transconductance and headroom of the NRMGC, addressing its limited voltage swing. Implemented using TSMC 65 nm LP technology, the proposed VCO achieves a tuning range of 18 GHz to 20.4 GHz. With a high voltage swing and robust startup, the design delivers exceptional phase noise performance at 110.4 dBc/Hz. Furthermore, it boasts an impressive Figure of Merit (FoM) of -190 dBc/Hz and consumes only 4.8 mW of power, highlighting its excellent overall performance.

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KW - high amplitude

KW - oscillator

KW - phase noise

KW - voltage-control oscillator (VCO)

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DO - 10.1109/LASCAS64004.2025.10966293

M3 - Conference contribution

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BT - 2025 IEEE 16th Latin American Symposium on Circuits and Systems, LASCAS 2025 - Proceedings

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 16th IEEE Latin American Symposium on Circuits and Systems, LASCAS 2025

Y2 - 25 February 2025 through 28 February 2025

ER -

Sau ASW, Azzahra HA, Mauludin MF, Kim J. A High-Efficiency NRMGC-Based VCO with Enhanced Transconductance and Low Phase Noise. In 2025 IEEE 16th Latin American Symposium on Circuits and Systems, LASCAS 2025 - Proceedings. Institute of Electrical and Electronics Engineers Inc. 2025. (2025 IEEE 16th Latin American Symposium on Circuits and Systems, LASCAS 2025 - Proceedings). doi: 10.1109/LASCAS64004.2025.10966293

A High-Efficiency NRMGC-Based VCO with Enhanced Transconductance and Low Phase Noise

Abstract

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Bibliographical note

Keywords

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