A 8-14 GHz varactorless current controlled LC oscillator in 16nm CMOS technology

Somnath Kundu; Vassili Kireev; Chris H. Kim

doi:10.1109/MWSCAS.2015.7282096

A 8-14 GHz varactorless current controlled LC oscillator in 16nm CMOS technology

Somnath Kundu, Vassili Kireev, Chris H. Kim

Electrical and Computer Engineering

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

Abstract

This paper presents a new concept of fine frequency tuning in a differential LC oscillator by injecting quadrature phase shifted current into the tank that can replace the use of a conventional varactor, eliminating all limitations associated with it, such as specific bias voltage requirement, limited Q-factor, technology/process uncertainties, model accuracy etc. Wide tuning range of 8-14 GHz is achieved by 5-bit switched capacitor array distributed across the exit legs of the inductor. The circuit is implemented in 16nm CMOS technology. Oscillator core consumes 2.85mW power from 0.9V supply at 10GHz frequency for 400mV single-ended swing. Phase noise is - 108dBc/Hz at 1MHz offset for no tuning current injection.

Original language	English (US)
Title of host publication	IEEE 58th International Midwest Symposium on Circuits and Systems
Subtitle of host publication	Climbing to New Heights, MWSCAS 2015 - Conference Proceedings
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781467365574
DOIs	https://doi.org/10.1109/MWSCAS.2015.7282096
State	Published - Sep 28 2015
Event	58th IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2015 - Fort Collins, United States Duration: Aug 2 2015 → Aug 5 2015

Publication series

Name	Midwest Symposium on Circuits and Systems
Volume	2015-September
ISSN (Print)	1548-3746

Other

Other	58th IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2015
Country/Territory	United States
City	Fort Collins
Period	8/2/15 → 8/5/15

Bibliographical note

Publisher Copyright:
© 2015 IEEE.

Keywords

LC oscillators
common-mode feedback
current controlled oscillators
phase noise

Publisher link

10.1109/MWSCAS.2015.7282096

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Kundu, S., Kireev, V., & Kim, C. H. (2015). A 8-14 GHz varactorless current controlled LC oscillator in 16nm CMOS technology. In IEEE 58th International Midwest Symposium on Circuits and Systems: Climbing to New Heights, MWSCAS 2015 - Conference Proceedings Article 7282096 (Midwest Symposium on Circuits and Systems; Vol. 2015-September). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/MWSCAS.2015.7282096

A 8-14 GHz varactorless current controlled LC oscillator in 16nm CMOS technology. / Kundu, Somnath; Kireev, Vassili; Kim, Chris H.
IEEE 58th International Midwest Symposium on Circuits and Systems: Climbing to New Heights, MWSCAS 2015 - Conference Proceedings. Institute of Electrical and Electronics Engineers Inc., 2015. 7282096 (Midwest Symposium on Circuits and Systems; Vol. 2015-September).

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

Kundu, S, Kireev, V & Kim, CH 2015, A 8-14 GHz varactorless current controlled LC oscillator in 16nm CMOS technology. in IEEE 58th International Midwest Symposium on Circuits and Systems: Climbing to New Heights, MWSCAS 2015 - Conference Proceedings., 7282096, Midwest Symposium on Circuits and Systems, vol. 2015-September, Institute of Electrical and Electronics Engineers Inc., 58th IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2015, Fort Collins, United States, 8/2/15. https://doi.org/10.1109/MWSCAS.2015.7282096

Kundu S, Kireev V, Kim CH. A 8-14 GHz varactorless current controlled LC oscillator in 16nm CMOS technology. In IEEE 58th International Midwest Symposium on Circuits and Systems: Climbing to New Heights, MWSCAS 2015 - Conference Proceedings. Institute of Electrical and Electronics Engineers Inc. 2015. 7282096. (Midwest Symposium on Circuits and Systems). doi: 10.1109/MWSCAS.2015.7282096

Kundu, Somnath ; Kireev, Vassili ; Kim, Chris H. / A 8-14 GHz varactorless current controlled LC oscillator in 16nm CMOS technology. IEEE 58th International Midwest Symposium on Circuits and Systems: Climbing to New Heights, MWSCAS 2015 - Conference Proceedings. Institute of Electrical and Electronics Engineers Inc., 2015. (Midwest Symposium on Circuits and Systems).

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abstract = "This paper presents a new concept of fine frequency tuning in a differential LC oscillator by injecting quadrature phase shifted current into the tank that can replace the use of a conventional varactor, eliminating all limitations associated with it, such as specific bias voltage requirement, limited Q-factor, technology/process uncertainties, model accuracy etc. Wide tuning range of 8-14 GHz is achieved by 5-bit switched capacitor array distributed across the exit legs of the inductor. The circuit is implemented in 16nm CMOS technology. Oscillator core consumes 2.85mW power from 0.9V supply at 10GHz frequency for 400mV single-ended swing. Phase noise is - 108dBc/Hz at 1MHz offset for no tuning current injection.",

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N2 - This paper presents a new concept of fine frequency tuning in a differential LC oscillator by injecting quadrature phase shifted current into the tank that can replace the use of a conventional varactor, eliminating all limitations associated with it, such as specific bias voltage requirement, limited Q-factor, technology/process uncertainties, model accuracy etc. Wide tuning range of 8-14 GHz is achieved by 5-bit switched capacitor array distributed across the exit legs of the inductor. The circuit is implemented in 16nm CMOS technology. Oscillator core consumes 2.85mW power from 0.9V supply at 10GHz frequency for 400mV single-ended swing. Phase noise is - 108dBc/Hz at 1MHz offset for no tuning current injection.

AB - This paper presents a new concept of fine frequency tuning in a differential LC oscillator by injecting quadrature phase shifted current into the tank that can replace the use of a conventional varactor, eliminating all limitations associated with it, such as specific bias voltage requirement, limited Q-factor, technology/process uncertainties, model accuracy etc. Wide tuning range of 8-14 GHz is achieved by 5-bit switched capacitor array distributed across the exit legs of the inductor. The circuit is implemented in 16nm CMOS technology. Oscillator core consumes 2.85mW power from 0.9V supply at 10GHz frequency for 400mV single-ended swing. Phase noise is - 108dBc/Hz at 1MHz offset for no tuning current injection.

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A 8-14 GHz varactorless current controlled LC oscillator in 16nm CMOS technology

Abstract

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Keywords

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