A 52% tuning range QVCO with a reduced noise coupling scheme and a minimum FOMT of 196dBc/Hz

Mohammad Elbadry; Sachin Kalia; Ramesh Harjani

doi:10.1109/CICC.2014.6946060

A 52% tuning range QVCO with a reduced noise coupling scheme and a minimum FOM_T of 196dBc/Hz

Mohammad Elbadry, Sachin Kalia, Ramesh Harjani

Electrical and Computer Engineering

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

5 Scopus citations

Abstract

A wide-tuning range QVCO with a novel complimentary-coupling scheme is presented. Two NMOS-only VCOs are coupled via complimentary PMOS injection transistors. This shifts the injection current away from the zero-crossings of the output voltage, thereby reducing the sensitivity of the VCO to injection noise, which results in significant phase-noise improvement. Phase-shift is achieved without frequency-dependent phase-shifting networks, allowing robust coupling over a wide tuning range. As a proof-of-concept, a prototype is designed in TSMC 65nm process with 4-bits of discrete tuning spanning the frequency range 4.6-7.8 GHz (52% tuning range). The prototype operates from 0.5V supply, with a power consumption ranging from 7.4mW-11mW, while achieving a minimum figure-of-merit (FOM) of 181.6dBc/Hz, and a minimum figure-of-merit with tuning-range (FOM_T) of 196dBc/Hz.

Original language	English (US)
Title of host publication	Proceedings of the IEEE 2014 Custom Integrated Circuits Conference, CICC 2014
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781479932863
DOIs	https://doi.org/10.1109/CICC.2014.6946060
State	Published - Nov 4 2014
Event	36th Annual Custom Integrated Circuits Conference - The Showcase for Integrated Circuit Design in the Heart of Silicon Valley, CICC 2014 - San Jose, United States Duration: Sep 15 2014 → Sep 17 2014

Publication series

Name	Proceedings of the IEEE 2014 Custom Integrated Circuits Conference, CICC 2014

Other

Other	36th Annual Custom Integrated Circuits Conference - The Showcase for Integrated Circuit Design in the Heart of Silicon Valley, CICC 2014
Country/Territory	United States
City	San Jose
Period	9/15/14 → 9/17/14

Access

10.1109/CICC.2014.6946060

Cite this

Elbadry, M., Kalia, S., & Harjani, R. (2014). A 52% tuning range QVCO with a reduced noise coupling scheme and a minimum FOM_T of 196dBc/Hz. In Proceedings of the IEEE 2014 Custom Integrated Circuits Conference, CICC 2014 [6946060] (Proceedings of the IEEE 2014 Custom Integrated Circuits Conference, CICC 2014). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CICC.2014.6946060

A 52% tuning range QVCO with a reduced noise coupling scheme and a minimum FOM_T of 196dBc/Hz. / Elbadry, Mohammad; Kalia, Sachin; Harjani, Ramesh.

Proceedings of the IEEE 2014 Custom Integrated Circuits Conference, CICC 2014. Institute of Electrical and Electronics Engineers Inc., 2014. 6946060 (Proceedings of the IEEE 2014 Custom Integrated Circuits Conference, CICC 2014).

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

Elbadry, M, Kalia, S & Harjani, R 2014, A 52% tuning range QVCO with a reduced noise coupling scheme and a minimum FOM_T of 196dBc/Hz. in Proceedings of the IEEE 2014 Custom Integrated Circuits Conference, CICC 2014., 6946060, Proceedings of the IEEE 2014 Custom Integrated Circuits Conference, CICC 2014, Institute of Electrical and Electronics Engineers Inc., 36th Annual Custom Integrated Circuits Conference - The Showcase for Integrated Circuit Design in the Heart of Silicon Valley, CICC 2014, San Jose, United States, 9/15/14. https://doi.org/10.1109/CICC.2014.6946060

Elbadry M, Kalia S, Harjani R. A 52% tuning range QVCO with a reduced noise coupling scheme and a minimum FOM_T of 196dBc/Hz. In Proceedings of the IEEE 2014 Custom Integrated Circuits Conference, CICC 2014. Institute of Electrical and Electronics Engineers Inc. 2014. 6946060. (Proceedings of the IEEE 2014 Custom Integrated Circuits Conference, CICC 2014). https://doi.org/10.1109/CICC.2014.6946060

Elbadry, Mohammad ; Kalia, Sachin ; Harjani, Ramesh. / A 52% tuning range QVCO with a reduced noise coupling scheme and a minimum FOM_T of 196dBc/Hz. Proceedings of the IEEE 2014 Custom Integrated Circuits Conference, CICC 2014. Institute of Electrical and Electronics Engineers Inc., 2014. (Proceedings of the IEEE 2014 Custom Integrated Circuits Conference, CICC 2014).

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abstract = "A wide-tuning range QVCO with a novel complimentary-coupling scheme is presented. Two NMOS-only VCOs are coupled via complimentary PMOS injection transistors. This shifts the injection current away from the zero-crossings of the output voltage, thereby reducing the sensitivity of the VCO to injection noise, which results in significant phase-noise improvement. Phase-shift is achieved without frequency-dependent phase-shifting networks, allowing robust coupling over a wide tuning range. As a proof-of-concept, a prototype is designed in TSMC 65nm process with 4-bits of discrete tuning spanning the frequency range 4.6-7.8 GHz (52% tuning range). The prototype operates from 0.5V supply, with a power consumption ranging from 7.4mW-11mW, while achieving a minimum figure-of-merit (FOM) of 181.6dBc/Hz, and a minimum figure-of-merit with tuning-range (FOMT) of 196dBc/Hz.",

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