Design and analysis of a K-band wideband voltage-controlled oscillator with robust start-up and frequency boost

This study presents a K-band differential voltage-controlled oscillator (VCO) with robust start-up. A hybrid technique that combines open-loop digitally controlled tail current with switchable auxiliary cross-coupled pairs (ACCPs) is proposed to ensure robust start-up for wideband operation. Compare...

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Main Authors: Sun, Junyi, Boon, Chirn Chye, Yi, Xiang, Lim, Wei Meng, Meng, Fanyi
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2016
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Online Access:https://hdl.handle.net/10356/82928
http://hdl.handle.net/10220/40369
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-829282020-03-07T13:57:24Z Design and analysis of a K-band wideband voltage-controlled oscillator with robust start-up and frequency boost Sun, Junyi Boon, Chirn Chye Yi, Xiang Lim, Wei Meng Meng, Fanyi School of Electrical and Electronic Engineering Wideband Start-up Evenly distributed auxiliary cross-coupled pairs K-band CMOS VCO This study presents a K-band differential voltage-controlled oscillator (VCO) with robust start-up. A hybrid technique that combines open-loop digitally controlled tail current with switchable auxiliary cross-coupled pairs (ACCPs) is proposed to ensure robust start-up for wideband operation. Compared with prior closed-loop current controlling method, the proposed technique does not suffer from phase-noise degradation. Furthermore, by evenly distributing the ACCPs, transistors with smaller size are allowed to achieve the same start-up condition, which leads to frequency boost and phase-noise improvement. Implemented in 0.18 μm complementary metal-oxide-semiconductor technology, the VCO achieves a wide-frequency tuning range of 21.4-26.29 GHz (20.5%) and a low phase noise of -108.8 dBc/Hz at 1 MHz offset from 25.8 GHz carrier frequency. At 1.1 V power supply, the power consumption of the core circuit is 7.9-11.4 mW across the entire output frequency range. MOE (Min. of Education, S’pore) Accepted version 2016-04-01T03:42:57Z 2019-12-06T15:08:25Z 2016-04-01T03:42:57Z 2019-12-06T15:08:25Z 2015 Journal Article Sun, J., Boon, C. C., Yi, X., Lim, W. M., & Meng, F. (2015). Design and analysis of a K-band wideband voltage-controlled oscillator with robust start-up and frequency boost. IET Microwaves, Antennas & Propagation, 9(14), 1623-1631. 1751-8725 https://hdl.handle.net/10356/82928 http://hdl.handle.net/10220/40369 10.1049/iet-map.2014.0825 en IET Microwaves, Antennas & Propagation © 2015 The Institution of Engineering and Technology. This is the author created version of a work that has been peer reviewed and accepted for publication by IET Microwaves, Antennas & Propagation, The Institution of Engineering and Technology. It incorporates referee’s comments but changes resulting from the publishing process, such as copyediting, structural formatting, may not be reflected in this document. The published version is available at: [http://dx.doi.org/10.1049/iet-map.2014.0825]. 13 p. application/pdf
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic Wideband
Start-up
Evenly distributed auxiliary cross-coupled pairs
K-band
CMOS VCO
spellingShingle Wideband
Start-up
Evenly distributed auxiliary cross-coupled pairs
K-band
CMOS VCO
Sun, Junyi
Boon, Chirn Chye
Yi, Xiang
Lim, Wei Meng
Meng, Fanyi
Design and analysis of a K-band wideband voltage-controlled oscillator with robust start-up and frequency boost
description This study presents a K-band differential voltage-controlled oscillator (VCO) with robust start-up. A hybrid technique that combines open-loop digitally controlled tail current with switchable auxiliary cross-coupled pairs (ACCPs) is proposed to ensure robust start-up for wideband operation. Compared with prior closed-loop current controlling method, the proposed technique does not suffer from phase-noise degradation. Furthermore, by evenly distributing the ACCPs, transistors with smaller size are allowed to achieve the same start-up condition, which leads to frequency boost and phase-noise improvement. Implemented in 0.18 μm complementary metal-oxide-semiconductor technology, the VCO achieves a wide-frequency tuning range of 21.4-26.29 GHz (20.5%) and a low phase noise of -108.8 dBc/Hz at 1 MHz offset from 25.8 GHz carrier frequency. At 1.1 V power supply, the power consumption of the core circuit is 7.9-11.4 mW across the entire output frequency range.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Sun, Junyi
Boon, Chirn Chye
Yi, Xiang
Lim, Wei Meng
Meng, Fanyi
format Article
author Sun, Junyi
Boon, Chirn Chye
Yi, Xiang
Lim, Wei Meng
Meng, Fanyi
author_sort Sun, Junyi
title Design and analysis of a K-band wideband voltage-controlled oscillator with robust start-up and frequency boost
title_short Design and analysis of a K-band wideband voltage-controlled oscillator with robust start-up and frequency boost
title_full Design and analysis of a K-band wideband voltage-controlled oscillator with robust start-up and frequency boost
title_fullStr Design and analysis of a K-band wideband voltage-controlled oscillator with robust start-up and frequency boost
title_full_unstemmed Design and analysis of a K-band wideband voltage-controlled oscillator with robust start-up and frequency boost
title_sort design and analysis of a k-band wideband voltage-controlled oscillator with robust start-up and frequency boost
publishDate 2016
url https://hdl.handle.net/10356/82928
http://hdl.handle.net/10220/40369
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