A Wideband Fast Start-Up Multi-Core VCO With Auto-Frequency Control in 0.18 μm CMOS

A 2.8 – 4.6 GHz wideband multi-core VCO with a fast start-up scheme is presented in this brief. The proposed multi-core VCO uses a successive approximation register based auto frequency control (SAR-AFC) loop with the embedded 2/3 Judge to ensure the desired output frequency. To benefit a...

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Autores principales: Yao Li, Bo Zhou, Zuhang Wang
Formato: article
Lenguaje:EN
Publicado: IEEE 2021
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Acceso en línea:https://doaj.org/article/bf20f9c7f7904f0f893e0ed4f713a8fe
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spelling oai:doaj.org-article:bf20f9c7f7904f0f893e0ed4f713a8fe2021-11-18T00:02:57ZA Wideband Fast Start-Up Multi-Core VCO With Auto-Frequency Control in 0.18 &#x03BC;m CMOS2169-353610.1109/ACCESS.2021.3125523https://doaj.org/article/bf20f9c7f7904f0f893e0ed4f713a8fe2021-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9600892/https://doaj.org/toc/2169-3536A 2.8 &#x2013; 4.6 GHz wideband multi-core VCO with a fast start-up scheme is presented in this brief. The proposed multi-core VCO uses a successive approximation register based auto frequency control (SAR-AFC) loop with the embedded 2/3 Judge to ensure the desired output frequency. To benefit a wider application, the VCO provides radio and low frequency outputs. A prototype of the multi-core VCO is implemented in 180-nm CMOS, and consumes 20 mA from a 3.3-V supply voltage with an active area of 4.8 mm<sup>2</sup>. Measured results indicate that the multi-core LC VCO is capable of providing the phase noise of &#x2212;120 dBc/Hz at 1-MHz offset from 4.6 GHz frequency. One of the attractive merits from the proposed LC VCO is that the response time could be saved 45&#x0025; over the traditional VCO architecture.Yao LiBo ZhouZuhang WangIEEEarticleFast start-upvoltage-controlled oscillator (VCO)multi-corewidebandauto-frequency control (AFC)Electrical engineering. Electronics. Nuclear engineeringTK1-9971ENIEEE Access, Vol 9, Pp 149807-149813 (2021)
institution DOAJ
collection DOAJ
language EN
topic Fast start-up
voltage-controlled oscillator (VCO)
multi-core
wideband
auto-frequency control (AFC)
Electrical engineering. Electronics. Nuclear engineering
TK1-9971
spellingShingle Fast start-up
voltage-controlled oscillator (VCO)
multi-core
wideband
auto-frequency control (AFC)
Electrical engineering. Electronics. Nuclear engineering
TK1-9971
Yao Li
Bo Zhou
Zuhang Wang
A Wideband Fast Start-Up Multi-Core VCO With Auto-Frequency Control in 0.18 &#x03BC;m CMOS
description A 2.8 &#x2013; 4.6 GHz wideband multi-core VCO with a fast start-up scheme is presented in this brief. The proposed multi-core VCO uses a successive approximation register based auto frequency control (SAR-AFC) loop with the embedded 2/3 Judge to ensure the desired output frequency. To benefit a wider application, the VCO provides radio and low frequency outputs. A prototype of the multi-core VCO is implemented in 180-nm CMOS, and consumes 20 mA from a 3.3-V supply voltage with an active area of 4.8 mm<sup>2</sup>. Measured results indicate that the multi-core LC VCO is capable of providing the phase noise of &#x2212;120 dBc/Hz at 1-MHz offset from 4.6 GHz frequency. One of the attractive merits from the proposed LC VCO is that the response time could be saved 45&#x0025; over the traditional VCO architecture.
format article
author Yao Li
Bo Zhou
Zuhang Wang
author_facet Yao Li
Bo Zhou
Zuhang Wang
author_sort Yao Li
title A Wideband Fast Start-Up Multi-Core VCO With Auto-Frequency Control in 0.18 &#x03BC;m CMOS
title_short A Wideband Fast Start-Up Multi-Core VCO With Auto-Frequency Control in 0.18 &#x03BC;m CMOS
title_full A Wideband Fast Start-Up Multi-Core VCO With Auto-Frequency Control in 0.18 &#x03BC;m CMOS
title_fullStr A Wideband Fast Start-Up Multi-Core VCO With Auto-Frequency Control in 0.18 &#x03BC;m CMOS
title_full_unstemmed A Wideband Fast Start-Up Multi-Core VCO With Auto-Frequency Control in 0.18 &#x03BC;m CMOS
title_sort wideband fast start-up multi-core vco with auto-frequency control in 0.18 &#x03bc;m cmos
publisher IEEE
publishDate 2021
url https://doaj.org/article/bf20f9c7f7904f0f893e0ed4f713a8fe
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