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...
| Main Authors: | , , , , |
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| Format: | Journal Article |
| Language: | English |
| Published: |
2016
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| Online Access: | https://hdl.handle.net/10356/82928 http://hdl.handle.net/10220/40369 |
| _version_ | 1826116906313056256 |
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| author | Sun, Junyi Boon, Chirn Chye Yi, Xiang Lim, Wei Meng Meng, Fanyi |
| 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 |
| author_sort | Sun, Junyi |
| collection | NTU |
| 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. |
| first_indexed | 2024-10-01T04:19:05Z |
| format | Journal Article |
| id | ntu-10356/82928 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T04:19:05Z |
| publishDate | 2016 |
| record_format | dspace |
| spelling | ntu-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 |
| 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 |
| title | 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_short | 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 |
| topic | Wideband Start-up Evenly distributed auxiliary cross-coupled pairs K-band CMOS VCO |
| url | https://hdl.handle.net/10356/82928 http://hdl.handle.net/10220/40369 |
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