{"title":"采用 65 纳米 CMOS 的 11.3-16.6-GHz VCO,具有构造性开关磁耦合功能","authors":"Yuetong Lyu;Changwenquan Song;Pei Qin;Liang Wu","doi":"10.1109/JETCAS.2023.3344510","DOIUrl":null,"url":null,"abstract":"Conventional transformer-based magnetic tuning has demonstrated dual-band or even multi-band operation for voltage-controlled oscillators (VCOs). However, the destructive magnetic coupling employed introduces implicit loss to the transformer thus degrading its quality factor (Q), and achieves a continuous frequency coverage resulting in inferior performance. To address this issue, this paper proposes a constructive switched magnetic coupling (CSMC) technique, realizing dual-band operation with the Q improvement into one band due to the in-phase coupling and the explicit switch. For validation, a transformer employing the CSMC technique is designed and deployed in a dual-band VCO design. Fabricated in a 65-nm CMOS process, the VCO is measured with an oscillation frequency range of 37.8%, from 11.3 to 16.6 GHz, while consuming 2.5-mW from a 0.65-V voltage supply. Within the entire frequency coverage, the measured phase noise ranges from −129.6 to −123.7 at 10-MHz offset, resulting in FoM of 186-192.1 dBc/Hz. The core area of the chip is \n<inline-formula> <tex-math>$0.43\\times 0.25$ </tex-math></inline-formula>\n mm2 excluding pads.","PeriodicalId":48827,"journal":{"name":"IEEE Journal on Emerging and Selected Topics in Circuits and Systems","volume":null,"pages":null},"PeriodicalIF":3.7000,"publicationDate":"2023-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A 11.3–16.6-GHz VCO With Constructive Switched Magnetic Coupling in 65-nm CMOS\",\"authors\":\"Yuetong Lyu;Changwenquan Song;Pei Qin;Liang Wu\",\"doi\":\"10.1109/JETCAS.2023.3344510\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Conventional transformer-based magnetic tuning has demonstrated dual-band or even multi-band operation for voltage-controlled oscillators (VCOs). However, the destructive magnetic coupling employed introduces implicit loss to the transformer thus degrading its quality factor (Q), and achieves a continuous frequency coverage resulting in inferior performance. To address this issue, this paper proposes a constructive switched magnetic coupling (CSMC) technique, realizing dual-band operation with the Q improvement into one band due to the in-phase coupling and the explicit switch. For validation, a transformer employing the CSMC technique is designed and deployed in a dual-band VCO design. Fabricated in a 65-nm CMOS process, the VCO is measured with an oscillation frequency range of 37.8%, from 11.3 to 16.6 GHz, while consuming 2.5-mW from a 0.65-V voltage supply. Within the entire frequency coverage, the measured phase noise ranges from −129.6 to −123.7 at 10-MHz offset, resulting in FoM of 186-192.1 dBc/Hz. The core area of the chip is \\n<inline-formula> <tex-math>$0.43\\\\times 0.25$ </tex-math></inline-formula>\\n mm2 excluding pads.\",\"PeriodicalId\":48827,\"journal\":{\"name\":\"IEEE Journal on Emerging and Selected Topics in Circuits and Systems\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":3.7000,\"publicationDate\":\"2023-12-18\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"IEEE Journal on Emerging and Selected Topics in Circuits and Systems\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://ieeexplore.ieee.org/document/10365140/\",\"RegionNum\":2,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"ENGINEERING, ELECTRICAL & ELECTRONIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Journal on Emerging and Selected Topics in Circuits and Systems","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/10365140/","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
A 11.3–16.6-GHz VCO With Constructive Switched Magnetic Coupling in 65-nm CMOS
Conventional transformer-based magnetic tuning has demonstrated dual-band or even multi-band operation for voltage-controlled oscillators (VCOs). However, the destructive magnetic coupling employed introduces implicit loss to the transformer thus degrading its quality factor (Q), and achieves a continuous frequency coverage resulting in inferior performance. To address this issue, this paper proposes a constructive switched magnetic coupling (CSMC) technique, realizing dual-band operation with the Q improvement into one band due to the in-phase coupling and the explicit switch. For validation, a transformer employing the CSMC technique is designed and deployed in a dual-band VCO design. Fabricated in a 65-nm CMOS process, the VCO is measured with an oscillation frequency range of 37.8%, from 11.3 to 16.6 GHz, while consuming 2.5-mW from a 0.65-V voltage supply. Within the entire frequency coverage, the measured phase noise ranges from −129.6 to −123.7 at 10-MHz offset, resulting in FoM of 186-192.1 dBc/Hz. The core area of the chip is
$0.43\times 0.25$
mm2 excluding pads.
期刊介绍:
The IEEE Journal on Emerging and Selected Topics in Circuits and Systems is published quarterly and solicits, with particular emphasis on emerging areas, special issues on topics that cover the entire scope of the IEEE Circuits and Systems (CAS) Society, namely the theory, analysis, design, tools, and implementation of circuits and systems, spanning their theoretical foundations, applications, and architectures for signal and information processing.