{"title":"Low-power quadrature VCO design for medical implant communication service","authors":"Jeong-Ki Kim, Jihoon Jeong, D. Ha, Hyung-Soo Lee","doi":"10.1109/DDECS.2011.5783122","DOIUrl":null,"url":null,"abstract":"This paper presents two different implementations of a low-power quadrature frequency source generator for medical implant communication service (MICS) applications. The first circuit uses a current-reuse VCO running at double the target frequency followed by a divide-by-two frequency divider. The circuit dissipates only 230 µW and achieves low phase noise of −127 dBc/Hz@1MHz. The second one adopts a parallel-coupling scheme to combine two current-reuse VCOs (P-QVCO). The circuit exhibits a moderate power consumption of 960 µW and achieves very low phase noise of −138 dBc/Hz@1MHz.","PeriodicalId":231389,"journal":{"name":"14th IEEE International Symposium on Design and Diagnostics of Electronic Circuits and Systems","volume":"34 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2011-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"14th IEEE International Symposium on Design and Diagnostics of Electronic Circuits and Systems","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/DDECS.2011.5783122","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
This paper presents two different implementations of a low-power quadrature frequency source generator for medical implant communication service (MICS) applications. The first circuit uses a current-reuse VCO running at double the target frequency followed by a divide-by-two frequency divider. The circuit dissipates only 230 µW and achieves low phase noise of −127 dBc/Hz@1MHz. The second one adopts a parallel-coupling scheme to combine two current-reuse VCOs (P-QVCO). The circuit exhibits a moderate power consumption of 960 µW and achieves very low phase noise of −138 dBc/Hz@1MHz.
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