M. R. Dar, N. A. Kant, F. A. Khanday, C. Psychalinos
{"title":"Fractional-order filter design for ultra-low frequency applications","authors":"M. R. Dar, N. A. Kant, F. A. Khanday, C. Psychalinos","doi":"10.1109/RTEICT.2016.7808129","DOIUrl":null,"url":null,"abstract":"The paper presents a novel scheme to implement fractional-order filters for ultra-low frequency applications. The scheme is based on the intrinsic property of the fractional-order filters that the pole frequency can be scaled down to sub-hertz by employing the order if the normal pole frequency of the filter is designed slightly less than one. This is in contrast to the scaling techniques employed in low-frequency integer-order filters where the impedance is scaled to decrease the overall capacitance required for low-frequency design. The functioning of the scheme has been demonstrated by an OTA-based low-pass filter example implemented with 0.35μm technology node at ± 1.2V supply voltage.","PeriodicalId":6527,"journal":{"name":"2016 IEEE International Conference on Recent Trends in Electronics, Information & Communication Technology (RTEICT)","volume":"9 1","pages":"1727-1730"},"PeriodicalIF":0.0000,"publicationDate":"2016-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"11","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2016 IEEE International Conference on Recent Trends in Electronics, Information & Communication Technology (RTEICT)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/RTEICT.2016.7808129","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 11
Abstract
The paper presents a novel scheme to implement fractional-order filters for ultra-low frequency applications. The scheme is based on the intrinsic property of the fractional-order filters that the pole frequency can be scaled down to sub-hertz by employing the order if the normal pole frequency of the filter is designed slightly less than one. This is in contrast to the scaling techniques employed in low-frequency integer-order filters where the impedance is scaled to decrease the overall capacitance required for low-frequency design. The functioning of the scheme has been demonstrated by an OTA-based low-pass filter example implemented with 0.35μm technology node at ± 1.2V supply voltage.