{"title":"A Nanopower 4th-Order Chebyshev Lowpass Filter For ECG Detection System","authors":"P. Pawarangkoon","doi":"10.1109/APCCAS.2018.8605626","DOIUrl":null,"url":null,"abstract":"This paper presents a nanopower CMOS 4th-order Chebyshev lowpass filter. The proposed circuit is based on cascading of two 2nd-order sections. Each section is composed of six transistors and two grounded capacitors. The operation of the proposed circuit is verified by simulation using 0.18-μm CMOS parameters. The simulation results show that the proposed filter can operate at a 0.6 V supply and the cutoff frequency of the circuit can be adjusted from 50 Hz to 300 Hz covering the entire frequency range of ECG signals. At 150 Hz cutoff frequency, the proposed filter consumes 0.55 nW while THD of 1.01 % is obtained.","PeriodicalId":325141,"journal":{"name":"2018 IEEE Asia Pacific Conference on Circuits and Systems (APCCAS)","volume":"25 5","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2018-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2018 IEEE Asia Pacific Conference on Circuits and Systems (APCCAS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/APCCAS.2018.8605626","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
This paper presents a nanopower CMOS 4th-order Chebyshev lowpass filter. The proposed circuit is based on cascading of two 2nd-order sections. Each section is composed of six transistors and two grounded capacitors. The operation of the proposed circuit is verified by simulation using 0.18-μm CMOS parameters. The simulation results show that the proposed filter can operate at a 0.6 V supply and the cutoff frequency of the circuit can be adjusted from 50 Hz to 300 Hz covering the entire frequency range of ECG signals. At 150 Hz cutoff frequency, the proposed filter consumes 0.55 nW while THD of 1.01 % is obtained.
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