Characteristics of the Howland current source for Bioelectric Impedance Measurements Systems
Publish place: 20th Iranian Conference on Biomedical Engineering(ICBME2013)
Publish Year: 1392
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
ICBME20_069
تاریخ نمایه سازی: 25 فروردین 1394
Abstract:
In the development of bioelectric impedance measuring systems, design of a stable current source with broad bandwidth and high output impedance is an important consideration.Howland circuit is a well known high performance, voltage controlled current source which can provide high outputimpedance as well as high frequency bandwidth. This paper presents a detailed study of Howland current source by considering the non-ideal characteristics of the components. Twodifferent forms of Howland current source are compared and resulted relationship were evaluated by simulations. The resultsof this study facilitate the design of Howland circuit for bioelectric impedance measurement systems
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Authors
Hassan Yazdanian
Department of Biomedical Engineering University of Isfahan Isfahan, Iran
Mohsen Mosayebi Samani
Department of Biomedical Engineering Tarbiat Modares University Tehran, Iran
Amin Mahanm
Department of Biomedical Engineering University of Isfahan Isfahan, Iran