NDLI: Frequency modulation via a biological signal using a controlled piezoelectric ceramic

Content Provider	IEEE Xplore Digital Library
Author	Gutierrez-Begovich, D.A. Suaste-Gomez, E.
Copyright Year	2009
Description	Author affiliation: Electrical Engineering Department, Bioelectronics Section, CINVESTAV México, IPN Av. No. 2508 San Pedro Zacatenco, D.F. México (Gutierrez-Begovich, D.A.; Suaste-Gomez, E.)
Abstract	When an AC voltage is applied to a controlled piezoelectric ceramic (CPC) changes in its dielectric constant are obtained, that is to say in its capacitance. These new devices are made of barium titanate (BaTiO3) with a platinum implant. To excite the implant of the CPC with a voltage gives a variation in dielectric constant between the upper and lower walls of the ceramic. Taking advantage of this voltage dependant capacitance characteristic of the CPC a variable frequency oscillator can be constructed. The excitation signal applied to to demonstrate this effect was the heart beat as an electrocardiographic signal, which created a frequency modulated output signal. Demodulating the FM output returned the heartbeat. Clearly, the excitation source applied to the platinum implant is not restricted to the cardiac pulse, the technique can be used in different applications, opening a window of opportunity in the field of biomedical engineering and research.
Starting Page	7
Ending Page	7
File Size	77773
Page Count	1
File Format	PDF
ISBN	9781424436682
DOI	10.1109/PAHCE.2009.5158350
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2009-03-16
Publisher Place	Mexico
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Frequency modulation Dielectric constant Barium Heart beat Platinum Implants Capacitance Ceramics Biological control systems Voltage control
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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