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Presenter: Hsuan-Han ChiangAdviser: Dr. Hung-Chi Yang

Date: 11.17.2010

Single-Arm Electrode for wireless ECG signal transmission

system(part 3)

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Results

3D Fields measurement

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Results

The SAR value distribution curve that simulate the antenna

in the tissue.

The SAR value distribution curve that immersed into the

concave of FR4 substrate

Average SAR=441 W/Kg Average SAR=377 W/Kg

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Results

ECG circuit & Transmitter Circuit

ECG circuit Transmitter Circuit

Zigbee Module

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Results

LabVIEW display interface

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Results

The FPC of electrode Electrode’s position on left upper arm

※ FPC-Flexible Print Circuit(軟性基板 )

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Results

ECG measure on left upper arm (a) from ECG circuit(b) signal process by MATLAB

ECG measure on right upper arm(a) from ECG circuit(b) signal process by MATLAB

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Results

ECG measure on left elbow(a) from ECG circuit(b) signal process by MATLAB

ECG measure on right elbow(a) from ECG circuit(b) signal process by MATLAB

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Results

ECG measure on left lower arm(a) from ECG circuit(b) signal process by MATLAB

ECG measure on right lower arm(a) from ECG circuit(b) signal process by MATLAB

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Conclusions

The electrode antenna have been accomp-lished in the ISM band .

ECG gelatin can separated the proposed antenna pattern from the human skin. Therefore, the SAR will be decreased.

It is possible to measure the ECG signal with the FPC of electrode attached to the arm .

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Future Work

Improve the resonant frequency Enhance the antenna radiation efficiency Improve ECG circuit Design of electrode antenna using Flexible Print

Circuit

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References[1] Angelopoulos E S, Anastopoulos A Z, Kaklamani D I, et al.”Circular and elliptical 　　　 CPW-fed slot and microstrip-fed antennas for ultra-wideband applications”. IEEE 　　　 Antennas and Wireless Propagation Letters, 2006, 5: 294–297.[2] 　 　　 H. C. Liu, T. S. Horng and N. G. Alexopoulous, “ Radiation of Printed Antennas 　　　　 with a Coplanar Waveguide Feed,“ IEEE Trans. Antennas Proporgat., vol. 10, pp. 　　　　 1143-1148, 1995.[3] 　 　Evangelos S. Angelopoulos, Argiris Z. Anastopoulos, Dimitra I. Kaklamani,” Circular and Elliptical CPW-Fed Slot and Microstrip-Fed Antennas for Ultrawideband Applications”, IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, VOL. 5, 2006[4] CHENG P. WEN,, “Coplanar Waveguide: A Surface Strip Transmission Line Suitable 　　　 for Nonreciprocal Gyromagnetic Device Applications,” IEEE Transactions On 　　 Microwave Theory And Techniques, Vol. MTT-17, NO. 12, December 1969.[5] 　 Shantz, H. G “Planar Elliptical Element Ultra-Wideband Dipole Antenna”, In:IEEE 　　　 APS/URSI Conference,2002.[6] T.Maruyama‘,M.Makikawa’,’’ ECG Measurement Using Capacitive Coupling Electrodes for Man-Machine Emotional Communication ”, IEEE/ICME International Conference on Complex Medical Engineering ,2007.[7] http://library.med.utah.edu/kw/ecg/ecg_outline/Lesson1/lead_dia.html

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Thank you For your attention