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Equivalent Circuit Model Viewed From Receiver Side in Human Body Communication
IEEE Transactions on Biomedical Circuits and Systems
|May 29, 2019
Summary
This study models human body communication (HBC) signal transmission. Key parameters like equivalent signal source voltage and output impedance were analyzed, revealing their relationship with physical distances and receiver ground size.
Area of Science:
- Electrical Engineering
- Biomedical Engineering
- Signal Processing
Background:
- Human Body Communication (HBC) utilizes the body as a transmission medium.
- Understanding signal source voltage and output impedance is crucial for HBC analysis and receiver design.
- Existing HBC models often differ in ground electrode configuration.
Purpose of the Study:
- To construct an equivalent circuit model for HBC signal transmission from an on-body transmitter to an off-body receiver.
- To analyze the influence of physical parameters on transmission characteristics.
- To investigate a novel HBC configuration with a grounded transmitter electrode.
Main Methods:
- Developed an equivalent circuit model for on-body to off-body HBC.
- Configured a transmitter with its ground electrode in contact with the human body.
- Evaluated received signal voltage in relation to electrode distances and receiver ground size.
Main Results:
- Transmitter-receiver distance and transmitter electrode spacing independently affect equivalent signal source voltage.
- Receiver ground size influences capacitive coupling and is related to equivalent output impedance.
- The grounded transmitter configuration shows distinct transmission characteristics.
Conclusions:
- The developed equivalent circuit model accurately represents the studied HBC configuration.
- Physical parameters significantly impact HBC signal transmission characteristics.
- This research provides insights for designing efficient HBC systems with grounded transmitters.
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