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Prototype analysis of a low-power, small-scale wearable medical device Cover

Prototype analysis of a low-power, small-scale wearable medical device

Journal of Electrical Bioimpedance
Volume 15 (2024): Issue 1 (January 2024)
By: Pablo Dutra da Silva and  Pedro Bertemes Filho  
Open Access
|Jan 2025

Figures & Tables

Figure 1:

System diagram for the current device under development.
System diagram for the current device under development.

Figure 2:

System diagram for the current device under development.
System diagram for the current device under development.

Figure 3:

Enhanced Howland Current source Schematic.
Enhanced Howland Current source Schematic.

Figure 4:

Instrumentation Amplifier Schematic.
Instrumentation Amplifier Schematic.

Figure 5:

DC simulation results for the low power supply design.
DC simulation results for the low power supply design.

Figure 6:

Output impedance versus frequency in AC analysis.
Output impedance versus frequency in AC analysis.

Figure 7:

Simulation vs test output current comparison for 2 : kHz rectangle wave.
Simulation vs test output current comparison for 2 : kHz rectangle wave.

Figure 8:

Simulation vs test output current comparison for 1 MHz rectangle wave.
Simulation vs test output current comparison for 1 MHz rectangle wave.

Figure 9:

Instrumentation amplifier test with a 1 KΩ impedance for a 100 kHz rectangle wave.
Instrumentation amplifier test with a 1 KΩ impedance for a 100 kHz rectangle wave.

Figure 10:

Instrumentation amplifier test with a Cole impedance for a 100 kHz rectangle wave.
Instrumentation amplifier test with a Cole impedance for a 100 kHz rectangle wave.

Figure 11:

Shrink prototype (A) top view and (B) bottom view.
Shrink prototype (A) top view and (B) bottom view.

CC output current (in μA) considering temperature and voltage supply corners_

TopologyIout (0<T<100°C)Iout (1.8<VCC<3.3V)
EHCS250.118 to 250.121249.97 to 250.12
DOI: https://doi.org/10.2478/joeb-2024-0020 | Journal eISSN: 1891-5469
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Language: English
Page range: 169 - 176
Submitted on: Nov 20, 2024
Published on: Jan 4, 2025
Published by: University of Oslo
In partnership with: Paradigm Publishing Services
Publication frequency: 1 issue per year
Keywords:
Wearable,
glucose noninvasive measuring,
enhanced Howland current source,
low voltage power supply,
instrumentation amplifier
Related subjects:
Engineering,
Bioengineering and biomedical engineering,
Biomedical electronics,
Life sciences,
Biophysics,
Medicine,
Biomedical engineering,
Physics,
Spectroscopy and metrology

© 2025 Pablo Dutra da Silva, Pedro Bertemes Filho, published by University of Oslo
This work is licensed under the Creative Commons Attribution 4.0 License.

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