<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>Howland circuits have been widely used in Electrical Bioimpedance Spectroscopy applications as reliable current sources. This paper presents an algorithm based on Differential Evolution for the automated design of Enhanced Howland Sources according to arbitrary design constraints while respecting the Howland ratio condition. Results showed that the algorithm can obtain solutions to commonly sought objectives, such as maximizing the output impedance at a given frequency, making it a versatile method to be employed in the design of sources with specific requirements. The mathematical modeling of the source output impedance and transconductance, considering a non-ideal operational amplifier, was validated against SPICE simulations, with results matching up to 10 MHz.</p>
</abstract>

Howland circuits have been widely used in Electrical Bioimpedance Spectroscopy applications as reliable current sources. This paper presents an algorithm based on Differential Evolution for the automated design of Enhanced Howland Sources according to arbitrary design constraints while respecting the Howland ratio condition. Results showed that the algorithm can obtain solutions to commonly sought objectives, such as maximizing the output impedance at a given frequency, making it a versatile method to be employed in the design of sources with specific requirements. The mathematical modeling of the source output impedance and transconductance, considering a non-ideal operational amplifier, was validated against SPICE simulations, with results matching up to 10 MHz.

Design of Howland current sources using differential evolution optimization

Journal of Electrical Bioimpedance

This work is licensed under the Creative Commons Attribution 4.0 International License.

{"article-title":"Design of Howland current sources using differential evolution optimization"}

Howland circuits have been widely used in Electrical Bioimpedance Spectroscopy applications as reliable current sources. This paper presents an algorithm based...

Design of Howland current sources using differential evolution optimization

Pubblicato online: 31 dic 2020

Pagine: 96 - 100

Ricevuto: 06 nov 2020

DOI: https://doi.org/10.2478/joeb-2020-0014

Parole chiave
bioimpedance, differential evolution, Howland source, optimization

© 2020 Kaue Felipe Morcelles et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Design of Howland current sources using differential evolution optimization

Pubblicato online: 31 dic 2020

Pagine: 96 - 100

Ricevuto: 06 nov 2020

DOI: https://doi.org/10.2478/joeb-2020-0014

Parole chiavebioimpedance, differential evolution, Howland source, optimization

© 2020 Kaue Felipe Morcelles et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Parole chiave
bioimpedance, differential evolution, Howland source, optimization