University of Sussex

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Wideband voltage source design for EIT systems

posted on 2023-06-08, 12:18 authored by Tabassum-Ur-Razaq Qureshi, B Mehboob, Chris ChatwinChris Chatwin, W Wang
The excitation source is a major component in bio-impedance measurement systems. Electrical Impedance Tomography can be performed by injecting current and measuring the resulting voltages, or by applying voltages and measuring the current developed. Interesting characteristics of breast tissues mostly lie above 1MHz; therefore a wideband excitation source covering higher frequencies (i.e. above 1MHz) is required. This paper proposes a voltage controlled voltage source (VCVS), which can be used over a wide bandwidth (100Hz-20MHz). This paper describes the performance of the designed EIT voltage source for different load conditions and load capacitances. The objective of this research is to establish a viable bandwidth envelope that can be used to design a constant EIT voltage source over a wide bandwidth for practical implementation. Simulation data obtained using Pspice is used to demonstrate the high-bandwidth performance of the source.


Publication status

  • Published



Page range


Event name

38th Annual Northeast Bioengineering Conference, NEBEC 2012;Philadelphia, PA

Event location

Philadelphia, USA

Event type


Event date

16/3/2012 to 18/3/2012

Book title

Bioengineering Conference (NEBEC), 2012 38th Annual Northeast



Department affiliated with

  • Engineering and Design Publications

Full text available

  • No

Peer reviewed?

  • Yes

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