2012
DOI: 10.1088/1742-6596/407/1/012030
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Mirrored Modified Howland Circuit for Bioimpedance Applications: Analytical Analysis

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Cited by 14 publications
(7 citation statements)
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“…We note that the value obtained is consistent with values reported for modelled current sources without multiplexers (e.g. Bertemes-Filho et al, 2012). An improvement in the output impedance of the current generator at the higher frequencies can be achieved by using resistors of tolerance better than 1% and higher frequency opamps (Bertemes-Filho et at., 2012;Bertemes-Filho et al, 2016).…”
Section: Discussionsupporting
confidence: 89%
See 1 more Smart Citation
“…We note that the value obtained is consistent with values reported for modelled current sources without multiplexers (e.g. Bertemes-Filho et al, 2012). An improvement in the output impedance of the current generator at the higher frequencies can be achieved by using resistors of tolerance better than 1% and higher frequency opamps (Bertemes-Filho et at., 2012;Bertemes-Filho et al, 2016).…”
Section: Discussionsupporting
confidence: 89%
“…Bertemes-Filho et al, 2012). An improvement in the output impedance of the current generator at the higher frequencies can be achieved by using resistors of tolerance better than 1% and higher frequency opamps (Bertemes-Filho et at., 2012;Bertemes-Filho et al, 2016). Additionally, measurement of injected current amplitude can increase the impedance measurement accuracy and that may be implemented in future designs.…”
Section: Discussionmentioning
confidence: 99%
“…The current has a constant value regardless of the DUT using OPA655 operational amplifiers. These op-amps were chosen as they outperformed three others in a study by Bertemes-Filho et al [15].…”
Section: Development Of Feedback Systemmentioning
confidence: 99%
“…The current has a constant value regardless of the DUT using OPA655 operational amplifiers. These op-amps were chosen as they outperformed three others in a study by Bertemes-Filho et al [15]. In addition, a B&K Precision model 4053 Function Generator (B&K Precision Corp, Yorba Linda, CA, USA) is used to generate the 50 kHz 1 Vpp sinusoidal wave that is used as the reference signal.…”
Section: Development Of Feedback Systemmentioning
confidence: 99%
“…In order to improve the stability of the circuit, two single-ended Howland circuits can be set together in order to have a differential output rrent, which is also called cu Figure 6 [17]. This type of current source uses two equal input voltages with 180 degrees phase shift from each other but also has a unique reference for both sides of the circuit, which, in turns, reduce the feed-through capacitance between output and input.…”
Section: Mirrored Howland Current Source: Modelingmentioning
confidence: 99%