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In this paper, thorough analysis along with mathematical derivations of the matched filter for a voltmeter used in electrical impedance tomography systems are presented. The effect of the random noise in the system prior to the matched filter, generated by other components, are considered. Employing the presented equations allow system/circuit designers to find the maximum tolerable noise prior to...
In this paper, a high frequency read-out channel for electrical impedance imaging is presented. The channel comprises an instrumentation amplifier (IA), automatic gain control (AGC), high-resolution delta sigma analog-to-digital converter (ADC), mixer, and ADC buffer. Design details of the channel are described, and the performance of the ADC and the entire channel are reported, based on simulation...
In this paper, we present an instrumentation amplifier for electrical impedance tomography. The instrumentation amplifier is designed to process a wide dynamic range input, based on a fast automatic gain control technique that minimizes measurement latency. In addition, the instrumentation amplifier employs a reconfigurable power scheme that allows it to adjust its total power consumption depending...
This paper presents modeling of a capacitive link for wireless data transfer to implantable biomedical microsystems. Based on the proposed model, voltage transfer ratio of the link is calculated, and its most important parameters are highlighted. To validate the suggested model, measurements are performed with 5 mm × 5mm plates, which have a layer of chicken breast with 3.5 mm thickness in between...
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