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In this paper a novel Winner-Take-All (WTA) topology is presented which shows good trade-off between resolution and resolution speed, at the cost of some increase in power consumption. The proposed WTA is compared with other current-mode WTAs found in literature based on the same operation principle. All the topologies were designed in a 0.13µm CMOS process and characterized in terms of resolution,...
This paper reports a new measurement based approach that can be used to determine the functional dependence of a D.C. circuit variable of interest on a small set of design variables. The approach makes use of a small number of measurements and generalizes the well known Thévenin's Theorem of circuit theory.
We report an experimental technique for estimating the dispersion coefficient α of a constant phase element (CPE). The method employs using a setup to excite the impedance under consideration via a periodic triangle-wave current I(t). Measuring the 50% rise time of the developed voltage V (t) then enables finding α using a pre-calculated Table. Experimental results are shown.
A CMOS voltage-to-current converter is presented. It is based on a class AB current mirror with very low input resistance and a passive resistor connected to the input for voltage-to-current conversion. Class AB operation is achieved without extra supply voltage requirements or static power consumption, using Quasi-Floating Gate techniques. Measurement results of a differential configuration for a...
Analog Front End of any measurement devices suffer from the error arising out of the additive analog device offsets. Existing energy measurement device architectures uses a high pass filter (or a D.C. notch filter) at the output of the current channel Analog to Digital Converter (ADC) to cancel offsets generated by analog front-end, which makes it failing to measure the power consumption in a non-linear...
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