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http://dx.doi.org/10.12673/jant.2018.22.2.154

Development of Multiplier Operator for Input Signal Control of Electronic Circuits  

Kim, Jong-Ho (R&D Center of Woojinntec Inc)
Chang, Hong-Ki (R&D Center of Woojinntec Inc)
Kwon, Dae-Shik (R&D Center of Woojinntec Inc)
Che, Gyu-Shik (R&D Center of Woojinntec Inc)
Abstract
The multiplier circuit is necessary to estimate degradation status of electronic cards in nuclear power plant, but its accuracy is not easy in processing those functions to multiply two input signals. What is important in multiplier circuit is that the multiplication result must be accurate and its linearity must be perfect. We developed and proposed excellent linearity multiplier circuit using operational amplifiers and transistor characteristics, and then proved its validity in this paper. We have made efforts to eliminate nonlinearity components of semiconductors with this circuit in order to ensure excellent linearity of developed multiplier circuit. We conducted multiplication operations through simulation, applying adequate values to each component in order to verify the circuit composed of that method. We showed step-by-step output signals, and then compared the logical analyses and measuring results as simulation results. We confirmed that this method is superior to existing multiplication or linearity.
Keywords
Gilbert cell; Log circuit; Antilog circuit; Adder; Linearity;
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