A novel four-quadrant/one-quadrant multiplier circuit

A novel Type-Reduction/Defuzzification circuit architecture for an analog interval type-2 fuzzy inference system is proposed. Based on the Nie-Tan type-reduction method, the circuit operates with current-mode inputs, representing the firing intervals of the rules created by the inference engine, and generating a PWM output. It is demonstrated that by selecting an appropriate number of consequents it is possible to create the PWM output directly, without the need for analog multiplier/divider circuits. This feature makes the circuit very simple, aiding in the design process, while the PWM output makes it suitable for controlling DC-DC converters, maximum power point trackers (MPPT) for energy generators, or other switching applications. It is designed to achieve very low power consumption, allowing its use in power restrained environments, such as energy harvesting systems. The circuit was designed using TSMC 0.18µm technology, in CADENCE Virtuoso software, and simulated for different combinations of input values, demonstrating its capabilities. It was also simulated as part of a type-2 fuzzy inference system with two inputs, nine rules, and firing intervals represented by currents within 0 and 10µA. The circuit was prototyped, and the experimental average power consumption was only 53.8µW, validating its low power consumption characteristic.

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A Low-Voltage Four-Quadrant Current-Mode Precision Multiplier/Divider Employing Single BiCMOS VDGA

Hirunporm,

Theppota,

Siripruchyanun

2023

2023 Research, Invention, and Innovation Congress: Innovative Electricals and Electronics (RI2C)

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A novel four-quadrant/one-quadrant multiplier circuit

Cited by 4 publications

References 22 publications

A New Design for Compact Floating-Gate Transistor Based Low-Voltage Four-Quadrant Analog Current Multiplier

A New Design for Compact Floating-Gate Transistor Based Low-Voltage Four-Quadrant Analog Current Multiplier

A PWM Nie-Tan Type-Reducer Circuit for a Low-Power Interval Type-2 Fuzzy Controller

A Low-Voltage Four-Quadrant Current-Mode Precision Multiplier/Divider Employing Single BiCMOS VDGA

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