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Low-Voltage Wide Tuning Range Membership Function Generator and Its Application

Department of Electrical Engineering, College of Electrical Engineering, Mahshahr Branch, Islamic Azad University, Mahshahr, Iran

E-mail Address: b.ghanavati@mhriau.ac.ir

Corresponding author.

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S. Mohammadzadeh

Department of Electrical Engineering, College of Electrical Engineering, Mahshahr Branch, Islamic Azad University, Mahshahr, Iran

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B. Noshad

Department of Electrical Engineering, College of Electrical Engineering, Mahshahr Branch, Islamic Azad University, Mahshahr, Iran

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M. Ahmadzadeh

Department of Electrical Engineering, College of Electrical Engineering, Mahshahr Branch, Islamic Azad University, Mahshahr, Iran

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, and

A. Falahat

Department of Electrical Engineering, College of Electrical Engineering, Mahshahr Branch, Islamic Azad University, Mahshahr, Iran

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https://doi.org/10.1142/S0218126616500109Cited by:1 (Source: Crossref)

Abstract

A versatile low-voltage CMOS circuit with a trapezoidal transconductance characteristic and independently programmable slope, height and horizontal position is designed in 0.18 $μ$ $μ$ m standard CMOS technology. The proposed circuit is constructed from combination of two linearization methods to enhance the linearity in low voltage applications. A $-$ $-$ 118dB THD was obtained for a 400mV peak to peak differential input voltage at 125KHz. Simulation results using HSPICE that verify the functionality of circuit with 1.5V supply are presented. The total power consumption is only 120 $μ$ $μ$ W. The circuit can find application in the implementation of membership functions in analogue and mixed-signal neuro-fuzzy systems.

This paper was recommended by Regional Editor Emre Salman.

Keywords:

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