A circuit implementation of an ultra high speed, low power analog fully programmable MFG

In this article, an analog fully programmable membership function generator (MFG) is presented. It is capable of generating Gaussian, Triangular and Trapezoidal shapes as well as S or Z shapes. For omitting noise disturbances, differential structures are utilized in input and output stages which are in voltage mode and current mode, respectively. In contrast with conventional MFGs which are controlled digitally or by mixed signal approaches, this structure is a fully programmable analog MFG. It is capable of modifying slope, position and height of output's current. The most distinguishing features of this MFG are its capability of generating ultra-high speed outputs reaching speeds as high as 200 MHz and consuming a very low amount of power. Due to the simple structure of this MFG, it consumes a small active area at the size of 20μm×30μm. It is constructed of only 16 transistors. This MFG has been designed in 0.35μm CMOS technology. The simulations have been done with Hspice using TSMC, BSIM3 (V3.1) model.

[1]  A. Khoei,et al.  Design of a current-mode analog CMOS fuzzy logic controller , 2009, IEEE EUROCON 2009.

[2]  Ramón González Carvajal,et al.  New low-Voltage fully programmable CMOS triangular/trapezoidal function Generator circuit , 2005, IEEE Transactions on Circuits and Systems I: Regular Papers.

[3]  A. Papoulis.  Probability and Statistics , 1989 .

[4]  Y. Tsividis.  Operation and modeling of the MOS transistor , 1987 .

[5]  Abdollah Khoei,et al.  Analog realization of fuzzifier and defuzzifier interfaces for fuzzy chips , 1998, 1998 Conference of the North American Fuzzy Information Processing Society - NAFIPS (Cat. No.98TH8353).

[6]  Michel Verleysen,et al.  A 5.26 Mflips programmable analogue fuzzy logic controller in a standard CMOS 2.4 /spl mu/ technology , 2000, 2000 IEEE International Symposium on Circuits and Systems. Emerging Technologies for the 21st Century. Proceedings (IEEE Cat No.00CH36353).

[7]  Gaetano Palumbo,et al.  A fuzzy membership function circuit in SC technique , 2000, 2000 IEEE International Symposium on Circuits and Systems. Emerging Technologies for the 21st Century. Proceedings (IEEE Cat No.00CH36353).

[8]  Takahiro Inoue,et al.  Synthesis of operational transconductance amplifier-based analog fuzzy functional blocks and its application , 1995, IEEE Trans. Fuzzy Syst..

[9]  Abdollah Khoei,et al.  Circuit implementation of a fully programmable and continuously slope tunable triangular/trapezoidal membership function generator , 2012 .

[10]  Randall L. Geiger,et al.  A new current mirror layout technique for improved matching characteristics , 1999, 42nd Midwest Symposium on Circuits and Systems (Cat. No.99CH36356).

[11]  Yannis P. Tsividis,et al.  Mixed analog-digital fuzzy logic controller with continuous-amplitude fuzzy inferences and defuzzification , 1998, IEEE Trans. Fuzzy Syst..

[12]  Herbert Eichfeld,et al.  A 12b general-purpose fuzzy logic controller chip , 1996, IEEE Trans. Fuzzy Syst..

[13]  Kazuo Tanaka,et al.  Fuzzy Control Systems Design and Analysis: A Linear Matrix Inequality Approach , 2008 .

[14]  Abdollah Khoei,et al.  Design of an analog CMOS fuzzy logic controller chip , 2002, Fuzzy Sets Syst..

[15]  Abdollah Khoei,et al.  A CMOS reference-less membership function generator , 2011, 2011 19th Iranian Conference on Electrical Engineering.

[16]  Abdollah Khoei,et al.  A mixed-signal current-mode fuzzy logic controller , 2005 .

[17]  Leopoldo García Franquelo,et al.  Mixed-signal CMOS fuzzifier with emphasis on power consumption , 1999, 42nd Midwest Symposium on Circuits and Systems (Cat. No.99CH36356).

[19]  Behzad Razavi,et al.  Design of Analog CMOS Integrated Circuits , 1999 .

[20]  Ying Bai,et al.  Advanced Fuzzy Logic Technologies in Industrial Applications , 2010 .

[21]  A. Papoulis.  Probability y statistics , 1990 .