Title :
New approximation for cosine wave mapping function to transistor level circuit
Author :
Reyes-Rosales, J. ; Gonzalez-Diaz, V.R. ; Guerrero-Castellanos, J.F.
Author_Institution :
Benemerita Univ. Autonoma de Puebla, Puebla, Mexico
Abstract :
The present paper deals with the design of an analog circuit that allows generating the mapping of the cosine function. This design is based on a novel approximation form using electrical parameters of a 90nm Complementary Metal-Oxide-Semiconductor (CMOS) process. The proposed approach has been compared with other reported schemes. Owing to simplicity, the proposed analog circuit is suitable for high frequency applications and where the power resources are limited. As an example, the application of this circuit in the solution of a nonlinear ordinary differential equation is presented. This equation represents the model of the vertical dynamics of a PVTOL (Planar Vertical Take-off and Landing) system. The main advantage with the analog solution for trigonometric functions is a continuous time response at high frequency and with no quantization error.
Keywords :
MOSFET; approximation theory; nonlinear differential equations; semiconductor device models; CMOS process; PVTOL system; analog circuit; approximation theory; complementary metal oxide-semiconductor process; continuous time response; cosine wave mapping function; electrical parameter; nonlinear ordinary differential equation; planar vertical take-off and landing system; power resource; quantization error; size 90 nm; transistor level circuit; trigonometric function; Analog circuits; CMOS integrated circuits; Function approximation; Mathematical model; Real-time systems; Transistors;
Conference_Titel :
Electronics, Communications and Computers (CONIELECOMP), 2015 International Conference on
Conference_Location :
Cholula
DOI :
10.1109/CONIELECOMP.2015.7086932
