Title :
An Electronically Adjustable Amplitude of OTA-Based Sinusoidal Nonlinear Oscillator
Author :
Pranayanuntana, Poramate ; Khwankaew, Weerawat
Author_Institution :
Dept. of Control Eng., King Mongkut´´s Inst. of Technol. Ladkrabang, Bangkok, Thailand
Abstract :
A systematic approach to adjust the amplitude of a sinusoidal nonlinear oscillator is discussed in this paper. Operational transconductance amplifier (OTA) and adjustable high-Q, second order bandpass filter are nonlinear element and linear element, respectively. The describing function method is used to find periodic solutions for nonlinear system. Experimental and simulation results are simulated using ORCAD CAPTURE, while, the numerical results are obtained using MAPLE and MATLAB.
Keywords :
band-pass filters; describing functions; operational amplifiers; oscillators; MAPLE; MATLAB; ORCAD CAPTURE; describing function method; operational transconductance amplifier; second order bandpass filter; sinusoidal nonlinear oscillator; Band pass filters; Circuit simulation; Computational modeling; Feedback; Hilbert space; MATLAB; Nonlinear systems; Operational amplifiers; Oscillators; Transconductance; OTA; describing function; nonlinear oscillator; orthonormal expansion;
Conference_Titel :
Digital Image Processing, 2009 International Conference on
Conference_Location :
Bangkok
Print_ISBN :
978-0-7695-3565-4
DOI :
10.1109/ICDIP.2009.24
