1. How to submit my research paper? What’s the process of publication of my paper?
The journal receives submitted manuscripts via email only. Please submit your research paper in .doc or .pdf format to the submission email: ijeee@ejournal.net.
2. Can I submit an abstract?
The journal publishes full research papers. So only full paper submission should be considered for possible publication...[Read More]

CCTAs based Current-mode Quadrature Oscillator with High Output Impedances

T. Thosdeekoraphat, S. Summart, C. Saetiaw, S. Santalunai, and C. Thongsopa
School of Telecommunication Engineering, Suranaree University of Technology, Nakhonratchasima, Thailand.
Abstract—This article presents a current-mode quadrature oscillator. The proposed oscillator can provide 2 sinusoidal output currents with 900 phase difference. It also provides high output impedances that make the circuit able to directly drive load without additional current buffer. The condition of oscillation and frequency of oscillation can be controlled independently and electronically by adjusting the bias currents of the CCTAs. The circuit uses 3 current controlled transconductance amplifiers (CCTAs) and 2 grounded capacitors. The proposed circuit uses only grounded capacitors without additional external resistors, the proposed circuit is considerably appropriate to further developing into an integrated circuit. The results of PSPICE simulation program are corresponding to the theoretical analysis. 

Index Terms—high output impedances, Current-mode, quadrature oscillator, CCTA

Cite: T. Thosdeekoraphat, S. Summart, C. Saetiaw, S. Santalunai, and C. Thongsopa, "CCTAs based Current-mode Quadrature Oscillator with High Output Impedances," International Journal of Electronics and Electrical Engineering, Vol. 1, No. 1, pp. 52-56, March 2013. doi: 10.12720/ijeee.1.1.52-56
 
Copyright © 2012-2021 International Journal of Electronics and Electrical Engineering, All Rights Reserved