1. Quadrature oscillator using CCCCTAs and grounded capacitors with amplitude controllability.
- Author
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Sa-Ngiamvibool, Worawat and Jantakun, Adirek
- Subjects
- *
ELECTRIC oscillators , *CAPACITORS , *AMPLITUDE modulation , *CURRENT conveyors , *ELECTRONIC control , *ELECTRICAL load - Abstract
The realisation of two electronically tunable current-mode quadrature oscillators using Current Controlled Current Conveyor Tranconductance Amplifiers (CCCCTAs) and grounded capacitors is presented. The proposed circuits offer the following advantages. The condition of oscillation and the frequency of oscillation can be orthogonally controlled. Availability of electronic control of amplitude of output current is achieved. The oscillators have high outputs impedance which facilitates easy driving an external load without additional current buffers. The proposed circuits are constructed by using two active elements and all grounded capacitors which are attractive for integration and have low active and passive sensitivities. The PSPICE simulation and experimental results are included to show the workability of the proposed circuit. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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