Electronically Tuned Current-mode Quadrature Oscillator with Independently Controllable FO and CO

نویسندگان

  • SURAPONG SIRIPONGDEE
  • PEERAWUT SUWANJAN
چکیده

The realization of current-mode quadrature oscillators using current controlled current conveyor transconductance amplifiers (CCCCTAs) and grounded capacitors is presented. The proposed oscillators can provide 2 sinusoidal output currents with 90o phase difference. It is enabled non-interactive dual-current control for both the condition of oscillation and the frequency of oscillation. High output impedances of the configurations enable the circuit to be cascaded without additional current buffers. The use of only grounded capacitors is ideal for integration. The circuit performances are depicted through PSpice simulations, they show good agreement to theoretical anticipation. Key-Words: Current-mode, Oscillator, Integrated circuit, CCCCTA.

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تاریخ انتشار 2012