Quadrature Oscillators with Grounded Capacitors and Resistors Using FDCCIIs

TLDR: In this paper, two current-mode and/or voltage-mode quadrature oscillator circuits using FDCCII, two grounded capacitors, and two (or three) grounded resistors are presented.

Abstract: Two current-mode and/or voltage-mode quadrature oscillator circuits each using one fully-differential secondgeneration current conveyor (FDCCII), two grounded capacitors, and two (or three) grounded resistors are presented. In the proposed circuits, the current-mode quadrature signals have the advantage of high-output impedance. The oscillation conditions and oscillation frequencies are orthogonally (or independently) controllable. The current-mode and voltage-mode quadrature signals can be simultaneously obtained from the second proposed circuit. The use of only grounded capacitors and resistors makes the proposed circuits ideal for integrated circuit implementation. Simulation results are also included.