In this paper a new circuit topology for realizing second-order current-mode quadrature oscillator is proposed. Three additional circuits are further derived from it, thus resulting in four distinct circuits. Each circuit employs three differential voltage current conveyors and all grounded passive components, ideal for IC implementation. All the circuits possess high output impedance. The circuits exhibit non-interactive frequency control and low THD. The effects of non-idealities are also analyzed. PSPICE simulations using 0.5 mu CMOS parameters confirm the validity and practical utility of the proposed circuits. Copyright (C) 2010 John Wiley & Sons, Ltd.