Current/voltage-mode third order quadrature oscillator employing two multiple outputs CCIIs and grounded capacitors

494-498A new quadrature oscillator circuit using two multiple outputs second-generation current conveyors (CCIIs), three grounded capacitors and three resistors is presented. Two high output impedance current-mode signals and two voltage-mode signals each pair with 90° phase difference are available in the proposed circuit. The oscillation condition and oscillation frequency are independently controllable through grounded resistors. The use of only grounded capacitors makes the proposed circuit attractive for integrated circuit implementation