RC oscillators based on high‐ Q frequency‐selecting network

In this study, a traditional voltage‐mode oscillator consisting of a high‐ Q band‐pass filter and a voltage amplifier is transformed into a current‐mode oscillator employing a trans‐conductance amplifier. Furthermore, a current‐mode quadrature oscillator with a high‐ Q band‐pass filter and second generation current‐controlled conveyors (CCCIIs) is presented. Since the loop of the oscillator has rich selectivity, the oscillator produces less distortion. Also, the 3 dB bandwidth, oscillation criterion, and oscillation frequency of the oscillator could independently, linearly, and electronically be tuned by the aid of adjusting bias currents of the CCCIIs. Finally, the validity of the designed circuit is verified by means of the computer simulation and the non‐ideal analysis is performed to explain the results of the simulation. The results show that the designed circuit is workable.