A new class of oscillators

The Colpitts is perhaps the best known class of oscillators and is realized in many forms using a variety of sustaining stage active devices. This article describes a new class of oscillator that uses a resonator with three transmission zeros at dc formed by a series capacitor, a shunt inductor and a series capacitor. This structure is suitable for sustaining stages with either equal or dissimilar input and output impedance. The new oscillator class is economic and offers alternative features to complement the classic Colpitts.