Power efficient single-pin harmonic oscillator with complementary active devices

摘要

The oscillator, in particular for generating a carrier signal for wireless applications such as wireless transceivers, comprises a resonance circuit including an inductor (L), an amplifier circuit connected in series to the resonance circuit, and an output terminal (V_out) connected to the circuit node between the resonance circuit and the amplifier and for outputting an oscillating voltage signal. The amplifier comprises a differential amplifier including two complementary transistor devices (NMOS, PMOS). A first transistor device (NMOS) of the differential amplifier is connected to the resonance circuit and a complementary second transistor device (PMOS) is connected in series to the first transistor device (NMOS). A capacitor (Ck) is connected between the output terminal (V_out) and the control input of a second transistor device (PMOS)