REDUCED HARMONIC DISTORTION OSCILLATOR CIRCUIT

摘要

The invention relates to a reduced harmonic distortion oscillator circuit comprising an adjustable oscillator amplifier (3) for generating an oscillator output signal and an amplitude regulating circuit (2) for regulating an amplitude A of the oscillator output signal, wherein the amplitude regulating circuit (2) generates an amplitude regulating signal Vregel depending on a detected amplitude A of the oscillator output signal in such a way that the oscillator amplifier (3) operates in a given operative range with almost linear amplification characteristics and a definable lower amplitude in a determined operating point. The oscillator amplifier (3) is configured in such a way that the given operative range and operating point are independent from the amplitude regulating signal Vregel. A stable amplitude regulation loop can thus be realized for generating a reduced harmonic distortion oscillator output signal even when the properties and parameters of the components used exhibit a larger scattering area. The oscillator circuit can be easily embodied as an integrated circuit.