Patent ID: 6166535
Filing Date: 2000-12-26
Classification: G01D

Abstract:
An inductive angle sensor for a motor vehicle, having an oscillator circuit that creates a periodic AC signal in an exciting coil, and having at least one receiving coil, an evaluation circuit for detecting a signal induced in the at least one receiving coil and a movable inductive coupling element that influences a strength of inductive coupling between the exciting coil and the at least one receiving coil wherein the oscillator circuit is structured as an LC oscillating circuit that shifts its oscillation frequency under influence of a coupled-in, alternating interference field, whose interference frequency lies in a predetermined range close to an uninfluenced base frequency of the oscillating circuit, in a direction of the interference frequency, and wherein a Q-factor of the oscillating circuit is so low that the oscillating circuit operates stably with its oscillation frequency shifted from its base frequency by an externally coupled-in alternating field within a range of at least .+-.1 kHz.