Patent ID: 9528858
Filing Date: 2016-12-27
CPC Classification: G01D

Claim Text:
1. An electronic device comprising: an excitation control configured to receive a variable first parameter and configured to generate a first signal as a function of the variable first parameter and a second signal as a function of the variable first parameter; a first excitation element coupled to the excitation control and configured to receive the first signal and configured to generate a corresponding first electromagnetic field; a second excitation element coupled to the excitation control and configured to receive the second signal and configured to generate a corresponding second electromagnetic field; a target positioned within the first and second electromagnetic fields and configured to alter the first and second electromagnetic fields as a function of its angular position; a receiving element positioned within the first and second electromagnetic fields and coupled to the first and second excitation elements and configured to generate a third signal in response to the first and second electromagnetic fields as altered by the target; and a signal processor coupled to the receiving element and coupled to the excitation control, wherein the signal processor is configured to receive the third signal and provide an updated variable first parameter to the excitation control, and wherein the signal processor is also configured to generate a fourth signal representing the angular position of the target based on the third signal and the variable first parameter.