Abstract: A digital optimal filter having an especially sinusoidal pulse response uses a filter structure with a recursive and a transversal portion. The transversal portion comprises filter coefficients for the representation of scan results of half a period of the sinusoidal pulse response signal. The recursive filter structure is used to change the sign after generation of the scan results for half a period and to mark the start and the end of the pulse response. A plurality of periods can lie in between the start and the end of the pulse response, this is why the digital optimal filter can be used to extract especially sinusoidal burst signals from an original signal, namely in digital technology, which is advantageous for the implementation of IC's.

Abstract: An inductive position sensor, which in particular is a rotational angle sensor, is provided with two first transmitter units for the generation of two site-dependent first alternating fields having the same carrier frequency, and at least one oscillating circuit arranged in or on an element which may be moved within the alternating field and the position of which is to be determined. The oscillating circuit can be energized by the total alternating field and generates a oscillating-circuit alternating field having the same carrier frequency as the first alternating fields.

Abstract: A digital optimal filter having an especially sinusoidal pulse response uses a filter structure with a recursive and a transversal portion. The transversal portion comprises filter coefficients for the representation of scan results of half a period of the sinusoidal pulse response signal. The recursive filter structure is used to change the sign after generation of the scan results for half a period and to mark the start and the end of the pulse response. A plurality of periods can lie in between the start and the end of the pulse response, this is why the digital optimal filter can be used to extract especially sinusoidal burst signals from an original signal, namely in digital technology, which is advantageous for the implementation of IC's.

Abstract: An inductive position sensor, which in particular is a rotational angle sensor, is provided with two first transmitter units for the generation of two site-dependent first alternating fields having the same carrier frequency, and at least one oscillating circuit arranged in or on an element which may be moved within the alternating field and the position of which is to be determined. The oscillating circuit can be energized by the total alternating field and generates a oscillating-circuit alternating field having the same carrier frequency as the first alternating fields.