S. Linz, F. Lurz, M. Sporer, S. Lindner, S. Mann, R. Weigel, A. Koelpin
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Ultra-short-range, precise displacement measurement setup with a near field slot-line antenna and a dedicated spiral calibration
This work introduces a precise measurement setup for displacement analysis in the near field of a tapered slot-line antenna from 0mm up to 20mm distance. Enhanced accuracy is achieved by a dedicated spiral reconstruction algorithm accounting for the near field effects. Moreover, the precision of the system in the micrometer range is guaranteed by four synchronous 24 bit analog-to-digital converters and a decimation factor of 10, leading to an overall update rate of 1 kHz.
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