Single-element based ultra-wideband antenna array concepts for wireless high-precision 2-D local positioning

Gardill, M.; Fischer, G.; Weigel, R.; Koelpin, A.

We generally categorize the approaches for ultra-wideband antenna array design, and consequently propose simplified concepts for antenna arrays for a high-precision, ultra-wideband FMCW radar 2-D local positioning system to obtain robustness against multi path interference, perform angle of arrival analysis, as well as instantaneous heading estimation. We focus on low-cost and mechanical robust, industrial-application ready antennas. The antenna arrays are optimized for operation in the 5 GHz to 8 GHz frequency range and are designed towards supporting full omnidirectional 360┬░ as well as partial half-plane direction of arrival estimation. Two different concepts for vehicle- as well as wall-mounted antenna array systems are proposed and discussed. We propose a wideband unidirectional bow-tie antenna array element having 97% impedance and 37% pattern bandwidth and a robust vehicle mounted omnidirectional antenna element having more than 85% impedance and pattern bandwidth.

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Gardill, M. / Fischer, G. / Weigel, R. / et al: Single-element based ultra-wideband antenna array concepts for wireless high-precision 2-D local positioning. 2013. Copernicus Publications.

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