Abstract
The antenna is a key component of automotive radar systems. In this paper we present a novel dielectric lens antenna configuration, where a cylindrical lens is illuminated by a uniform linear array (ULA), allowing the application of standard array signal processing such as digital beamforming (DBF) or high resolution direction of arrival (DOA) estimation in azimuth. In the elevation plane the lens shows superior performance compared to a conventional patch array. Array imperfections generated due to influence of the lens edges are studied with respect to DBF performance and the resulting design tradeoffs are discussed.
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Notes
- 1.
The transmitting antenna is responsible for producing a focused illumination of the roadside scenario in the azimuth plane. Since it is also positioned under the lens, its elevation pattern largely equals that of the receiving antennas.
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Acknowledgements
This project is supported by the Ministry of Education and Research (BMBF) under contract nr. 16SV2181 (KRAFAS). The authors would like to thank all partners of the KRAFAS consortium, especially Robert Bosch GmbH and the University of Bremen for the support during the measurements.
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Wenig, P., Weigel, R. (2011). Pattern Design and DBF Analysis of a Dielectric Lens Antenna for 77 GHz Automotive Long Range Radar. In: Lindenmeier, S., Weigel, R. (eds) Electromagnetics and Network Theory and their Microwave Technology Applications. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-18375-1_6
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DOI: https://doi.org/10.1007/978-3-642-18375-1_6
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