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Offset cylindrical reflector antenna fed by a parallel-plate Luneburg lens for automotive radar applications in millimeter-wave

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2 Author(s)
Young-Jin Park ; Inst. fur Hochstfrequenztechnik und Elektron., Univ. Karlsruhe, Germany ; W. Wiesbeck

Using a single offset cylindrical parabolic reflector and a parallel-plate Luneburg lens, a novel high-gain and high-efficiency antenna is developed for automotive radar at mm-wave frequencies. Particularly, a pair of small corrugated extensions is added to the lens for a cylindrical wave. Thus, by feeding a cylindrical wave to the reflector, especially the performance in elevation is enhanced, keeping the complete antenna compact. For verification, a prototype antenna for an adaptive cruise control radar at 76.5 GHz is designed and measured. The theoretical results are verified with good agreement.

Published in:

IEEE Transactions on Antennas and Propagation  (Volume:51 ,  Issue: 9 )