Title :
Offset cylindrical reflector antenna fed by a parallel-plate Luneburg lens for automotive radar applications in mm-wave
Author :
Park, Young-Jin ; Herschlein, Alexander ; Wiesbeck, Werner
Author_Institution :
Inst. fur Hochstfrequenztechnik & Elektron., Univ. Karlsruhe, Germany
Abstract :
Using a single offset cylindrical parabolic reflector and an improved parallel-plate Luneburg lens, a novel antenna is developed for automotive radar in the mm-wave range. By adding linearly- or circularly-corrugated extensions to the parallel-plate Luneburg lens, a cylindrical wave illuminates the reflector, and hence good performances are achieved. Using GO, the aperture field of the antenna is found and then far-fields of the entire antenna are derived using the aperture field integration method. Design procedures of the entire antenna are presented. For verification of design rules and simulation, a prototype antenna for an adaptive cruise control (ACC) radar at 76.5 GHz is designed and measured. The antenna has properties of a relatively wide scan angle and multiple beams.
Keywords :
antenna radiation patterns; geometrical optics; lens antennas; millimetre wave antennas; multibeam antennas; offset reflector antennas; radar antennas; reflector antenna feeds; road vehicle radar; 76.5 GHz; GO; MM-wave antenna; adaptive cruise control radar; aperture field integration method; automotive radar; cylindrical reflector antenna; cylindrical wave; far-fields; geometrical optics; multiple beams; offset reflector antenna; parallel-plate Luneburg lens; radiation patterns; reflector antenna feed; wide scan angle; Adaptive arrays; Aperture antennas; Automotive engineering; Design methodology; Lenses; Programmable control; Radar antennas; Radar applications; Reflector antennas; Virtual prototyping;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2002. IEEE
Print_ISBN :
0-7803-7330-8
DOI :
10.1109/APS.2002.1017053
