Abstract
An advanced aspheric and asymmetric large aperture dielectric lens antenna is proposed flrstly here for high resolution at W- band frequency. Large aperture and aspheric lens provides minimum focusing error and high resolution in millimeter wave quasi-optics application. To the best of the authors' knowledge we design flrst time 500mm large aperture lens for W-band quasi optics application. Near fleld radiation pattern, beam size and focal length of the lens are obtained theoretically and experimentally as well. Dielectric rod waveguide antenna is also designed and employed as a source antenna for the lens. The measured and simulated results of the DRW antenna also show very good performance at W-band frequency, and it has 15.3dB gain with i22.5dB sidelobe levels at 94GHz.
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