• DocumentCode
    2165361
  • Title

    Spherical-Lens Antennas For Millimeter Wave Radars

  • Author

    Schoenlinner, Bernhard ; Wu, Xidong ; Eleftheriades, George V. ; Rebeiz, Gabriel M.

  • Author_Institution
    Radiation Laboratory, Department of Electrical Engineering and Computer Science, University of Michigan, Ann Arbor, Michigan, 49109-2122, USA. bernhrd@engin.umich.edu
  • fYear
    2001
  • fDate
    24-26 Sept. 2001
  • Firstpage
    1
  • Lastpage
    4
  • Abstract
    A low-cost 77 GHz spherical lens antenna has been developed for mobile applications. The antenna system consists of a 5 cm spherical Teflon lens which is fed by an endfire tapered slot antenna on a 127 ¿m-thick Duroid¿ substrate. The measured patterns result in symmetrical diffraction limited E and H-plane patterns with a 3-dB beamwidth of 5.5°, a sidelobe level below -20 dB and a crosspolarization level of -19 dB. The calculated efficiency of this antenna system is 54%. The efficiency includes spillover loss, amplitude taper, non-uniform phase, and reflection loss. This very low cost antenna can be easily extended to provide 170° coverage using a circular feed array around the spherical Teflon lens.
  • Keywords
    Antenna measurements; Costs; Diffraction; Lenses; Millimeter wave measurements; Millimeter wave radar; Mobile antennas; Optical reflection; Radar antennas; Slot antennas;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Microwave Conference, 2001. 31st European
  • Conference_Location
    London, England
  • Type

    conf

  • DOI
    10.1109/EUMA.2001.339108
  • Filename
    4140176
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=2165361