Integrated Metal-lens Antennas with Reduced Height at 71-76 GHz

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A low-profile lens antenna with high efficiency is desired in many millimeter-wave applications. In this work, a new approach to integrate a dielectric lens and a metal-lens is studied to minimize the lens height. The proposed integrated metal-lens antenna minimizes the height while maintaining aperture efficiency close to that of traditional elliptical integrated lens antennas. In case of low permittivity materials, the height of the designed lens can be 35% smaller. An integrated metal-lens antenna with 8λ0 radius is designed with Teflon (ϵr = 2.1 and tanδ = 0.0002) and 0.575λ0 parallel plate separation for operation at lower E-band, i.e., 71-76 GHz. The simulated boresight directivity of the designed lens is 32.6 dB and the peak aperture efficiency is 80%. The 3-dB gain bandwidth of the designed dual-polarized integrated metal-lens antenna is approx. 10% and the gain scan loss is 7.4 dB for beam steering range of ±30°.

Original languageEnglish
Title of host publicationProceedings of the European Conference on Antennas and Propagation
ISBN (Electronic)9788890701887
Publication statusPublished - 1 Mar 2019
MoE publication typeA4 Article in a conference publication
EventEuropean Conference on Antennas and Propagation - Krakow, Poland
Duration: 31 Mar 20195 Apr 2019
Conference number: 13

Publication series

NameProceedings of the European Conference on Antennas and Propagation
ISSN (Print)2164-3342


ConferenceEuropean Conference on Antennas and Propagation
Abbreviated titleEuCAP
Internet address


  • beam-steering antenna
  • integrated lens antenna
  • low-profile lens
  • matching layers
  • metal-lens antenna
  • millimeter-wave
  • square waveguides

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