Planar Dual-Mode Horn Array With Corporate-Feed Network in Inverted Microstrip Gap Waveguide Articles uri icon

publication date

  • July 2014

start page

  • 3534

end page

  • 3542

issue

  • 7

volume

  • 62

international standard serial number (ISSN)

  • 0018-926X

electronic international standard serial number (EISSN)

  • 1558-2221

abstract

  • The gap waveguide technology was recently introduced as an alternative to hollow waveguides and substrate integrated waveguides for millimeter-wave applications. This paper presents the design of a 4 x 4 planar dual-mode horn array with low loss corporate feed network realized by using an inverted microstrip gap waveguide. The dual-mode horns are compact and designed to reduce the power losses in grating lobes. It is because the diameters of the horn apertures are larger than two wavelengths to allow more space for the feed network and thereby lower conductive losses. The measurements show very good agreement with simulations, with 10% bandwidth of the return loss, 25 dBi realized gain and about 60% aperture efficiency.

keywords

  • array; dual-mode horn; feed network; gap waveguide; grating lobes; suspended-strip; band; antenna; design; technology; surfaces; nails; bed