Millimeter-Wave Low-Profile Metasurface Antenna With Beam Direction Manipulation Enabled by Near-Field Huygens Metasurface

This paper proposes a low-profile metasurface antenna capable of beam direction manipulation that operates within the millimeter-wave frequency spectrum. The design encompasses a non-offset substrate-integrated waveguide (SIW) slot array antenna and a near-field Huygens metasurface. The SIW slot arr...

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Bibliographic Details
Published inIEEE transactions on antennas and propagation p. 1
Main Authors Lian, Ji-Wei, Xu, Rui-Lin, Han, Juzheng, Gu, Jihong, Ding, Dazhi
Format Journal Article
LanguageEnglish
Published IEEE 02.10.2024
Subjects
Antenna arrays
Antenna feeds
Antenna radiation patterns
Bandwidth
beam direction manipulation
Electromagnetic waveguides
Electromagnetics
Impedance
low-profile
Metasurface antenna
Metasurfaces
near-field Huygens metasurface
Slot antennas
substrate-integrated waveguide (SIW)
Surface impedance
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Summary:This paper proposes a low-profile metasurface antenna capable of beam direction manipulation that operates within the millimeter-wave frequency spectrum. The design encompasses a non-offset substrate-integrated waveguide (SIW) slot array antenna and a near-field Huygens metasurface. The SIW slot array antenna functions as a source, providing spherical wave excitation, whereas the near-field Huygens metasurface enable precise tailoring of the phase distribution above the SIW slot array antenna. The Huygens response of the meta-atom and the suppression of the open stopband (OSB) in the non-offset SIW slot array antenna are comprehensively illustrated. A simulation model that integrates the functionalities of both wave port and Floquet port is introduced to achieve more accurate electromagnetic responses from the near-field Huygens meta-atom; thereby facilitating enhanced control over electromagnetic wave propagation. To validate the aforementioned benefits, three prototype antennas with varying pointing angles were meticulously designed, fabricated, and experimentally evaluated. The results exhibit good concordance between the simulations and measurements across several key parameters, including the reflection coefficient and radiation pattern.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2024.3468637