Performance of Multiple-Feed Metasurface Antennas with Different Numbers of Patch Cells and Different Substrate Thicknesses

Authors

  • Niamat Hussain Department of Electrical and Computer Engineering Ajou University, Suwon 16499, Republic of Korea
  • Ikmo Park Department of Electrical and Computer Engineering Ajou University, Suwon 16499, Republic of Korea

Keywords:

Antenna array, metamaterials, metasurface, terahertz antennas, wide gain bandwidth

Abstract

The design and performance of low-profile, multiple-feed metasurface antennas with different numbers of patch cells and different substrate thicknesses at a terahertz frequency are presented in this paper. The utilized antenna designs consist of a periodic array (N × M) metallic square-patch metasurface and a planar feeding structure, which are both patterned on an electrically thin, high-permittivity GaAs substrate. The antenna gain increased in a linear fashion with an increasing number of patch cells, which were directly fed by the slit feedline. A 3-dB gain increment was observed irrespective of the substrate thickness when the number of patch cells was doubled. However, the 3-dB gain bandwidth as well as the radiation efficiency changed significantly with varying substrate thicknesses. The described antenna structure offers useful characteristics by means of a combination of different substrate thicknesses and patch numbers. In addition, the proposed antenna design features a number of benefits, including a low profile, mechanical robustness, easy integration into circuit boards, and excellent suitability for low-cost mass production.

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Published

2021-07-25

How to Cite

Niamat Hussain, & Ikmo Park. (2021). Performance of Multiple-Feed Metasurface Antennas with Different Numbers of Patch Cells and Different Substrate Thicknesses. The Applied Computational Electromagnetics Society Journal (ACES), 33(03), 298–304. Retrieved from https://journals.riverpublishers.com/index.php/ACES/article/view/9217

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