Gain Enhancement Planar Lens Antenna based on Wideband Focusing Gradient Meta-surface

Authors

  • Qiming Yu College of Electronic and Information Engineering Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China
  • Shaobin Liu College of Electronic and Information Engineering Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China
  • Zhengyu Huang College of Electronic and Information Engineering Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China
  • Xiangkun Kong College of Electronic and Information Engineering Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China
  • Yuehong Hu College of Electronic and Information Engineering Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China
  • Yongdiao Wen College of Electronic and Information Engineering Nanjing University of Aeronautics and Astronautics, Nanjing, 211106, China

Keywords:

Broadband gain enhancement, focusing gradient meta-surface, lens antenna, transmissive

Abstract

A three-layered transmitting focusing gradient meta-surface (FGMS) has been proposed, which can achieve broadband gain enhancement from 8.2 GHz to 10 GHz. The element of broadband transmitting FGMS has high transmitting efficiencies that over 0.7 and achieve [0, 2π] phase range with a flat and linear trend in the operating band. The FGMS can transform the spherical waves into plane waves. Three patch antennas working at 8.2 GHz, 9.1 GHz, and 10 GHz respectively are placed the focus of broadband FGMS as the spherical-wave source to build a broadband planar lens antenna system. It achieves a simulation gain of 15.44 dBi which is 7.51dB higher than that of the bare patch antenna at 10 GHz with satisfying SLLs and beamwidths. However, it enhanced the gain of the bare patch antenna in a wide operating band. Finally, the FGMS and the patch antenna are fabricated and measured. The measured results are in good agreement with the simulations.

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Published

2021-11-04

How to Cite

[1]
Q. . Yu, S. . Liu, Z. . Huang, X. . Kong, Y. . Hu, and Y. . Wen, “Gain Enhancement Planar Lens Antenna based on Wideband Focusing Gradient Meta-surface”, ACES Journal, vol. 36, no. 06, pp. 650–656, Nov. 2021.

Issue

2021: Vol 36 Iss 6

Section

Articles