Low-Dispersion Metamaterials for Wideband Gradient-Index (Grin) Lens Antenna

Master's Thesis


Gradient-index (GRIN) lens antennas leverage spatially varying refractive structures to generate high directivity beams. The lens antennas have the advantages of low loss, low power consumption and wide bandwidth over other kinds of high-directivity antennas, among which the low-profile flat GRIN lens antenna is compelling in millimeter-wave (MMW) 5G and satellite communication applications. The proposed 40 GHz GRIN metamaterial in this thesis is based on printed circuit board (PCB) technology, with relatively low cost compared with other fabrication methods such as layered dielectrics and perforated dielectrics. Besides, the proposed unit-cell design also has low-dispersion characteristics, allowing the wideband operation of the GRIN lens. We address the unit-cell characterization and homogenization by the Nicolson-Ross-Weir (NRW) method, and the measurement results exhibit good agreement with the simulation. Finally, a test GRIN lens is designed, simulated and measured in Ka-band.


Attribute NameValues
Author Jiahao Huang
Contributor Jonathan D. Chisum, Research Director
Contributor Scott Howard, Committee Member
Contributor Lei Liu, Committee Member
Degree Level Master's Thesis
Degree Discipline Electrical Engineering
Degree Name Master of Science in Electrical Engineering
Banner Code
  • MSEE

Defense Date
  • 2022-07-01

Submission Date 2022-07-11
  • Metamaterial

  • GRIN lens

  • Lens antenna

  • English

Record Visibility Public
Content License
  • All rights reserved

Departments and Units
Catalog Record

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