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Related Experiment Video

Updated: Oct 22, 2025

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
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A Simple Linear-Type Negative Permittivity Metamaterials Substrate Microstrip Patch Antenna.

Wei-Hua Hui1, Yao Guo1, Xiao-Peng Zhao1

  • 1Department of Applied Physics, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an 710129, China.

Materials (Basel, Switzerland)
|August 27, 2021
PubMed
Summary
This summary is machine-generated.

Linear-type negative permittivity metamaterials enhance microstrip patch antenna (MPA) performance. These metamaterials improve gain, narrow beam width, and increase effective area by suppressing surface waves and boosting forward radiation.

Keywords:
gainmetamaterialsmicrostrip patch antennanegative permittivity

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Area of Science:

  • Electromagnetics and Metamaterials
  • Antenna Engineering

Background:

  • Microstrip patch antennas (MPAs) are widely used but can suffer from limitations in gain and radiation patterns.
  • Metamaterials offer unique electromagnetic properties not found in natural materials.

Purpose of the Study:

  • To design and investigate the impact of linear-type negative permittivity metamaterials (NPMMs) on MPA performance.
  • To evaluate the effectiveness of NPMMs in enhancing antenna gain, beam width, and effective area.

Main Methods:

  • Design of a microstrip patch antenna loaded with linear-type NPMMs.
  • Electromagnetic simulations across various frequency bands (1-10 GHz).
  • Fabrication and measurement of antennas operating at 5.0 GHz.

Main Results:

  • Simulations showed NPMMs' negative permittivity in the 1-10 GHz range.
  • Measured antennas at 5.0 GHz exhibited a 2.12 dB gain enhancement.
  • H-plane half-power beam width (HPBW) narrowed by 14°, and effective area increased by 62.5%.

Conclusions:

  • Linear-type NPMMs effectively suppress surface waves on MPAs.
  • Loading NPMMs significantly improves forward radiation and overall antenna performance.
  • The study demonstrates a viable method for enhancing MPA characteristics using metamaterials.