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High-Gain Dual-Polarization Microstrip Antenna Based on Transmission Focusing Metasurface
Yibo Sun1, Bin Cai1, Lingling Yang2
1School of Information Science and Engineering, Engineering Research Center for Metallurgical Automation and Detecting Technology Ministry of Education, Wuhan University of Science and Technology, Wuhan 430081, China.
Materials (Basel, Switzerland)
|August 10, 2024
Summary
This study introduces a novel dual-polarization metasurface (MS) antenna system that significantly boosts antenna gain for both circular polarization (CP) and linear polarization (LP) waves. This breakthrough enhances wireless communication systems by improving signal transmission efficiency.
Area of Science:
- Electromagnetics and Wave Propagation
- Antenna Theory and Design
- Metamaterials Engineering
Background:
- Microstrip antennas (MAs) are widely used but often have limitations in gain and polarization flexibility.
- Achieving high gain for dual-polarized signals in a single antenna system is a significant challenge in wireless communications.
Purpose of the Study:
- To propose and validate a novel transmission-mode metasurface (MS) antenna system for enhanced dual-polarization, high-gain radiation.
- To improve the performance of a single-feed microstrip antenna (MA) by integrating it with a focusing metasurface.
Main Methods:
- A single-feed MA with dual-layer coaxial-fed tangential patches was designed for initial CP and LP radiation.
- A dual-polarization transmission focusing metasurface (MS) was designed and numerically simulated.
- The MA was positioned at the focal point of the MS to create the integrated antenna system.
Main Results:
- The integrated MS antenna system achieved significantly enhanced gains: 12.9 dBic for CP at 5.6 GHz and 14.8 dBi for LP at 13.7 GHz.
- Original MA achieved gains of 3.5 dBic (CP) and 4 dBi (LP).
- Measurement results closely matched simulation predictions, confirming the system's effectiveness.
Conclusions:
- The proposed dual-polarization focusing MS antenna system effectively enhances antenna gain for both CP and LP waves.
- This technology offers a practical solution for improving antenna performance in modern wireless communication systems.
- The work highlights the potential for dual-polarization systems in high-speed data transmission.
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