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Metasurface Source Antenna Gain Improvement Using Simple Side Metal Structure.

HongGuk Bae¹, JaeGon Lee², SangWook Park³

¹Department of ICT Convergence, Soonchunhyang University, Asan 31538, Republic of Korea.

Sensors (Basel, Switzerland)

|October 26, 2024

Summary

Researchers improved transmitarray (TA) antenna efficiency by enhancing the source antenna gain using a novel side metal structure. This boosts performance for low-profile TA designs.

Keywords:

gain enhancement metasurface patch source side metal structure side plate sidewall transmitarray

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Area of Science:

Electromagnetics and antenna engineering.
Metasurface applications in microwave and RF systems.

Background:

Transmitarray (TA) antennas are being developed using metasurfaces for low-profile designs.
Patch antennas are suitable source antennas for TAs but require higher gain for efficiency.

Purpose of the Study:

To enhance the gain of a low-gain patch antenna for improved transmitarray efficiency.
To investigate the effect of a side metal structure on antenna performance.

Main Methods:

A side metal structure was applied to a metallic cross-type slot transmitarray.
This structure acted as a resonant element and reflector for electromagnetic waves.
Analyzed changes in center frequency and gain.

Main Results:

The side metal structure significantly improved the gain of the source antenna.
Achieved a total gain improvement of 4.63 dB for the source antenna.
Observed changes in the center frequency due to the added structure.

Conclusions:

The developed side metal structure effectively enhances source antenna gain for transmitarrays.
This method offers a pathway to improved efficiency in low-profile TA antennas.
Potential applications include generating diverse source waves and future gain enhancement research.