研究目的
To reduce the dispersion of gap waveguide leaky-wave antennas by introducing a dispersive metamaterial prism made of holes.
研究成果
The design successfully reduces the variation of the main beam direction in leaky-wave antennas using a holey metasurface prism, demonstrating a small variation of the radiation angle and achieving good performance from 25 GHz to 30 GHz.
研究不足
The design faces challenges due to the dispersion characteristics of the holes and the size of the unit cell, which may affect the robustness and performance at higher frequencies.
1：Experimental Design and Method Selection:
The study involves combining a holey metasurface prism with a leaky-wave antenna in gap waveguide technology to reduce the beam squinting effect. The dispersion characteristics of the hole unit cell are analyzed to achieve minimal variation in the main beam direction.
2：Sample Selection and Data Sources:
A prototype is designed at the Ka band, and its performance is measured and compared with simulation results.
3：List of Experimental Equipment and Materials:
The prototype consists of a leaky-wave antenna with a holey metasurface prism, manufactured and assembled for experimental validation.
4：Experimental Procedures and Operational Workflow:
The antenna's radiation patterns and S-parameters are measured and compared with simulations to validate the design.
5：Data Analysis Methods:
The equivalent refractive indices of the leaky-wave antenna and the prism are calculated to analyze the dispersion compensation effect.
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