研究目的
To present a wideband high-gain dual-circularly-polarized (CP) antenna with a simple configuration by applying the Fabry-Perot resonator antenna concept and combining it with a linear-to-circular polarization (LP-CP) metasurface polarizer.
研究成果
By incorporating a wideband high-gain dual linearly-polarized Fabry-Perot resonator antenna with a LP-CP metasurface polarizer, a wideband high-gain dual-CP antenna can be obtained. The antenna has a simple structure and less design difficulty while maintains a wideband and high-gain performance.
研究不足
The current design demonstrates the validation of the proposed method and antenna structure. The gain can be further improved by designing the truncated superstrate and/or using other methods.
1：Experimental Design and Method Selection:
The design involves a dual-linearly-polarized Fabry-Perot resonator antenna and a LP-CP metasurface polarizer, combined to achieve a wideband high-gain dual-CP antenna. Ansys HFSS is used for simulations.
2：Sample Selection and Data Sources:
The antenna design is validated through simulations and experiments, with prototypes fabricated and measured using a far-field testing system in an anechoic chamber.
3：List of Experimental Equipment and Materials:
FR4 and Rogers 5880 substrates are used, with dielectric constants of 4.4 and 2.2 respectively, and thickness of 0.8 mm. The metasurface polarizer is made up of two identical stacked dielectric slabs and metallic patterns.
4：4 and 2 respectively, and thickness of 8 mm. The metasurface polarizer is made up of two identical stacked dielectric slabs and metallic patterns.
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The design process includes optimizing the slot-fed patch antenna, designing the Fabry-Perot cavity, and integrating the LP-CP polarizer. The final prototype is measured for performance.
5：Data Analysis Methods:
The performance is analyzed based on impedance bandwidths, axial ratio, gain, and isolation between ports.
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