研究目的
To present a novel wideband high-gain circularly-polarised (CP) antenna based on Fabry-Perot cavity and a short conical horn for wideband and high-gain operation.
研究成果
The hybrid design based on the Fabry-Perot resonator antenna concept and a short conical horn has been successfully applied to the design of CP antennas, resulting in a wideband high-gain CP antenna. The measured results show a 3-dB AR bandwidth of 12%, a 1-dB gain bandwidth of 13.9%, and a peak gain of 16.3 dBi.
研究不足
The gain enhancement using Fabry-Perot cavity is limited, and further enhancement may cause deterioration of other antenna performance, such as impedance matching.
1：Experimental Design and Method Selection:
The design starts from a simple CP slot antenna, which is then used to feed a Fabry-Perot cavity to obtain a wideband high-gain CP Fabry-Perot resonator antenna. A conical horn is incorporated to further enhance the gain.
2：Sample Selection and Data Sources:
The antenna prototype is fabricated and measured in an anechoic chamber.
3：List of Experimental Equipment and Materials:
F4B dielectric slabs, microstrip-fed slot antenna, Wilkinson power divider, conical horn.
4：Experimental Procedures and Operational Workflow:
The antenna is simulated using Ansys HFSS, and measurements are conducted to validate the design.
5：Data Analysis Methods:
The impedance matching, axial ratio, and gain are analyzed to evaluate the antenna performance.
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