研究目的
To introduce a novel type of horn antenna constructed using artificial plasma sheets that can replace conventional metallic horn antennas in microwave applications due to its featherlight weight and reduced problems related to wind resistance and rain accumulation.
研究成果
The proposed featherlight plasma horn antenna constructed using artificial negative permittivity metamaterial medium is capable of producing almost the same radiation characteristics as that of an equivalent metallic horn, with the added advantages of considerable weight reduction and reduced structural deformities due to wind and rain. This makes it ideal for applications like satellite communications and astronomical data collection.
研究不足
A slight decrease in axial gain (? 2 dB) is observed compared to its equivalent metallic horn, which may not be a major concern considering its advantages. The performance deviates if the radius of the metallic wires is increased beyond 1 mm.
1：Experimental Design and Method Selection:
The study involves the design and fabrication of a horn antenna using artificial plasma sheets made of thin metallic wires arranged in a specialized manner to mimic the properties of a conventional metallic horn antenna.
2：Sample Selection and Data Sources:
The antenna is fabricated using thin copper wires of radius 250 μm arranged with a periodicity of 5 mm in the H walls and an angular spacing of 2° with respect to the apex of the horn in the E walls.
3：List of Experimental Equipment and Materials:
Thin copper wires, pyramidal frame made of low loss dielectric strips, vector network analyzer, anechoic test box.
4：Experimental Procedures and Operational Workflow:
The radiation patterns of the plasma horn antenna are measured using a vector network analyzer inside an anechoic test box and compared with those of an equivalent metallic horn antenna.
5：Data Analysis Methods:
The radiation patterns obtained are analyzed for similarities and differences with conventional metallic horn antennas, focusing on side lobe width and half power beam widths.
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