研究目的
To propose a novel design of a wideband compact circularly polarized circular antenna array for satellite TV reception that overcomes the drawbacks of traditional dish antennas.
研究成果
The proposed circularly polarized circular antenna array is suitable for satellite TV reception with its low profile, broadband, and electronically steered beam. It offers a practical solution for vertically mounted applications, achieving LOS communication with satellites like Astra in the UK.
研究不足
The study focuses on the Ku-band for satellite TV reception and may not cover other frequency bands or applications. The practical implementation requires precise alignment and may be sensitive to environmental conditions.
1：Experimental Design and Method Selection:
The design involves a circularly polarized spiral antenna element with a wideband impedance matching and axial ratio bandwidths. The array is designed to have a fixed electronically steered beam upwards for satellite communications.
2：Sample Selection and Data Sources:
The study uses a 16-element circular sub-array and extends to sub-arrays with different numbers of elements (8, 16, 24, 32, and 40).
3：0).
List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: The antenna consists of three stacked layers: an FR-4 substrate, a foam layer, and a Rogers RT5880 substrate. A 50 Ω coaxial cable is used for connection.
4：Experimental Procedures and Operational Workflow:
The design is simulated using CST MW Studio to evaluate VSWR, AR, realized gain, and total efficiency.
5：Data Analysis Methods:
The performance is analyzed based on impedance matching, axial ratio, radiation patterns, and efficiency across the desired frequency band.
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