研究目的
To propose a novel miniaturized cavity-backed sector antenna with bandwidth enhancement for VHF applications in UAV systems.
研究成果
The proposed miniaturized cavity-backed sector antenna achieves significant size reduction and bandwidth enhancement, making it suitable for UAV applications. It features a compact size, wide bandwidth, and good directivity, with a simulated gain of more than 2dBi and an impedance bandwidth of 31%.
研究不足
The study focuses on simulation results; practical implementation and environmental effects on antenna performance are not discussed.
1：Experimental Design and Method Selection:
The antenna design involves two symmetrical meandering lines, a planar double-sector patch, and a U-shaped backed-cavity for size reduction and directivity improvement. ANSYS HFSS software is used for simulation.
2：Sample Selection and Data Sources:
The design is based on a reference antenna, modified with meandering lines and a U-shaped cavity for enhanced performance.
3：List of Experimental Equipment and Materials:
FR4 substrate (εr = 4.4, tanδ = 0.02) with thickness of 1.6mm, U-shaped metal backed-cavity.
4：4, tanδ = 02) with thickness of 6mm, U-shaped metal backed-cavity.
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The antenna is excited at the center by a feeding network, with the FR4 substrate mounted onto the U-shaped cavity. Parameters like the order of meandering lines (n) and their length (h2) are optimized.
5：Data Analysis Methods:
Simulated results for return loss, impedance, and gain are analyzed to evaluate performance.
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