研究目的
To report a 5:1 frequency bandwidth aperture array antenna based on a new planar structure with dual polarization implemented with high cross-polarization discrimination over ±45? scan angle from zenith.
研究成果
The C-ORA is a good solution to produce wide bandwidth, dual polarizations, and high scan angles while maximizing the element spacing being used. The results confirm it as a low cost, high performance front-end solution.
研究不足
The compact range limits the lowest measurable frequency. The design requires optimization of the ring structure to combat inductance at high frequencies.
1：Experimental Design and Method Selection:
The design uses a mutual coupled interconnected ring structure to extend the operational frequency band.
2：Sample Selection and Data Sources:
A 10 by 10 element array prototype was manufactured.
3：List of Experimental Equipment and Materials:
The active layer is made by chemical etching on N9000 PTFE, and the passive layer is etched on polyester sheet. Expanded Polystyrene foam slabs were used to fill the space between layers.
4：Experimental Procedures and Operational Workflow:
The array was measured in a compact range, and directional EMC Test-Antenna HyperLOG was used for radiation pattern measurements.
5：Data Analysis Methods:
The effectiveness of the design was demonstrated by monitoring the surface current and comparing simulated and measured results.
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