研究目的
To propose a high-gain, ultra-wide band circularly polarized array with low radar cross section (RCS) using polarization conversion metasurface (PCM) coating.
研究成果
The proposed array with PCM coating achieves low RCS, high CP gain, and low profile properties, making it a suitable candidate for applications requiring these characteristics. The design's performance is validated through both simulations and measurements.
研究不足
The study focuses on a specific frequency range (10.5 GHz to 35.1 GHz) and may not cover all potential applications or environments. The design's effectiveness outside this range is not verified.
1：Experimental Design and Method Selection:
The study employs a chessboard-like coating formed by arrow-shaped PCM elements for RCS reduction and gain enhancement. Full-wave EM simulation software HFSS 15.0 is used for performance calculations.
2：0 is used for performance calculations.
Sample Selection and Data Sources:
2. Sample Selection and Data Sources: The proposed array is composed of dipoles, chessboard-like PCM coating, and feeding network. Prototypes are fabricated for measurement.
3：List of Experimental Equipment and Materials:
Rogers-5880 substrate with permittivity of 2.2 and loss tangent of 0.0009, arrow-shaped PCM elements, dipoles, and a Wilkinson power divider.
4：2 and loss tangent of 0009, arrow-shaped PCM elements, dipoles, and a Wilkinson power divider.
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The array's performance is validated through simulations and measurements in an anechoic chamber, focusing on reflection coefficient, axial ratio, and radiation patterns.
5：Data Analysis Methods:
The study analyzes the array's impedance matching, axial ratio bandwidth, and RCS reduction through simulation and measurement data.
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