研究目的
Investigating the design and performance of 45? linearly polarized and circularly polarized high-scanning-rate leaky-wave antennas based on slotted substrate integrated waveguide for imaging applications and automotive radar.
研究成果
The proposed 45? LP and CP LWAs achieve high scanning rates and closed stopbands simultaneously, making them attractive for imaging applications. The design principles and techniques are validated through simulation and experimental results, demonstrating their potential for high-performance imaging systems.
研究不足
The scanning range of the proposed antennas is relatively small, slightly larger than 60?, which may limit applications requiring a larger view or full half-space scanning.
1：Experimental Design and Method Selection:
The study involves designing leaky-wave antennas with high scanning rates and continuous scanning capability across the broadside, utilizing slow-wave substrate integrated waveguide structures with periodic perturbations to convert slow wave mode to leaky wave mode.
2：Sample Selection and Data Sources:
The antennas are designed using Rogers RT 5880 printed circuit board, with specific dimensions and parameters for slots and vias.
3：List of Experimental Equipment and Materials:
Includes CST Microwave Studio for simulation, Rogers RT 5880 substrate, and specific dimensions for slots and vias.
4：Experimental Procedures and Operational Workflow:
The design involves creating symmetric and asymmetric unit-cell shapes, simulating dispersion diagrams, and fabricating prototypes for measurement.
5：Data Analysis Methods:
Performance is evaluated through S-parameters, efficiency, gain, and radiation patterns, comparing simulated and measured results.
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