研究目的
Investigating the design and performance of a phase-frequency scanned array using composite right/left-handed (CRLH) waveguide leaky-wave antennas (LWAs) for two-dimensional (2D) beam steering capability.
研究成果
The designed phase-frequency scanned array using CRLH waveguide LWAs demonstrates significant 2D beam steering capability with high gain and relatively low sidelobe levels. The array simplifies the feed system compared to traditional 2D scanning arrays. Future improvements could focus on reducing interelement spacing to increase the phase-scan range.
研究不足
The phase-scan range of the array is limited due to interelement spacing constraints, leading to grating lobes when the mainlobe scans in certain directions. The interelement spacing is restricted by the size of the waveguide, affecting the scanning range.
1：Experimental Design and Method Selection:
The study involves the design of a phase-frequency scanned array using CRLH waveguide LWAs, focusing on achieving 2D beam steering capability. The methodology includes full-wave simulations to verify the design.
2：Sample Selection and Data Sources:
The array consists of 32 frequency scanning CRLH LWAs fed by a phased feed system.
3：List of Experimental Equipment and Materials:
The design utilizes CRLH waveguide LWAs with meandering long slots for radiation, and a 32-way broadband waveguide power divider for feeding the array.
4：Experimental Procedures and Operational Workflow:
The design process includes the synthesis of high-performance CRLH LWA with low sidelobe levels, the arrangement of LWAs into an array, and the simulation of radiation patterns.
5：Data Analysis Methods:
The performance of the array is analyzed through full-wave simulations, focusing on beam steering range, beamwidth, and sidelobe levels.
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