研究目的
Investigating the design and implementation of a high-efficiency, wideband aperiodic array of uniformly-excited slotted waveguide antennas for point-to-point communication, meeting ETSI class-II side-lobe-level requirements across all planes and frequencies.
研究成果
The designed aperiodic slotted waveguide antenna array meets ETSI class-II requirements with high aperture efficiency and wide bandwidth. The feed network successfully compensates for phase differences and provides unequal power levels, ensuring uniform excitation of all slot antennas.
研究不足
The study acknowledges that the measured side-lobe levels are higher than simulated at some angles, possibly due to slight differences in power ratios in the feeding network and fabrication imperfections.
1：Experimental Design and Method Selection:
The study employs a Compressive Sensing approach to determine the optimal separation and number of slots per waveguide for the aperiodic array layout. A 16-way analog beamforming network is designed to provide non-uniform and in-phase excitation of the waveguide channels.
2：Sample Selection and Data Sources:
The design is validated through simulations and measurements of the manufactured antenna array.
3：List of Experimental Equipment and Materials:
The antenna array is composed of three aluminum layers manufactured by milling and vacuum brazing.
4：Experimental Procedures and Operational Workflow:
The array's performance is evaluated through measurements of reflection coefficients, radiation patterns, gain, and efficiency across the operational bandwidth.
5：Data Analysis Methods:
The measured data is compared with simulation results to validate the design's performance.
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