研究目的
To research and develop a high-performance active electronically scanned array (AESA) antenna for regional jets in the Ka band, focusing on the transmission side configuration, to improve satellite communication performance for small and medium-sized aircraft.
研究成果
The 16-element array antenna prototype for transmission was successfully fabricated and evaluated, meeting required EIRP and off-axis radiation characteristics. The results confirm the feasibility of the AESA configuration for aircraft applications, with plans for future development of a 64-element array to achieve a scalable antenna system.
研究不足
The study is a fundamental evaluation with a small 16-element array; scalability to larger arrays (e.g., 64 elements) is not yet demonstrated. Beam width issues were noted where beam direction and peak angle did not match, indicating potential optimization needs for precise beam control.
1：Experimental Design and Method Selection:
The study involved designing and fabricating a 16-element array antenna prototype to examine the transmission side configuration of an AESA system. Theoretical models for beam scanning and EIRP allocation were used.
2：Sample Selection and Data Sources:
A prototype antenna with 16 elements was fabricated and evaluated. Data were collected through measurements of radiation patterns and EIRP at various beam scan angles.
3：List of Experimental Equipment and Materials:
The antenna consists of BFN-MAIN and BFN-SUB substrates, patch antenna elements, Front-End ICs (FE-ICs) with variable amplifiers and phase shifters, QMIX-ICs for signal conversion, and interposer substrates. Specific models and brands are not detailed in the paper.
4：Experimental Procedures and Operational Workflow:
The antenna was fabricated, and its performance was evaluated by measuring radiation patterns at 30 GHz for different scan angles (e.g., 0°, 30°, 65°). Phase values were set via operation software for beam scanning.
5：Data Analysis Methods:
EIRP allocation was calculated based on measured results, and off-axis radiation characteristics were analyzed to ensure compliance with ITU-R S.524-9 standards.
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