研究目的
To propose a modified matrix method for planar phased array calibration that reduces measurement time and minimizes calibration errors through an optimized array excitation strategy.
研究成果
The modified matrix method effectively reduces measurement time and data processing complexity for planar phased array calibration, with calibration accuracy improvable through array excitation optimization. Experimental results confirm the method's effectiveness and the impact of array excitation on calibration accuracy.
研究不足
The method introduces some calibration errors due to the simplification of the phased array model. The calibration accuracy is influenced by the array excitation, requiring optimization for minimal errors.
1：Experimental Design and Method Selection:
The study employs a modified matrix method for phased array calibration, simplifying the phased array model to reduce measurement time.
2：Sample Selection and Data Sources:
An eight-element L-band microstrip antenna array is used for measurement, with the NSI near-field measurement system.
3：List of Experimental Equipment and Materials:
Includes a wooden support, an eight-way Wilkinson power divider, coaxial cables with different lengths for phase delays, an eight-element microstrip antenna array, and an open-ended waveguide as the measurement probe.
4：Experimental Procedures and Operational Workflow:
The experimental procedure involves constructing a simulation model, measuring near-fields of antenna elements, and calculating array excitations under different phase delays.
5：Data Analysis Methods:
Calibration errors are analyzed based on the differences between calculated and true array excitations.
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