研究目的
Investigating the fast evaluation of superdirective performance of coupled meta-atoms and proposing an alternative method for finding the directivity from a faster polar scan over a circular path.
研究成果
The analytical expressions demonstrate a linear relationship between directivity D and planar directivity D2D within a certain range of inter-element distance, and the optimum frequencies yielding superdirective values of D2D and D are very close. This enables a fast retrieval of the directivity from 2D measurements alone.
研究不足
The study is limited to linear arrays of two antennas and does not extend to arrays comprising a larger number of elements or different types of meta-atoms.
1：Experimental Design and Method Selection:
The study involves deriving analytical expressions for maximum achievable values of directivity and planar directivity (D2D) for dipole arrays.
2：Sample Selection and Data Sources:
The research focuses on linear arrays of two antennas, either for a dipole array or an isotropic array.
3：List of Experimental Equipment and Materials:
Not explicitly mentioned.
4：Experimental Procedures and Operational Workflow:
The methodology includes proposing an alternative method for finding the directivity from a faster polar scan over a circular path.
5：Data Analysis Methods:
Analytical expressions are derived and their relationships are studied.
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