Analysis of Scattering Characteristics of the Cylindrical Conformal Arrays With Variable Curvature Based on Infinitesimal Dipole Model

This letter proposes a method for analyzing the scattering characteristics of cylindrical conformal arrays with variable curvature based on the infinitesimal dipole model. This method uses osculating circles to fit the variable curvature array structure, controls the number of osculating circles, constructs feature elements by setting the fitting error threshold, and constrains the infinitesimal dipole in the cylindrical coordinate system to better match the feature elements. The proposed method considers the influence of array element structure deformation and mutual coupling effects, reduces the preprocessing time of equivalent elements one by one, and can accurately evaluate the scattering characteristics of variable-curvature conformal arrays. The measurement results of two examples verify the correctness of the proposed method.