A design methodology for impedance-matched Electrically Small parasitic superdirective arrays

This paper presents a method for designing impedance-matched parasitic superdirective Electrically Small Antenna (ESA) arrays. The proposed method uses the current excitation coefficients for calculating the required loads for the parasitic elements. The proposed method is validated via the design of a parasitic two-element superdirective ESA. The array has total dimensions of 54×24mm² and it achieves a maximum directivity of 7dBi.