Evaluation of the active impedances in large Interleaved Parasitic Arrays Antennas (IPAAs)

This paper explores the performances of finite antenna arrays optimized using the Interleave Parasitic Arrays Antenna (IPAA) concept. A prototyped IPAA of 36 elements is used to compare the simulated performances obtained using the scattering matrix extraction from the periodic model method and measurements with great accordance. Then, two large arrays composed of 1024 and 4096 elements are studied using the same simulation method. The results show that the IPAA concept is particularly suited for large arrays, with only a few edge elements showing degraded performances.