DefinePK

Abstract

This paper proposes the analytical comparison analysis of the mutual coupling for a large array antenna between a single-polarized and a dual-polarized type antenna with the existence of a spatial diversity. The large array antenna using multi dipole antennas with different configurations and antenna spacing are studied. The result shows that the improvement of the mutual coupling is at least 7 dB by using the dual-polarized star configuration with the slanted ± 450 dipole antennas and antenna spacing; D = ?/2. In addition, these different antenna configurations provide coupling result improvement that is comparable to the square lattice configuration with D = ? and this offers a significant size reduction for the large array antenna. Even though, the mutual coupling is the main interest in this study, other antenna parameters such as gain and beamwidth are included in this paper to provide a more comprehensive analysis.