Diversity and its applications in ultra-wideband antennas

The diversity performance is desired in the antenna design for UWB systems, especially in indoor application scenarios. To achieve the high isolation between the elements within a limited space, polarization and pattern diversity can be employed in the antenna design. Besides the conventional average envelope correlation coefficients, the 2- and 3-D correlation patterns are able to provide more precise information which is helpful to the optimization of the antenna configurations.