UWB Dual-Slant Polarized Radiation Reconfigurable Slot-Loaded Antenna Array

This paper discusses the design of a 2 x 2 dual-slant polarized UWB slot-loaded antenna array. A novel constellation of antenna elements has been realized, such that two symmetrical slot-loaded patches face each other at 45° from the x and y-axis. The excitation of two opposite patches excites three dual beam modes simultaneously. The antenna array shows 35% impedance bandwidth and produces a dual beam with slant polarization (+1- 45°) and a peak gain of 5 dBi. By controlling the phase of opposite ports, the array produces a single directional beam with a symmetrical radiation pattern, stable polarization, and peak gain of 8.5 dBi. A simple feed arrangement enables the dual polarization in the MIMO antenna array. The CMA analysis revealed the effect of the radiation characteristics of multiple modal fields on the radiation pattern of the antenna array.