Reduction in Mutual Coupling Using Modified Triangular 2×2 MIMO with Stub

In wireless communication use of multiple antennas is an effective way of improving reliability and increase in channel capacity. One of the problems with such multi input multi output antenna systems is mutual coupling between antenna elements. This increases with higher frequency, dielectric constant and thickness of substrate. High mutual coupling would cause signal loss and increase the signal correlation between the channels. This paper presents simulation and design of a compact tapered triangular 2×2 multi input multi output patch antenna for reducing mutual coupling. This proposed system is used in the area of WLAN and Wi-MAX. It is found that simulated and measured results are nearly equal.