Ultra wide band monopole planar MIMO antenna for portable devices

Abstract

A Ultra Wide Band MIMO Antenna is designed whose length is 26mm and the width is 40mm. Its has a features of two planar monopole which is micro strip-fed, to achieve the good isolation. The extended ground stubs are combined in the ground plane on the other face to enhance isolation and increase impedance bandwidth. To form a common ground by ground planes are connected together by using a short ground strip. Performance analysis of an antenna is analyzed using the various parameters like reflection coefficient, radiation pattern, efficiency. The designed antenna is operates with in 3.1 to 10.6GHZ, for portable devices applications with lower mutual coupling loss and the envelope correlation coefficient is less than 0.2. This type of antenna is widely used in UWB portable applications.