A decoupling method for MIMO terminal antenna using branch element without susceptance circuits

Decoupling method of 2 × 2 MIMO by connecting two element antennas between feed points are developed. Especially its method of connecting by capacitor or inductor with susceptance value is noted. In this paper, mechanism of decoupling method by connecting antennas is analyzed and a new decoupling method using branch elements without connecting the antennas is proposed.