4-SHAPED MIMO ANTENNA WITH ENHANCE ISOLATION

Author’s Name : Sachin S Khade | S.L Badjate

Volume 02 Issue 04  Year 2015  ISSN No:  2349-252X  Page no: 18-23

Abstract – A compact 4-shaped multiple-input-multiple-output (MIMO) antenna is proposed with parasitic element and DGS. The overall size of proposed MIMO antenna system is 50×50×1.6 mm3. A defected ground plane structure (DGS) etched into the ground plane to improve mutual coupling effect between two antennas is reduced and isolation is increased. It covers two frequency bands, lower frequency band was 3.18-3.92 GHz and higher frequency band was 4.9-5.89 GHz.The reflection coefficient of antenna is less than -10dB at resonant frequencies. The isolation observed at lower band and higher band is below -25 dB which indicated there is good isolation in between two antenna element. The maximum gain of an array antenna is found 2.9dBi . 

Keywords –Mutual coupling, isolation, diversity gain, multiple-input multiple output (MIMO) antenna, radiation pattern, Correlation coefficient