Flexible (2 $\times $ 1) MIMO antenna with electromagnetic band gap unit cell for WiMAX applications

Authors : HUSSEIN QASIM ALFAYYADH, ABDULGHAFOR ABDULGHAFAR ABDULHAMEED, ABDULKAREEM SWADI ABDULLAH, HAIDER MOHAMMED ALSABBAGH

Pages : 3061-3072

View : 15 | Download : 12

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :A flexible insert ignore into journalissuearticles values(2 $\times $ 1); multiple-input, multiple-output insert ignore into journalissuearticles values(MIMO); antenna with an electromagnetic band gap insert ignore into journalissuearticles values(EBG); unit cell is designed and measured. The proposed MIMO antenna is based on a circular slotted patch antenna to work at 3.5 GHz. An EBG unit cell is used to reduce the effect of the inherent mutual coupling produced between the closely spaced MIMO elements. The results show that the measured mutual coupling has been reduced by -11.6 dB insert ignore into journalissuearticles values(from -10 dB to -21.6 dB);, and the measured realized gain has been increased by 1.074 dBi insert ignore into journalissuearticles values(from 1.59 dBi to 2.66 dBi);. An improvement by 2.4% in the simulated efficiency was also noticed insert ignore into journalissuearticles values(from 78.7% to 81.1%);. The proposed antenna also passed the flexibility test without a noticeable change in the S-parameter at the desired frequency.
Keywords : Antennas, electrical band gap, flexible MIMO, mutual coupling, WiMAX