Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6878957 | AEU - International Journal of Electronics and Communications | 2018 | 17 Pages |
Abstract
In this paper, mutual coupling reduction between elements of UWB MIMO antenna using small size uniplanar EBG is presented. Proposed UWB antenna geometry consists of two circular shaped monopole radiator swith a slot in ground plane for proper impedance matching. A UC-EBG (Uniplanar Electromagnetic Band Gap) cell of size 6.8â¯mmâ¯Ãâ¯6.8â¯mm is inserted between the antenna elements in 4â¯Ãâ¯1 array configuration to improve the isolation. Bandgap of the UCEBG is determined using dispersion diagram and suspended stripline method. The proposed antenna is fabricated on 1.6â¯mm thick, low cost FR4 substrate, possessing an overall size of 27.2â¯mmâ¯Ãâ¯46â¯mm. The antenna has been fabricated and experimentally verified. The antenna shows simulated and measured â10â¯dB impedance bandwidths of 14.6â¯GHz (3-17.6â¯GHz) and14.8â¯GHz (3.6-17.9â¯GHz) respectively. UCEBG structure exhibits multiple stop bands and suppresses E-plane coupling over these bands. Isolation better than â18â¯dB is achieved over the complete impedance bandwidth. Radiation efficiency and peak gain of the antenna varies from 78% to 96.7% and 1.4â¯dB to 4â¯dB respectively. MIMO parameters, i.e. error correlation coefficient (ECC) better than0.018 and Total active reflection coefficient (TARC) better than â26â¯dB is achieved over the impedance bandwidth.
Related Topics
Physical Sciences and Engineering
Computer Science
Computer Networks and Communications
Authors
Tanvi Dabas, Deepak Gangwar, Binod Kumar Kanaujia, A.K. Gautam,