Reduction of Mutual Coupling in Planar Multiple Antenna by Using 1-D EBG and SRR Structures

One-dimensional electromagnetic bandgap (1-D EBG) and split ring resonator (SRR) structures were inserted between two closely located monopole antennas to suppress mutual coupling. The 1-D EBG and SRR structures in these planar multiple antennas function as a reflector and wave trap, respectively. W...

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Bibliographic Details
Published inIEEE transactions on antennas and propagation Vol. 63; no. 9; pp. 4194 - 4198
Main Authors Lee, Jae-Yeong, Kim, Seung-Han, Jang, Jae-Hyung
Format Journal Article
LanguageEnglish
Published IEEE 01.09.2015
Subjects
Antenna measurements
Antennas
Electromagnetic bandgap (EBG) materials
Isolation technology
Metamaterials
MIMO
Mutual coupling
Periodic structures
Electromagnetic bandgap (EBG) materials
split ring resonator (SRR)
isolation technology
multiple-input multiple-output (MIMO) antennas
mutual coupling
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Summary:One-dimensional electromagnetic bandgap (1-D EBG) and split ring resonator (SRR) structures were inserted between two closely located monopole antennas to suppress mutual coupling. The 1-D EBG and SRR structures in these planar multiple antennas function as a reflector and wave trap, respectively. With the effect of these two structures, the mutual coupling between the two antennas is reduced by more than 42 dB and the back lobes are reduced by 6 dB. Thereby, the radiation efficiency of the antenna is also improved. The two fabricated antennas with 0.19λ 0 spacing exhibit mutual coupling (S 21 , S 12 ) of less than -30 dB from 2.43 to 2.54 GHz. A minimum correlation coefficient of 0.002 and maximum radiation efficiency of 82% are also demonstrated.
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2015.2447052