【摘 要】
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The dual-port compact multiple-input multiple-output(MIMO)dipole antennas with close spacing d of 0.5 λ and 0.3 λ are designed,and some electromagnetic band g
【机 构】
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School of Information and Communication Engineering
【基金项目】
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This work was supported by the National Natural Science Foundations of China(Grant No.61771435).
论文部分内容阅读
The dual-port compact multiple-input multiple-output(MIMO)dipole antennas with close spacing d of 0.5 λ and 0.3 λ are designed,and some electromagnetic band gap(EBG)structures are in-serted between them to reduce mutual coupling.Those MIMO antennas with d = 0.5 λ and 0.3 λ,and with dif-ferent mutual couplings are fabricated and measured,the channel capacity and correlation coefficient(CC)are analyzed and compared in a rich multipath rever-beration chamber(RC),an office and a conference room.Results show that if d is reduced from 0.5 λ to 0.3 λ,in the RCs,channel capacities of all the anten-nas are very close to that of the i.i.d.Rayleigh channel,although the average CCs are increased from 0.168 in the nonlossy RC to 0.269 in the lossy RC.In the of-fice and conference rooms,compared with the RC,the average capacities of those antennas get a slight re-duction,however,in most cases,the capacity of d =0.5 λ is larger than that of d = 0.3 λ,and the anten-nas with EBG have a larger capacity compared with the antennas without EBG,with a corresponding re-duction of CC.A non-line-of-sight(NLOS)scenario of through-the-wall is also investigated.
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