Design of High-Isolation Wideband Dual-Polarized Compact MIMO Antennas With Multiobjective Optimization
Design of High-Isolation Wideband Dual-Polarized Compact MIMO Antennas With Multiobjective Optimization
复制标题
多目标优化高隔离度宽带双极化紧凑型MIMO天线设计
DOI：
10.1109/tap.2017.2784446
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发表时间：
2018-03-01
影响因子：
5.7
通讯作者：
Wang, Gang
中科院分区：
文献类型：
--
作者：
Lu, Diqun;Wang, Lu;Wang, Gang
Multiobjective optimization design of compact multiple-input and multiple-output (MIMO) antennas with canonical structures (viz., transformation or combination by regular shapes) for wideband radiation and fragment structures (viz., combination by discrete fragment patches) for high isolation is proposed and demonstrated. In the design, multiobjective evolutionary algorithm based on decomposition combined with differential evolution (MOEA/D-DE) for optimization of canonical structures and MOEA/D combined with genetic operator (MOEA/D-GO) for optimization of fragment structures are combined and iterated. The design is demonstrated with compact bow-tie MIMO antennas sharing a small common ground plane. The four orthogonally deployed bow-tie antennas are optimized by using MOEA/D-DE to acquire dual polarization and wideband radiation. Fragment-type structures on the common ground plane are optimized by using MOEA/D-GO to acquire very high isolation. Both simulation and measurement show that the optimized MIMO bow-tie antennas provide isolation higher than 30 dB in a relative bandwidth of 40% (from 2.6 to 3.9 GHz). With the proposed design technique, dual-band high-isolation MIMO antennas may also be designed.
