An array antenna of two high-coupled patches with an edge-to-edge distance of only $0.02{\lambda }_0$ at 3.45 GHz merged with a Jerusalem-like parasitic structure (JPS) is reported. This JPS is compactly sandwiched between two patches and consists of two strips, horizontal (HS) and vertical (VS). HS perturbs the current distributions and so presents two mechanisms for improving the impedance matching and exciting the new half-mode of quasi TM_1/2,1 in comparison with TM₀₁. Additionally, a broadside pattern is provided with a 10 dB increment in polarization purity and a gain over 5.5 dB. VS with two symmetric vias decreases the mutual coupling extremely and isolation over 49 dB is obtained. Moreover, the theory of the excitation modes, the performance and the parametric studies are presented. Two array antennas are fabricated with and without JPS and their results are compared which prove a 15% increase in total MIMO efficiency and a significant reduction in ECC.

两个高耦合贴片的阵列天线，边缘到边缘的距离仅为 $0.02{\lambda }_0$据报道，在 3.45 GHz 处与类似耶路撒冷的寄生结构 (JPS) 合并。该 JPS 紧密地夹在两个贴片之间，由水平 ( HS ) 和垂直 ( VS )两个条带组成。HS扰乱电流分布，因此与 TM ₀₁相比，提出了两种机制来改善阻抗匹配并激发准 TM _1/2,1的新半模。此外，宽边方向图的极化纯度增加了 10 dB，增益超过 5.5 dB。VS两个对称通孔极大地降低了相互耦合，并获得了超过 49 dB 的隔离度。此外，还介绍了激励模式的理论、性能和参数研究。使用和不使用 JPS 制造了两个阵列天线，并比较了它们的结果，证明总 MIMO 效率提高了 15%，ECC 显着降低。