Two decoupled antennas, comprising two feeding monopoles and one dipole shared by the monopoles, for the fifth‐generation (5G) multi‐input multi‐output (MIMO) applications are proposed. The feeding monopoles are placed on both sides of the coupled‐fed, common dipole. First, to operate in the 3.3–5.0 GHz 5G wideband, two resonant modes at about 3.6 and 4.7 GHz, contributed to by the common dipole and the feeding monopoles respectively, are utilized. Then, by introducing distributed capacitance loaded on the dipole center, the one‐wavelength dipole resonant mode can be lowered to oppose the counter‐phased half‐wavelength mode currents on the half dipole, resulting in self decoupling around 3.6 GHz. The mutual coupling for the common dipole is reduced by about 19 dB in this study. The design shows a small size of 35 mm × 5 mm (0.38‐wavelength × 0.05‐wavelength at 3.3 GHz) and can be a promising candidate for narrow‐bezel 5G laptop computers.

中文翻译：

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具有通用偶极子的多输入多输出天线解耦，适用于宽带5G便携式计算机

针对第五代（5G）多输入多输出（MIMO）应用，提出了两个解耦天线，包括两个馈电单极子和一个单极子共享的一个偶极子。馈电单极子放置在耦合馈电的公共偶极子的两侧。首先，要在3.3–5.0 GHz的5G宽带中工作，需要利用分别由公共偶极子和馈电单极子贡献的大约3.6和4.7 GHz的两个谐振模式。然后，通过引入负载在偶极子中心的分布电容，可以降低单波长偶极子谐振模式，以对抗半偶极子上反相的半波长模式电流，从而在3.6 GHz附近实现自解耦。在这项研究中，公共偶极子的互耦降低了约19 dB。该设计显示了35 mm×5 mm的小尺寸（0.38波长×0。