A dual-band structure-shared antenna with large frequency ratio is proposed in this letter by integrating two substrate integrated waveguide slot antennas (SIWAs) on the branches of dipole. In the proposed structure, dipole is fed by coaxial connector while SIWAs are fed by two microstrip lines. To improve the stability of the dipole and the isolation among three antennas, microstrip high-pass filter is introduced. Measured results show that the proposed antenna works at 27.3−28.8 GHz with directional radiation pattern and 3.02−5.03 GHz with omnidirectional radiation pattern.

中文翻译：

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用于5G通信应用的大频率比双频结构共享天线

本文通过在偶极子分支上集成两个基片集成波导缝隙天线（SIWA），提出了一种大频率比双频结构共用天线。在提议的结构中，偶极子由同轴连接器馈电，而 SIWA 由两条微带线馈电。为了提高偶极子的稳定性和三个天线之间的隔离度，引入了微带高通滤波器。测量结果表明，所提出的天线工作在 27.3-28.8 GHz 的定向辐射模式和 3.02-5.03 GHz 的全向辐射模式。