This paper investigates a feasible configuration of slotted bowtie antenna based on MTM and SIW properties for 5G millimeter-wave applications. To realize the proposed slotted bowtie antenna in a compact dimension with high performances, the MTM and SIW concepts are implemented by applying the trapezoidal slots on the top surface of the antenna and metallic via holes through the substrate layer connecting the top surface to the ground plane. The antenna has been fed with a simple microstip-line which is connected to a waveguide-port. It is shown that the slotted bowtie antenna with a small dimension of 30160.8 mm³ operates over a measured wideband of 32–34.6 GHz with the fractional bandwidth, average gain, and radiation efficiency of 7.8%, 3.2 dBi, and 50%, respectively. To improve the antenna's performance, the artificial magnetic conductor (AMC) properties have been employed on the ground plane by loading vertical and linear slots with various lengths. The AMC slots are aligned under the trapezoidal slots on the top surface to transfer the maximum electromagnetic signals to them for optimum radiation. The proposed method enlarges the antenna’s effective aperture area, keeping constant its physical dimensions. The proposed AMC-loaded antenna covers wider frequency range of 30–37 GHz in measurement, which corresponds to 21% fractional bandwidth. The average experimental gain and radiation efficiency have been increased to 5.5 dBi and 66.5%, respectively, which illustrate the effectiveness of the proposed AMC-loaded antenna. The results confirm that the proposed slotted bowtie antenna with advantages of compact dimension, wide bandwidth, high gain and efficiency, low profile, being cost-effective, simple design, and easy fabrication process, which makes it applicable for mass production, can be a good candidate for 5G millimeter-wave applications.

中文翻译：

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搭载AMC的MTM和SIW风格的领结天线，适用于5G毫米波应用

本文基于MTM和SIW特性研究了5G毫米波应用中缝隙领结天线的可行配置。为了以紧凑的尺寸实现高性能的拟议开槽领结天线，MTM和SIW概念是通过在天线顶面上应用梯形缝隙以及穿过将顶面连接到接地层的基板层的金属通孔来实现的。天线已馈入一条简单的微细线，该细线连接到波导端口。结果表明，小尺寸的开槽领结天线30160.8毫米³在32–34.6 GHz的测量宽带上运行，其分数带宽，平均增益和辐射效率分别为7.8％，3.2 dBi和50％。为了提高天线的性能，通过在地面上加载各种长度的垂直和线性缝隙，在地平面上采用了人造磁导体（AMC）特性。AMC插槽在上表面的梯形插槽下方对齐，以将最大的电磁信号传输到它们，以实现最佳辐射。所提出的方法扩大了天线的有效孔径面积，并保持其物理尺寸不变。拟议中的装有AMC的天线在测量中覆盖了30-37 GHz的较宽频率范围，相当于21％的分数带宽。平均实验增益和辐射效率已提高到5.5 dBi和66.5％，分别说明了所建议的AMC负载天线的有效性。结果表明，所提出的缝隙蝶形天线尺寸小，带宽大，增益高，效率高，外形小巧，具有成本效益，设计简单，制造工艺容易等优点，可用于批量生产。 5G毫米波应用的理想选择。