A four-layer odd function symmetrical dual-polarization coplanar waveguide- (CPW-) fed equilateral right triangle slot printed broadband directional antenna for wireless lab measurement applications is presented. The proposed antenna consists of two stacked perpendicular odd function symmetrical equilateral right triangle slot antenna structures with two stacked reflector ground planes. It is miniaturized, simple, and easy to be fabricated. The measured results demonstrate that the proposed antenna can achieve wide impedance bandwidth that is almost 520% for |S₁₁| and |S₂₂|; VSWR ≦ 3 which has implemented the operating band from 1.37 to 7.12 GHz for Global Positioning System (GPS, 1.575 GHz), Wireless Local Area Networks band (2.4 GHz and 5.8 GHz), 6 GHz unlicensed spectrum (5.925 GHz∼7.125 GHz), Long Term Evolution Upper Band (LTE, 1710–2690 MHz), and sub-6 5 G band (3.5 GHz and 4.7 GHz) applications. The measured in-band isolation performance between the two input ports |S₁₂| ≦ −17 dB is significantly achieved, and meanwhile, the antenna radiation pattern, peak gain, and efficiency of the proposed antenna are measured as well. In the end, the radiation pattern data are compared and analyzed with simulation results.

中文翻译：

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用于无线实验室测量应用的四层奇功能对称双极化对角正三角形缝隙印刷宽带定向天线

提出了一种用于无线实验室测量应用的四层奇函数对称双极化共面波导（CPW-）馈入的等边直角缝隙印刷宽带定向天线。所提出的天线由两个堆叠的垂直奇函数对称等边直角缝隙天线结构和两个堆叠的反射器接地层组成。它是小型化，简单且易于制造的。测量结果表明，所建议的天线可以实现宽阻抗带宽，对于| S ₁₁ | | | | | | | 和| S ₂₂|; VSWR≦3，它已为全球定位系统（GPS，1.575 GHz）实现了1.37至7.12 GHz的工作频段，无线局域网频段（2.4 GHz和5.8 GHz），6 GHz的未许可频谱（5.925 GHz〜7.125 GHz），长期演进高频带（LTE，1710–2690 MHz）和sub-6 5 G频带（3.5 GHz和4.7 GHz）应用。在两个输入端口之间测得的带内隔离性能| S ₁₂ | 显着达到≤-17 dB，同时，还测量了所提出天线的天线辐射方向图，峰值增益和效率。最后，将辐射方向图数据与仿真结果进行比较和分析。