ABSTRACT This paper presents a probe-fed compact multi-band microstrip patch antenna for wideband operation. The proposed antenna is composed of a shorted circular patch fed by folded-patch with a V-shaped slot and two stacked circular patches. Two stacked patches with different diameters are suspended by two shorting pins above the circular patch to achieve a multi-band antenna. The proposed design without stacked patches with a folded-patch feed introduces an ultra-wideband (UWB) antenna with the measured bandwidth of 115.8% in 3.68–13.8 GHz. The proposed stacked design introduces the tuning ability of the frequency bands by changing the diameters of two stacked circular patches. The first and second measured −10 dB bands cover 3.27–4.35 GHz (28.4%) and 5.15–6.40 GHz (21.7%) for worldwide interoperability for microwave access (WiMAX) and wireless local area network (WLAN) operations, respectively. The third measured −10 dB band operates in 9.2–14 GHz with a wide impedance bandwidth (more than 41%). Likewise, good antenna performances such as broadside radiation patterns, acceptable miniaturization and high gain over the operating bands have been observed. Detailed simulations based on the parametric study are performed to identify the triple-band performance of the proposed design.

中文翻译：

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用于具有增强增益的宽带应用的紧凑型多频段堆叠圆形贴片天线

摘要 本文提出了一种用于宽带操作的探头馈电紧凑型多频带微带贴片天线。所提出的天线由一个由带有 V 形槽的折叠贴片馈送的短路圆形贴片和两个堆叠的圆形贴片组成。两个不同直径的堆叠贴片通过圆形贴片上方的两个短路销悬挂，以实现多频段天线。所提出的没有堆叠贴片和折叠贴片馈源的设计引入了一种超宽带 (UWB) 天线，在 3.68-13.8 GHz 的测量带宽为 115.8%。所提出的堆叠设计通过改变两个堆叠圆形贴片的直径来引入频段的调谐能力。第一个和第二个测量的 -10 dB 频段覆盖 3.27–4.35 GHz (28.4%) 和 5.15–6.40 GHz (21. 7%) 分别用于微波接入 (WiMAX) 和无线局域网 (WLAN) 操作的全球互操作性。第三个测量到的 −10 dB 频段在 9.2–14 GHz 范围内运行，具有宽阻抗带宽（超过 41%）。同样，已经观察到良好的天线性能，例如宽边辐射模式、可接受的小型化和工作频段上的高增益。执行基于参数研究的详细模拟，以确定所提议设计的三频性能。