A new wideband microstrip antenna, based on the falcate‐shaped patch, with reconfigurable capability at circular‐polarization is presented in this article. To achieve both properties of stable radiation characteristics and impedance matching across a broad bandwidth, the combination of the L‐probe feeding and falcate‐shaped patch is used. An RF‐switch is utilized to excite the L‐probes and generate either left‐hand circular polarization or right‐hand circular polarization over the wide operating bandwidth. A prototype of the proposed antenna is fabricated. An excellent agreement exists between the simulation and measurement results. The results reveal a wide impedance matching (|S₁₁| < − 10 dB), bandwidth of 55% (1.42‐2.5 GHz), and a 3 dB axial ratio bandwidth of 44% (1.6‐2.5 GHz). Furthermore, results confirm good radiation and impedance matching performance of the fabricated antenna over the wide bandwidth in comparison with previous related investigations. The reported reconfigurable antenna can be used as a suitable choice for GPS, ISM band, or RFID applications

中文翻译：

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新型的可在圆极化时重新配置功能的宽带微带falcate贴片天线

本文提出了一种新的宽带微带天线，该天线基于al形补丁，在圆极化时具有可重新配置的功能。为了在宽带宽上实现稳定的辐射特性和阻抗匹配，可以使用L探头馈电和and形贴片的组合。射频开关用于激励L探针并在较宽的工作带宽上产生左旋圆极化或右旋圆极化。制造了所提出的天线的原型。模拟结果和测量结果之间存在极好的一致性。结果显示了宽阻抗匹配（| S ₁₁ | <− 10 dB），55％的带宽（1.42-2.5 GHz）和3 dB的轴向比率带宽44％（1.6-2.5 GHz）。此外，与先前的相关研究相比，结果证实了所制造天线在宽带宽上具有良好的辐射和阻抗匹配性能。报告的可重配置天线可以用作GPS，ISM频段或RFID应用的合适选择