A circularly polarized printed antenna using an asymmetric open‐slot is designed in this paper. The presented antenna consists of conducting ground plane with open wide‐slot, fed electromagnetically by a microstrip feedline. The slot and feedline are positioned at the edge of the ground plane and substrate, hence making the antenna asymmetric. The measured results show that the |S₁₁| < −10 dB impedance bandwidth is 125% (3.2‐14 GHz) and the broadband axial ratio bandwidth is 61% (3.2‐6 GHz). The antenna is very simple and has a small size of 25 mm × 25 mm, making it attractive for compact wireless WLAN, ISM, WiMAX, and C‐band applications.

中文翻译：

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非对称圆极化开槽天线

本文设计了一种采用非对称开槽的圆极化印刷天线。所介绍的天线包括一个带有敞开宽缝的导电接地平面，由微带馈线以电磁方式馈电。缝隙和馈线位于接地层和基板的边缘，因此使天线不对称。测量结果表明| S ₁₁ |。<-10 dB的阻抗带宽为125％（3.2-14 GHz），宽带轴向比率带宽为61％（3.2-6 GHz）。该天线非常简单，尺寸仅为25 mm×25 mm，非常适合紧凑型无线WLAN，ISM，WiMAX和C频段应用。