A broadband circularly polarized conformal microstrip antenna based on coplanar waveguide feeding is presented. By embedding a pair of disturbing branches on a rectangular grounded metal ring and protruding into the ring a pentagonal monopole, the measured bandwidths of 3‐dB axial ratio and 10‐dB impedance achieve 58.5% (4.6 to 8.4 GHz) and 67.7% (4.3 to 8.7GHz), respectively. The antenna has a small form factor, a low profile and low manufacturing costs. Simulated and measured results indicate that this antenna has excellent adaptability to cylindrical carriers with different radius, which is adapted for potential conformal applications. In addition, the proposed antenna can find applications in WLAN (5, 5.2, and 5.8 GHz), WiMAX (5.5GHz), and other C‐band (4GHz‐8GHz) wireless communications.

中文翻译：

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用于共形应用的共面波导馈电宽带圆极化微带天线

提出了一种基于共面波导馈电的宽带圆极化共形微带天线。通过将一对干扰分支嵌入矩形接地的金属环中并向该环中突出一个五边形单极子，测得的3dB轴向比率和10dB阻抗的带宽分别达到58.5％（4.6至8.4 GHz）和67.7％（4.3）至8.7GHz）。该天线尺寸小，外形小，制造成本低。仿真和测量结果表明，该天线对具有不同半径的圆柱状载体具有出色的适应性，适用于潜在的保形应用。此外，拟议中的天线还可用于WLAN（5、5.2和5.8 GHz），WiMAX（5.5GHz）和其他C波段（4GHz-8GHz）无线通信中。