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Helmet Antenna Design Using Characteristic Mode Analysis

机译:使用特征模式分析的头盔天线设计

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摘要

The helmet antenna is required to achieve hands-free operation for disaster prevention. The helmet antenna is not only low profile with a small configuration, but it also suppresses radiation toward the human head. This paper presents the characteristic mode analysis of the helmet, which is a hemispherical conductor shell to achieve the omnidirectional pattern in the horizontal plane. By deleting the weak part of the electric current on the hemispherical conductor shell, the shape of the folded dipole was obtained with a low resonant frequency. The folded dipole antenna with a slit-loaded copper ring structure with high radiation efficiency and a low SAR value was designed.
机译:需要头盔天线来实现免提操作以防灾。头盔天线不仅外形小巧,外形小巧,而且还能抑制朝向人头的辐射。本文介绍了头盔的特征模式分析,该头盔是一种在水平面上实现全方向图案的半球形导体壳。通过消除半球形导体壳上的电流的弱部分,以低谐振频率获得了折叠偶极子的形状。设计了具有缝隙加载的铜环结构,辐射效率高,SAR值低的折叠偶极天线。

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