Design of Circularly Polarized Low-profile and Slender Antenna with a Helical Element
Design of Circularly Polarized Low-profile and Slender Antenna with a Helical Element
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螺旋元件圆偏振薄型细长天线设计
DOI：
10.1109/lawp.2012.2198430
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发表时间：
2012
影响因子：
4.2
通讯作者：
Y. Zhang and T. Fukusako
中科院分区：
文献类型：
--
作者：
M. Ishii;T. Fukusako and A.Alphones;Y. Zhang and T. Fukusako
圆极化，细长，螺旋天线的设计。一个电容性的饲料结构，这是以前提出的，具有细长的螺旋结构被用作背导体。背导体安装在螺旋元件的后面，以便在k0 a =0.35（k0：谐振频率下的波数，a：围绕天线的假设球体的半径）的情况下以大约1GHz的低轮廓结构辐射圆极化（CP）。S11、轴比（AR）和辐射方向图的模拟结果与测量结果之间具有合理的一致性。此外，背导体的影响进行了讨论的螺旋天线结构与一个大的接地平面。
Designs of circularly polarized, slender, helical antennas are presented. A capacitive feed structure, which has been proposed previously, with a slender helical structure is used as a back-conductor. The back-conductor is installed close behind the helical element in order to radiate circular polarization (CP) with a low-profile structure at approximately 1 GHz with k0a=0.35 ( k0: wavenumber at the resonance frequency, a: radius of a hypothetical sphere circumventing the antenna). Reasonable agreement between the simulated and measured results for S11, the axial ratio (AR), and the radiation pattern have been obtained. Furthermore, the effect of the back-conductor is discussed for the helical antenna structure with a large ground plane.