A low-profile frequency and polarization reconfigurable circularly polarized water antenna for satellite navigation
A low-profile frequency and polarization reconfigurable circularly polarized water antenna for satellite navigation
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DOI：
10.1109/aps.2016.7696460
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发表时间：
2016-06
期刊：
影响因子：
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通讯作者：
Shiyan Wang;Zhenxin Hu;Wen Wu;Z. Shen
中科院分区：
文献类型：
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作者：
Shiyan Wang;Zhenxin Hu;Wen Wu;Z. Shen
本文提出了一种具有频率和极化可重构性的薄型圆极化（CP）天线，它是一个安装在具有薄气隙的大接地平面上的矩形水贴片，并在宽边蚀刻有槽以实现圆极化。两个顶帽探头用于在其角处向天线馈电，生成 LHCP 和 RHCP。通过改变水贴的高度，可以调谐 3dB 轴比 (AR) 频段，覆盖 0.85 GHz 至 1.45 GHz (52%)，在所有 AR 频段上具有良好的阻抗匹配 (|S11| <; -10 dB)。所提出的天线具有非常低的轮廓（仅为 0.06λ0）和高透明度，应该可用于卫星导航。
A low-profile circularly polarized (CP) antenna with frequency and polarization reconfigurability is presented in this paper, which is a rectangular water patch mounted on a large ground plane with a thin air gap, and etched with a slot on the broad side to achieve circular polarization. Two top-hat probes are used to feed the antenna at its corner, generating both LHCP and RHCP. By varying the height of the water patch, the 3-dB axial ratio (AR) band can be tuned, covering 0.85 GHz to 1.45 GHz (52%), with good impedance match (|S11| <; -10 dB) over all AR bands. The proposed antenna has a very low profile of only 0.06λ0 and high transparency, and should be useful for satellite navigation.