Dual-Band Circularly Polarized Transmitarray With Single Linearly Polarized Feed
Dual-Band Circularly Polarized Transmitarray With Single Linearly Polarized Feed
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DOI：
10.1109/tap.2019.2963594
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发表时间：
2020-01
影响因子：
5.7
通讯作者：
Yuanming Cai;Ke Li;Wenting Li;S. Gao;Yingzeng Yin;Lu-yu Zhao;Wei Hu
中科院分区：
文献类型：
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作者：
Yuanming Cai;Ke Li;Wenting Li;S. Gao;Yingzeng Yin;Lu-yu Zhao;Wei Hu
本文提出了一种新的方法来设计一个双频段的圆极化（CP）发射阵列（TA）天线与线极化（LP）的饲料。利用该方法，研制了一种共用口径双频TA，该TA用一个LP馈电天线在两个频段形成独立的右旋圆极化（RHCP）或左旋圆极化（LHCP）波束。设计了四种不同的CP TA原型，工作在12和14.2 GHz，具有不同的CP感测和不同的波束方向，并制造了两个原型以验证设计概念。一个很好的协议之间获得的辐射模式，增益曲线，极化，和交叉极化水平测量和计算在两个频段。单源双频CP TA具有结构简单、重量轻、易于制造、成本低、性能好等优点，适合于各种应用场合。
This communication proposes a novel method to design a dual-band circularly polarized (CP) transmitarray (TA) antenna with a linearly polarized (LP) feed. By using this method, a shared-aperture dual-band TA is developed, which forms independent beams with right-hand circular polarization (RHCP) or left-hand circular polarization (LHCP) in two frequency bands with a single LP feed antenna. Four different CP TA prototypes operating at 12 and 14.2 GHz with different senses of CP and different beam directions are designed, and two of the prototypes are fabricated to validate the design concepts. A good agreement is obtained between the radiation patterns, gain curves, polarizations, and cross polarization levels measured and computed in both frequency bands. The proposed single-source dual-band CP TA design has advantages of simple structure, lightweight, easy fabrication, low cost, and high performance, making it a good candidate for varied applications.