Circularly Polarized Beam-Switching Antenna Array Design for Directional Networks
Circularly Polarized Beam-Switching Antenna Array Design for Directional Networks
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DOI：
10.1109/lawp.2018.2805776
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发表时间：
2018-04-01
影响因子：
4.2
通讯作者：
Zhang, Zhijun
中科院分区：
文献类型：
--
作者：
Huang, Gui Chao;Iskander, Magdy F.;Zhang, Zhijun
对于现代定向通信网络，存在对将高增益和宽带性能与低成本和轻量特性结合在一起的先进天线阵列设计的显著且不断增长的需求。分析了一种新型4 × 8右旋圆极化长缝隙天线阵在8 × 8 Butler阵馈电时的波束切换特性。从带宽、束宽、增益、交叉极化（x-pol）和轴比等方面分析了其辐射特性。当主波束方向在+/-30度角内时，获得稳定的辐射图案。波束切换LSA阵列的测量增益为13.5 dBic，波束宽度为15度，x-pol大于10 dB，轴比小于6 dB。还包括与4 × 8堆叠贴片天线阵列的比较结果以供参考。
For modern directional communication networks, there is a significant and growing need for advanced antenna array designs that combine the high gain and broadband performance together with the low-cost and lightweight characteristics. In this letter, the beam-switching characteristics of a new 4x8 right-hand circularly polarized long slot antenna (LSA) array were analyzed when fed by an 8 x 8 Butler matrix. The radiation characteristics were analyzed in terms of bandwidth, beamwidth, gain, cross polarization (x-pol), and axial ratio. Stable radiation patterns were obtained when the main beam directions were within the +/- 30 degrees angle. The beam-switching LSA array has measured gain of 13.5 dBic and beamwidth of 15 degrees with x-pol greater than 10 dB and axial ratio less than 6 dB. Comparative results with a 4 x 8 stacked patch antenna array are also included for reference.