Design and Analysis of a Coupling-Fed Printed Dipole Array Antenna With High Gain and Omnidirectivity
Design and Analysis of a Coupling-Fed Printed Dipole Array Antenna With High Gain and Omnidirectivity
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DOI：
10.1109/access.2017.2768518
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发表时间：
2017-11
期刊：
影响因子：
3.9
通讯作者：
H. Zong;X. Liu;Xinru Ma;Shu Lin;Lu Liu;Shou-lan Liu;Shaowei Fan
中科院分区：
文献类型：
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作者：
H. Zong;X. Liu;Xinru Ma;Shu Lin;Lu Liu;Shou-lan Liu;Shaowei Fan
提出并分析了一种由共面波导馈电的带辐射负载的印刷全向偶极子阵列天线。飞线和通孔用于连接偶极子以实现平衡馈电。CST microwave studio®的模拟结果表明，工作频带为4.6至4.9 GHz，反射系数小于−10 dB。该频段的全向增益高于4.23 dB，天线尺寸仅为103.4 mm × 12.6 mm × 1.5 mm。结果表明，在4.7GHz时，其单波长增益可达3.1dB/ $\lambda $，有利于天线的小型化和批量生产。为了有效地减小同轴馈线外导体上的外表面电流，引入了印刷扼流圈，使天线性能不受更长同轴线的影响。带宽和增益分别提高到4.63-5.45GHz和5.8dB。所设计的天线既可以独立使用，也可以集成在印刷电路板上，具有广泛的应用前景。
A printed omnidirectional dipole array antenna with a radiated load is proposed and analyzed, which is fed by a coplanar waveguide. Flying lines and via-holes are used to connect dipoles to achieve a balanced feed. Simulated results by CST microwave studio® indicate that the operating band is 4.6 to 4.9 GHz with its reflection coefficient less than −10 dB. The omnidirectional gain in this band is higher than 4.23 dB and the antenna size is only $103.4 \text {mm}\times 12.6 \text {mm}\times 1.5 \text {mm}$ . As a result, its gain per wavelength can reach a high value of 3.1 dB/ $\lambda $ at 4.7 GHz, which is conducive to antenna miniaturization and batch production. In order to effectively decrease the outer surface current on the coaxial feeder outer conductor, a printed choke is introduced, so that the antenna performance would not be affected by an even longer coaxial line. The bandwidth and gain are improved achieving 4.63–5.45GHz and 5.8dB, respectively. There is a broad application of the designed antenna for it not only can be used independently, but also can be integrated on the printed circuit board.