Broadband Wide Beam Dual Polarization Antenna Unit and Its Sparse Array

2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE) Pub Date : 2018-12-01 DOI:10.1109/ISAPE.2018.8634324

Xiong-jie Jin, Shuoguang Wang, You-wei Liu

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引用次数: 1

Abstract

This paper presents a new type of wide-bandwidth beam antenna, which uses a relatively new type of cross-type microstrip dipole. This form has a wider −3dB beamwidth than ordinary microstrip antennas. The radiation profile uses a gradation profile and widens the bandwidth of the antenna by adding parasitic structures and increasing the air frame height. Antenna structure parameters are optimized using ANSYS HFSS. What the test results display is that the 1 port and 2 port standing wave's relative bandwidth <−7.5dB of designed antenna unit reach 35.9% and 22.8%, the central frequency E-plane and H-plane beam width are 110 ° and 91 °, respectively, which facilitates large-angle scanning. This antenna is an orthogonal two-line polarized antenna with a zenith-directional line polarization cross-polarization level of −19.55 dB. With the help of software Matlab, we use sparse Focuss algorithm obtain the antenna array composed of 64 units. The gain reaches 19.61dB when the scanning angle is 60°. It was verified that this antenna element and sparse array have good characteristics.

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宽带宽波束双极化天线单元及其稀疏阵列

本文提出了一种新型的宽带波束天线，它采用了一种新型的交叉微带偶极子。这种形式的波束宽度比普通微带天线宽- 3dB。辐射剖面采用渐变剖面，并通过增加寄生结构和增加空气框架高度来拓宽天线的带宽。利用ANSYS HFSS对天线结构参数进行了优化。测试结果显示，设计天线单元的1口和2口驻波相对带宽< - 7.5dB分别达到35.9%和22.8%，中心频率e面和h面波束宽度分别为110°和91°，有利于大角度扫描。该天线为正交双线极化天线，天顶方向线极化交叉极化电平为−19.55 dB。在Matlab软件的帮助下，我们使用稀疏聚焦算法得到了由64个单元组成的天线阵列。当扫描角度为60°时，增益达到19.61dB。实验结果表明，该天线单元和稀疏阵列具有良好的特性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

2018 12th International Symposium on Antennas, Propagation and EM Theory (ISAPE)

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