Microstrip Magnetic Monopole Endfire Array Antenna With Vertical Polarization

Microstrip Magnetic Monopole Endfire Array Antenna With Vertical Polarization
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垂直极化微带磁单极端射阵列天线

DOI:
10.1109/tap.2016.2597643
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发表时间:
2016-08
影响因子:
5.7
通讯作者:
Yunliang Long
Yunliang Long
中科院分区:
计算机科学2区
文献类型:
--
作者:
Zhixi Liang;Yuanxin Li;Juhua Liu;Shao Yong Zheng;Yunliang Long

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本文提出了一种新型垂直极化微带端射阵列天线。这种新颖的阵列元件由位于基板两侧的两个对称的矩形贴片组成,其中两个边缘短路,其他边缘开放。我们使用腔体模型来分析阵列单元的机制,我们发现它可以用作“磁单极天线”。开放侧的磁流具有四分之一周期正弦变化,产生倾斜的单极子状辐射图案。通过磁单极天线的长宽比可以很容易地确定倾斜角度。这里提出了两元件端射阵列和四元件端射阵列,以实现具有非常低轮廓(3毫米)的端射垂直偏振。两元件端射阵列的带宽为 2.42 至 2.48 GHz,峰值端射增益为 5.3 dBi。通过四个阵列元件,峰值端射增益可在 2.40 至 2.48 GHz 带宽内增强至 7.7 dBi。
A new microstrip endfire array antenna with vertical polarization is proposed in this paper. The novel array element consists of two symmetrical rectangular patches on both sides of a substrate with two edges shorted and other edges opened. We use a cavity model to analyze the mechanism of the array element, which we find can work as a “magnetic monopole antenna.” The magnetic current on the open sides, which features quarter cycle sinusoidal variation, generates a tilted monopole-like radiation pattern. The tilted angle can be easily determined by the length-to-width ratios of the magnetic monopole antenna. A two-element endfire array and a four-element endfire array are proposed here to achieve endfire vertical polarization with a very low profile (3 mm). The two-element endfire array has a bandwidth from 2.42 to 2.48 GHz and a peak endfire gain of 5.3 dBi. With four array elements, the peak endfire gain can be enhanced to 7.7 dBi in a bandwidth from 2.40 to 2.48 GHz.
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