轮胎气压监测系统2.4 GHZ天线的实验分析

K. O. Enalume, J. Emagbetere, F. Edeko
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引用次数: 0

摘要

用于轮胎压力监测系统的天线通常被轮胎包围。就其本身而言,天线可能具有优异的性能。但是,车轮和轮胎可能会对天线的性能产生影响。本文研究了用于轮胎压力监测系统的简单2.4 GHz鞭状天线的性能。采用HFSS对天线进行建模,采用SolidWorks对车轮和轮胎进行建模。车轮和轮胎会对天线性能产生影响。通过HFSS模拟,确定了反射系数、驻波比、增益和辐射方向图。在车轮的不同位置和配置下,检查天线的运行情况,以确定其有效信号辐射的最佳位置。四种不同的配置是:天线接地到轮辋中间,天线不接地到车轮边缘,天线接地到车轮边缘,天线接地到轮胎包围的车轮边缘。结果表明,通过边缘将天线与车轮电接地可以提高天线的性能。此外,轮胎不会对天线的远场增益产生负面影响。
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EXPERIMENTAL ANALYSIS OF A 2.4 GHZ ANTENNA FOR TYRE PRESSURE MONITORING SYSTEM
Antennas used for tyre pressure monitoring systems are usually enclosed by the tyre. On its own, the antenna may have excellent properties. However, the wheel and tyre may have an impact on the performance of the antenna. This paper investigated the performance of a simple 2.4 GHz whip antenna for a tyre pressure monitoring system. The antenna was modelled using HFSS, while the wheel and tyre were modelled using SolidWorks. The wheel and tyre can have an impact on the antenna performance. The reflection coefficients, VSWR, gain and radiation pattern were determined through simulations, using HFSS. The antenna operation was checked at different positions and configurations to the wheel to determine its’ optimum position for effective signal radiation. The four different configurations were: antenna grounded to the middle of the rim, antenna ungrounded to the wheel’s edge, antenna grounded to the wheel’s edge, and antenna grounded to the wheel’s edge enclosed by the tyre. The result shows that electrically grounding the antenna to the wheel by the edge improves its performance. Also, the tyre did not negatively impact the far-field gain of the antenna.
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审稿时长
6 weeks
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