三角形栅格矩形径向线螺旋阵列天线的设计与实验研究
Design and experimental research on triangle-grid radial-line helical rectangular array antenna
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摘要: 介绍了三角形栅格矩形径向线螺旋阵列天线的工作原理，设计并数值模拟了中心频率为4.0 GHz的三角形栅格矩形径向线螺旋阵列天线，并对此阵列天线进行了实验研究。实验结果表明：阵列天线在中心频率4.0 GHz 下，增益为15.3 dB，轴向轴比值1.58，驻波比为1.3，口径效率为86%；在3.8～4.2 GHz的频率范围内可实现圆极化定向辐射，增益大于14.9 dB，轴比值小于1.7，驻波比小于1.6。Abstract: A triangle-grid radial-line helical rectangular array antenna was proposed. Based on the backgrounds and the principle of the array antenna, the 8-element triangle-grid radial-line helical rectangular array antenna was studied by the numerical simulation at the central frequency of 4.0 GHz and experiments. Experimental results indicate that: at the central frequency of 4.0 GHz, the power gain is 15.3 dB, the axial ratio is 1.58 at the normal direction, the voltage standing wave ratio(VSWR) is 1.3 and the aperture efficiency is 86%. In the range of 3.8 GHz to 4.2 GHz, the power gain is above 14.9 dB, the axial ratio is below 1.7 and the VSWR is below 1.6．
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Key words:
- high power microwave /
- rectangular array antenna /
- helical antenna /
- radial line /
- triangle grid
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