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采用扩展矩量法对两种不同形状旋转对称单极天线进行了分析研究 ,得出了最佳锥角和天线下限频率随天线高度变化的曲线 ,设计制作了一下限频率为 10 0 0 MHz的天线来验证此曲线 ,另外制作了一中心频率为75 0 MHz用于冲激雷达的旋转对称单极天线 ,均采用扩展矩量法进行了分析 ,与部分测试结果相比较 ,两者吻合较好 ,为工程设计提供了理论依据。
Two kinds of rotationally symmetric monopole antennas with different shapes were analyzed by using the extended moment method. The optimal cone angle and the lower limit of the antenna frequency with the antenna height were obtained. A new design of a monopole antenna with a minimum frequency of 10 000 MHz Antenna was used to verify this curve. In addition, a rotational symmetric monopole antenna with a center frequency of 75 0 MHz for impulse radar was fabricated. All of them were analyzed by the extended moment method. Compared with some test results, the two agree well , Provided a theoretical basis for engineering design.