短波宽带全向天线应用研究

摘要

应用数值分析法对短波授时系统——线栅型扇锥结构宽带全向天线进行了分析和仿真.对不同导线根数、天线馈电间距和扇面角对宽带全向天线的驻波比和增益的影响进行了讨论.应用研究结果指导调整了短波授时系统宽带全向天线,使其在5～15 MHz频率上电压驻波比小于1.5,达到了满意授时效果的要求.%In this paper, a broadband omnidirectional antenna with wire sector-conical structure in the shortwave timing sys-tem is analyzed and simulated based on numerical analysis. The voltage standing wave ratio (VSWR) and power gain of broad-band omnidirectional antenna with different wire number, different size of feed-point gap and different sector-conical angle are discussed. The broadband omnidirectional antenna in the shortwave timing system is adjusted according to the research results and thus VSWR is less than 1.5 in 5～15 MHz frequency, which achieves satisfactory timing results.