小型化高效率的短波宽带天线
doi: 10.3724/SP.J.1146.2007.00044
Small Size and High Efficiency HF Broadband Antenna
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摘要: 该文介绍了一种小型高效的短波宽带天线,天线采用线栅型扇锥结构,运用矩量法对不同导线数量、馈电端间距、扇锥张角下天线电压驻波比和最大增益进行仿真计算,并根据仿真结果制作出实际天线,测试结果与仿真结果较好地吻合。天线在3～30MHz频段95%以上频率点驻波比小于2,平均辐射效率达到98%,平均增益超过6dBi。
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关键词:
- 线栅型扇锥天线; 矩量法; 宽带; 短波
Abstract: A small size and high efficiency HF broadband antenna that use wire sector-conical structure is designed. The Method of Moment is used to compute the VSWR and power gain of the antenna with different wire number, different size of feed-point gap and different sector-conical open angle. A sample antenna is built base on simulation results. The measured VSWR and radiation pattern agree well with those from simulation. The VSWR is within 2:1 over more than 95% of HF band, the average efficiency is 98% and the average gain is greater than 6dBi. -
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