电波科学学报2018，Vol.33Issue(2)：132-137,6.DOI:10.13443/j.cjors.2017120801
一种基于吸波材料的屏蔽领结天线的研究与应用
A shielded bow tie antenna based on absorbing material
摘要
Abstract
An ultra wideband pulse transmitting antenna based on bow tie antenna was designed.The metal cavity was used to improve the directivity of the antenna and played a shielding role.The absorbing material in the cavity reduce the reflection of electromagnetic wave in metal cavity,and improve the antenna frequency domain characteristics and time domain signal.The finite element electromagnetic simulation software HFSS was used to design the antenna model and optimizate the parameters of antenna.Compared with the absorbing materials and metal cavities,the parameters of the actual antenna are effectively improved.The center frequency of the antenna is lower,and the bandwidth below-10 dB increases from 100 MHz to 200 MHz.The width of the pulse signal is reduced,the signal tailing is eliminated.The actual disturbance above ground was shielded effectively.The detection accuracy is also improved,and the direct wave and reflecting waves are effectively separated.Compared with the atenna without shielding cavity,the detection results are greatly improved.关键词
探地雷达/领结天线/回波损耗/电磁波/吸波材料Key words
ground penetrating radar/bow tie antenna/return loss/electromagnetic wave/absorbing material分类
信息技术与安全科学引用本文复制引用
吴彦奇,刘四新..一种基于吸波材料的屏蔽领结天线的研究与应用[J].电波科学学报,2018,33(2):132-137,6.基金项目
深部矿产资源地球物理综合探测与信息提取(2016YFC0600505) （2016YFC0600505）
国家自然科学基金(41574109、41504085) （41574109、41504085）
