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为了有效地抑制窄带信号对超宽带系统的干扰,设计了一种新型双陷波平面超宽带天线,地板采用新型的缺陷地结构来扩展带宽,并通过在八边形天线的辐射贴片上加载互补开口谐振环、在馈线上开U形缝隙,使得天线在3.7～4.1GHz和5.1～5.9 GHz频段内实现双陷波特性。分析了实现天线陷波的原理,研究了天线的尺寸参数对陷波的影响,并对所设计的天线进行了实物加工和测试。结果显示,该天线能够有效地抑制卫星C波段和无线局域网系统的干扰,远场方向图和增益特性良好,在整个超宽带系统工作带宽内具有较好性能,是一种能广泛应用于超宽带系统的新型超宽带天线。
In order to effectively suppress the interference of narrow-band signals to ultra-wideband systems, a novel double-notch planar ultra-wideband antenna is designed. The floor adopts a new type of defect structure to extend the bandwidth and is loaded on the radiating patch of the octagonal antenna The complementary open-ended resonant ring, with a U-shaped slot in the feed line, allows the antenna to achieve double-notched characteristics in the 3.7-4.1 GHz and 5.1-5.9 GHz bands. The principle of realizing the antenna notch is analyzed, the influence of the size parameter of the antenna on the notch is studied, and the designed antenna is processed and tested in-kind. The results show that the antenna can effectively suppress the interference of satellite C-band and WLAN system, and the far-field pattern and gain characteristics are good, and the antenna has good performance in the entire UWB system working bandwidth. Therefore, the antenna can be widely used in ultra-wideband System of new ultra-wideband antenna.