基于SRR结构的陷波超宽带天线设计

针对超宽带系统易受窄带信号干扰的问题,设计了一种新颖的基于金属开口谐振环(SRR)结构的平面超宽带陷波天线。在天线的辐射贴片上加载U形缝隙,实现了其陷波特性。利用仿真软件研究了U形缝隙的物理尺寸对其陷波特性的影响,并对所设计的超宽带天线进行了制作和测量。结果表明,所制天线在超宽带系统3.1~10.6GHz工作频段的电压驻波比(VSWR)小于2,在WLAN频段具有良好的陷波特性,有效地抑制了超宽带通信系统与窄带通信系统之间潜在的干扰。

Design of a band-notched ultra-wide band antenna based on SRR structure

A novel planar ultra-wide band(UWB) antenna based on metal split ring resonator(SRR) structure with band-notched characteristics was proposed according to that UWB system was easy to be interfered with the narrow-band signals.U-shape slot in the radiating patch was utilized to achieve the band-notched characteristic.The effect of the physical size of the U-shape slot on the antenna band-notch characteristic was studied using simulation software,the designed antenna was fabricated and measured.The results indicate that the voltage standing wave ratio(VSWR) of the prepared antenna is less than 2 in the impedance bandwidth range of 3.1 to 10.6 GHz and possesses the antenna good band-notched characteristic in the bandwidth of WLAN,which suppresses the potential interferences between the ultra-wideband communication systems and the narrowband communication systems effectively.