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中文摘要：
在Yang X等人提出的SRR（Split Ring Resonator）天线结构基础上,在天线贴片上设计出一个U型槽,通过改变该U型槽缝隙宽度、长度等参数,以不断调整阻带中心频率及带宽,从而实现了一种具有陷波特性、能够屏蔽无线局域网（WLAN）信号干扰的超宽带天线。仿真及测试结果表明,改进前天线的工作频带为3～11 GHz（VSWR〈2）,无陷波特性;而改进后的天线在4.4～5.7 GHz频率范围内具有良好的频带抑制特性,增益值最低可达到-15 dB,并且在其它工作频段具有良好的辐射性能。
英文摘要：
Based on the SRR（Split Ring Resonator） - shaped UWB（Ultra-wideband） antenna designed by Yang X, et al, a UWB antenna is implemented which shows band-notched characteristic through a U-shaped slot in order to reduce the interference of WLAN（Wireless Local Area Network） signals. The frequency and bandwidth of the stopbands can be adjusted by changing the width and length of the slot. The simulation and measurement results indicate that the passband of the previous antenna is 3 - 11 GHz（ VSWR 〈 2）without band-notched characteristic, while the improved one has a stopband in 4.4 - 5.7 GHz in which the gain is below to - 15 dB, and it has good radiational characteristics in the rest operating frequency bands.
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