电磁带隙的超宽带阻带天线设计

Design of ultra-wideband stop-band antenna based on EBG

设计了一种电磁带隙（EBG）结构。根据实际应用要求,在一种超宽带微带天线上加载电磁带隙单元,设计出一种阻带天线。对天线的多个参数进行讨论并优化设计,根据仿真实验制作出天线实物。实验结果说明：天线在3.11～5.97 GHz的频带范围内,电压驻波比（VSWR）值大于2;在5.46 GHz处达到了9.23的峰值,阻带范围覆盖Wi MAX（3.4～3.7 GHz）,C-band（3.7～4.2 GHz）,WLAN（5.15～5.35 GHz/5.725～5.825 GHz）这三个频段,且天线增益在阻带内明显降低。

An electromagnetic bandgap（ EBG） structure is designed according to actual application requirements.An ultra-wideband（ UWB） microstrip antenna is designed by loading EBG unit on a designed stop band antenna. A number of parameters are discussed and optimized,and the antenna prototype is manufactured on the basis of physical simulation. The results show that in the frequency band range of 3. 11～ 5. 97 GHz,VSWR value is greater than 2 and at 5. 46 GHz achieves peak value of 9. 23,stop-band range covers Wi MAX（ 3. 4 ～ 3. 7 GHz）,C-band（ 3. 7～ 4. 2 GHz）,WLAN（ 5. 15～ 5. 15 GHz/5. 725～ 5. 825 GHz） bands,and the antenna gain is significantly reduced in stop band.