【摘要】 设计了一款微带馈电的超宽带缝隙天线,整体尺寸仅有30 mm×30 mm×1.6 mm,在3.08~11 GHz范围内驻波比小于2,可覆盖超宽带频段。为了实现对Wi MAX和WLAN频段的陷波,分别在地板和馈线上蚀刻不同缝隙,仿真结果表明:在3.2~3.7 GHz,5~5.9 GHz驻波比大于2,增益显著下降,而在通带内仍然保持良好的全向辐射特性和稳定的增益。该天线结构简单、性能优良,能广泛应用于超宽带通信系统中。更多还原

【Abstract】 A microstrip-fed UWB slot antenna is designed,whose overall size is as small as 30 mm × 30 mm × 1. 6 mm. The Voltage Standing Wave Ratio( VSWR) of slot antenna is less than 2 over the frequency range of 3. 08 ~ 11 GHz,covering the whole range of UWB. Two kinds of slots are embedded into the ground plane and feed line to achieve dual band-notched characteristic in the frequency band of Wi MAX and WLAN. The results of simulation show that the VSWR is greater than 2 in the frequency range of3. 2 ~ 3. 7 GHz and 5 ~ 5. 9 GHz where the gain decrease sharply,meanwhile this proposed antenna demonstrates almost omnidirectional radiation patterns and stable gain across the whole operating bandwidth. The band-notched antenna has a simple configuration and good performance,so it can be used in UWB communication widely.更多还原