一种具有双陷波特性单极子超宽带天线的设计

A design of ultra-wideband antenna with double band-notched characteristic

提出了一种基于C/U形槽、具有双陷波特性的平面超宽带单极子印制天线。其天线的组成部分包括椭圆球拍形辐射贴片、微带馈电线和矩形地板。通过在球拍形辐射贴片蚀刻C形槽、馈电线蚀刻U形槽的方法,使天线在WiMAX（3.3~3.7GHz）和WLAN（5.15~5.825GHz）频段内具有双陷波性能。仿真和测量结果表明,这种新型天线在通频带（2.5~10.6GHz）内电压驻波比小于2,在2.9~3.9GHz和4.9~6.0GHz两个频段内电压驻波比大于5,阻带的频率可通过蚀刻槽的长、宽来调节。该天线的测试结果与仿真结果吻合良好,且尺寸小巧、结构简单、成本低,可应用于超宽带通信系统。

A design of ultra-wideband printed antenna with double band-notched characteristic based on C/U shaped slots is presented. The antenna is composed of an elliptical radiation patch, a microstrip line feeding and rectangular ground. By etching a C shaped slot on the radiation patch and an U slot on the feed line, dual notched frequency bands are from 3.3 GHz to 3.7 GHz for WiMAX and from 5.15 GHz to 5. 825 GHz for WLAN. Simulated and measured results show that the antenna has an available passband from 2.5 GHz to 10.6 GHz which covers the UWB frequency band, and the voltage standing wave ratio greater than 5 from 2.9 GHz to 3.9 GHz meanwhile 4.9 GHz to 6.0 GHz rejection bands. Moreover, the frequency of the stophand can be adjusted by the length and width of etching slots. The simulation and measurement of this antenna is consistent well. This antenna features are small size, simple structure, low cost, etc. , and it can be used in ultra-wideband communication systems.