一种新型的双陷波特性超宽带天线的设计

Dual Band-notch Ultra-wideband Antenna with Compact Size

提出了一种新型的具有双陷波特性的超宽带天线。该天线在2.8～12 GHz的宽频带范围内电压驻波比(VSWR)小于2,通过在馈线上引出两个枝节获得了3.3～3.9 GHz和5～6 GHz的双陷波特性。通过调节枝节的长度和宽度可以很容易的调节阻带的位置和宽度。仿真和测试结果表明这种新型的天线具有良好的阻抗特性和辐射特性。该天线结构简单,易于加工,便于集成。文中给出了天线的设计以及不同参数对天线性能的影响。

A compact dual band-notch ultra-wideband antenna with two parasitic single sides is presented in this paper.The proposed antenna yields an impedance bandwidths of 2.8-12GHz with VSWR<2,except for the bandwidths of 3.3-3.9GHz for WiMAX and 5-6GHz for WLAN.In order to achieve band-notch characteristic,two single sides are loaded in the microstrip-fed.It is necessary to control the notched bandwidths and locations to obtain an efficient and notched UWB antenna.Therefore,the notched bandwidths via the lengths and widths of the single sides are studied.The antenna has been successfully designed,simulated and measured,showing good impedance matching,stable gain and radiation patterns.The proposed antenna is simple and easy to machining.The influences of different parameters are studied in this paper.