【摘要】 介绍一种具有极宽带特性的印刷单极天线,该天线由椭圆单极贴片和共面的梯形导体地板组成,通过位于地板中央的渐变共面波导来馈电.仿真和实验结果表明,该天线获得了21.6∶1的比带宽(VSWR≤2),覆盖频率范围0.41~8.86 GHz,并具有良好的全向辐射特性,而其面积仅为0.19lλ×0.16lλ(lλ为最低工作频率时的波长).更多还原

【Abstract】 A printed monopole antenna with an extremely-wide bandwidth is proposed,which consists of an elliptical monopole patch and a coplanar trapezoid ground plane. A tapered coplanar waveguide(CPW) feeder in the middle of the ground plane is used to feed the monopole.The simulated and experimental results demonstrate that this antenna achieves a ratio bandwidth of 21.6∶1 for VSWR≤2,covering the frequency range from 0.41 to 8.86 GHz.It has good omni-directional radiation characteristics,with a small area of only about 0.19λ_l×0.16λ_l,where λ_l is the wavelength of the lowest operating frequency.更多还原