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本文设计了一种具有多阻带特性的平面超宽带天线.该天线由共面波导(CPW)馈电单元和一个椭圆形的辐射单元构成.辐射单元上的C型槽产生了第一条阻带,其中心频率为3.5 GHz.地板上两对称的蛇形槽线产生了第二条阻带,其中心频率为5.5 GHz.第三条阻带,即超宽带高频段的截止阻带,通过馈线上的U型槽实现.天线的测量结果与仿真结果吻合较好,在超宽带频带内实现了3.2 GHz～3.8 GHz,5.05 GHz～5.9 GHz以及高于10.7 GHz的阻带,表明其在工作频带内具有良好的抑制干扰能力.此外,讨论了天线的增益、群时延响应和信号波形保真度,结果表明此天线具有良好的频域特性和时域特性.
In this paper, a planar ultra-wideband antenna with multi-stop band is designed, which is composed of coplanar waveguide (CPW) feeding unit and an elliptical radiating unit. The C-shaped slot on the radiating unit produces the first bar Band with a center frequency of 3.5 GHz The two symmetric serpentine slots on the floor create a second stopband centered at 5.5 GHz The third stopband, the cut-off stopband of the ultra-wideband high-frequency band, passes through The U-shaped slot on the feeder is realized.The measurement results of the antenna are in good agreement with the simulation results and the stopbands of 3.2 GHz ~ 3.8 GHz, 5.05 GHz ~ 5.9 GHz and higher than 10.7 GHz are realized in the UWB band, In addition, the antenna gain, group delay response and signal waveform fidelity are discussed. The results show that the antenna has good frequency domain characteristics and time domain characteristics.