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提出了一种宽带印刷套简天线,此天线通过选择三角渐变的辐射贴片和平面的套筒结构实现了宽频带特性,在VSWR<2.5时实测阻抗带宽可覆盖450~1150 MHz,可用于覆盖数字电视频段(470~862 MHz)。同时辐射方向图在水平面也具有良好的全向性。通过顶加载的形式有效地降低了天线的实际高度。
A wideband broadband antenna is proposed. The antenna can achieve broadband characteristics by selecting the delta patch and the planar sleeve structure. The measured impedance bandwidth can cover 450 ~ 1150 MHz when VSWR <2.5 and can be used to cover Digital TV band (470 ~ 862 MHz). At the same time, the radiation pattern also has good omnidirectionality at the horizontal plane. The top loading effectively reduces the actual height of the antenna.