CAJ | 학술논문

设计了一种可展宽频带的U型切角天线。将U型贴片天线进行切角处理，改变天线的结构与电流路径，可以有效展宽天线频带，并使其具有良好的阻抗匹配特性。采用HFSS15.0软件对天线模型进行仿真分析，对切角的长度、宽度进行优化，给出了天线的反射系数S11与U型槽尺寸和切角尺寸间的关系。结果表明，优化后的U型切角天线覆盖了整个2.4~2.5 GHz频带范围，电压驻波比VSWR≤2的相对带宽为19%，天线增益达到7 dB，波束宽度为83o左右。
설계료일충가전관빈대적U형절각천선。장U형첩편천선진행절각처리，개변천선적결구여전류로경，가이유효전관천선빈대，병사기구유량호적조항필배특성。채용HFSS15.0연건대천선모형진행방진분석，대절각적장도、관도진행우화，급출료천선적반사계수S11여U형조척촌화절각척촌간적관계。결과표명，우화후적U형절각천선복개료정개2.4~2.5 GHz빈대범위，전압주파비VSWR≤2적상대대관위19%，천선증익체도7 dB，파속관도위83o좌우。
A U-shaped antenna with corners that could expand bandwidth was designed. Because of cutting away two corners, the structure and the current path of the antenna were changed. The bandwidth of the new antenna was expanded and a good impedance matching was obtained. HFSS15.0 software was used to simulate and analysis the antenna model, in which the length and width of the corner were optimized. A parametric study was carried out to investigate the effects of different size parameters of the corner and the U-slot on reflection coefficient (S11) of antenna. The proposed antenna’s simulated relative bandwidth of VSWR≤2 reaches 19%, covering the whole frequency range suit for 2.4-2.5 GHz. Moreover, the gain of the antenna reaches 7 dB and the beam width is about 83o.