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基于SCRLH-TL(Simplified Composite Right/Left Handed Transmission Line)理论提出了一种电感加载形式的共面波导激励槽环天线,通过在槽中间加载折线电感构造SCRLH-TL结构单元,调整折线电感的长度改变天线的谐振特性,有效降低了天线的谐振频率,从而相应地缩小了天线尺寸。利用数值方法分析了天线的性能,在F4B-2低损耗介质板上制作了天线实物。测试结果表明,加载并联电感后,天线尺寸相应地减小了32.12%,相对带宽达到10%,天线效率也有明显提高。天线的实测结果与仿真结果吻合较好。
Based on the theory of Simplified Composite Right / Left Handed Transmission Line (SCRLH-TL), an inductive loaded coplanar waveguide slot ring antenna is proposed. The SCRLH-TL structural unit is constructed by inserting crest-line inductance in the middle of the slot to adjust the length of the crest-line inductance Changing the resonant characteristics of the antenna effectively reduces the resonant frequency of the antenna, thereby reducing the size of the antenna accordingly. The performance of the antenna was analyzed numerically and the antenna was fabricated on a F4B-2 low loss dielectric board. The test results show that after the parallel inductor is loaded, the antenna size is reduced by 32.12% and the relative bandwidth is 10%, and the antenna efficiency is obviously improved. The measured results of the antenna are in good agreement with the simulation results.