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文章设计了一种容性加载馈电的小型方环微带天线。首先对容性加载馈电方式进行了研究,容性加载馈电可以较容易地实现细环微带天线的50Ω阻抗匹配,进一步缩小了方环微带天线的尺寸。较为详细地对容性加载馈电方式进行了讨论,并给出了仿真和测试结果。最后实际制作了一副中心频率为1.97 GHz的小型方环微带天线,测试结果表明这种结构可有效缩小天线尺寸,在相同的工作频率下,尺寸比普通贴片天线缩小了32.2%。
The article designs a capacitive loading feed-in small square loop microstrip antenna. First of all, the capacitive loading method is studied. The capacitive loading method can easily realize 50Ω impedance matching of the microstrip antenna and further reduce the size of the square loop microstrip antenna. The capacitive loading method is discussed in detail, and the simulation and test results are given. Finally, a small square-shaped microstrip antenna with a center frequency of 1.97 GHz was actually fabricated. The test results show that this structure can effectively reduce the antenna size and reduce the size by 32.2% compared with the conventional patch antenna under the same operating frequency.