带金属柱的背腔式矩形贴片天线的谐振频率
Resonant Frequency of Cavity-Backed Rectangular Patch Antenna with Metal Column
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摘要: 采用有限元和界面积分公式混合的数值方法对带金属柱的背腔式矩形贴片天线进行分析,通过分析输 入阻抗,详细讨论了金属柱的大小和馈电点的位置对天线谐振频率的影响.结果表明,天线的谐振频率随金属柱 的尺寸增大而上升,且背腔式贴片天线的内部场结构也与普通贴片天线不同.Abstract: A finite element-boundary integral formulation was introduced to investigate the resonant frequency of a cavity-backed rectangular patch antenna with a metal column. The effects of the size of the metal column and the position of feeding points on the resonant frequency were discussed in detail. The research results show that the resonant frequency of the cavity-backed rectangular patch antenna rises with the size increasing of the metal column, and its inner field is different from that of a common patch antenna.
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