全息阻抗调制表面天线关键设计参数的研究

Important Design Parameter of Holographic Modulated Impedance Surface Antenna

针对目前业内对全息阻抗调制表面天线的关键设计参数平均表面阻抗Xs研究的空白,通过数学推导,简化处理全息阻抗调制表面天线的表面阻抗分布,将其等效为一种特殊的正弦阻抗调制表面天线,进而利用其成熟的理论,得到关于全息阻抗调制表面平均表面阻抗Xs的描述与结论。此外,为了验证该结论的正确性,设计了一组对比算例,通过成熟的商业软件进行全波仿真,发现仿真后出现的现象与数学推导的结论相吻合。

For the present lack of research on the important design parameter-average surface impedance of holographic modulated-impedance surface antenna, the surface impedance layout of holographic modulated impedance surface antenna is simplified with mathematic tools. Based on this, the holographic modulated impedance surface antenna may be equivalent to a kind of sinusoidal modulated impedance surface antenna, and finally the description and conclusion of the average surface impedance Xs is acquired via the mature theory of the sinusoidal modulated impedance surface antenna. In addition, a series of comparing antenna are designed to verify the above conclusion. The fullwave simulation with mature commercial software indicates that the phenomenon is in accord with the mathematically derived conclusion.