一种电磁带隙结构的快速分析方法
A fast analysis method of electromagnetic bandgap structure
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摘要: 使用直接传输方法分析有限周期Mushroom-like 电磁带隙结构的表面波带隙，与无限周期的电磁带隙结构表面波色散能带图相比，该方法能大大缩短分析时间。将电磁带隙结构放置于波导底面，通过计算波导的传输系数，分析了不同波导高度和电磁带隙结构周期数对带隙范围的影响。加工了Mushroom-like电磁带隙结构样品，并使用一对探针耦合的方法测量了电磁带隙结构的TE和TM表面波带隙，实验结果表明使用直接传输方法确定的表面波带隙与测量数据吻合良好，证明了此方法的有效性。Abstract: Surface wave bandgap of mushroom-like electromagnetic bandgap(EBG) structure with finite units was analyzed by direct transmission method. Compared with surface wave dispersion diagram, surface wave bandgap is fast determined and analysis time obviously shortened. The effect of different waveguide heights and periods of EBG structure on surface wave bandgap was analyzed by simulating the transmission coefficient of waveguide in which the EBG units were placed. The EBG structure dielectric board was fabricated and the surface wave bandgap was measured. Experimental results show that surface wave bandgap determined by this method is consistent with the measured one.
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