Utilizing the benefits of varactor and bowtie and fractal structures , some interesting characteristics of these elements were found 该结构单元为设计宽频带、动态方向图扫描的阵列反射天线奠定了基础。
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Compared pec pmc method with periodic boundary method . basing on these , writes stimulation program for the wave absorber of bowtie patch array loading resistance , and computes its reflectance 比较了电壁磁壁和周期边界条件两种截断方法,在此基础上针对蝴蝶结型加载阻抗吸波材料,采用c语言编写仿真程序,计算了它的反射率。
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The main content of chapter ii describes the positive influence of rounded corners on keen vertexes of wide slot antennas and bowtie ones . a great deal of experiments and simulations prove the conclusion mentioned above 第二章主要讲述在宽槽天线( wideslotantenna )和多个蝴蝶结天线( bowtieantenna )辐射面的尖锐顶点处倒圆角对天线性能的改善作用。
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For bowtie antennas , this method can produce a better return loss in the higher frequency band than the original ones , and at the same time , the radiation pattern bandwidths of the new antennas can be broadened more or less 对蝴蝶结天线而言,应用这种方法得到的蝴蝶结天线在高频段比原天线具有更好的反射损耗,天线的方向图带宽有不同程度的扩展。
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This method rounding the keen vertexes on the plane antennas fits for not only wide slot antennas and bowtie antennas but many other plane ones . the method is not applied first in the thesis ; however , the foregoing papers did not do some summarizations on it 这种在天线尖锐顶点处倒圆角来改善天线性能的方法不仅仅适用于宽槽天线和蝴蝶结天线,对很多平面天线也是适用的,此论文并非第一个应用本方法的工作,但是前人并没有对此进行总结,本文总结的这一改善天线性能的方法得到多篇已发表的文献支持。
