超材料S参数提取问题

- May 11, 2022 at 3:24 pm
  
  xuanlunhuang20
  Subscriber
  
  你好，关于自带的s参数分析组有两个问题不懂，可不可以帮忙解答一下。
  第一个问题：
- May 11, 2022 at 4:52 pm
  
  Guilin Sun
  Ansys Employee
  
  A1: “离半个波长以上”不是必须，主要是想消除近场，比如速逝场的影响。如果结构没有或者很小的这类近场，没有关系。你也可以用两个分析组用不同距离验证一下（不过，由于数值色散，位置不同位相有一定差别是正常的。
  
  A2：监视器在光源和结构之间一般是为了提高监视器结果的精度，因为有的情况下强反射可能造成光源实际注射误差的问题。参见 Ansys Insight:如何计算吸收率以及监视器应该放在光源背后还是前面

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