본 연구는 흡수체를 사용하여 개구부가 있는 함체의 차폐효과를 개선하는 방법을 제시하였다. 흡수체는 개구부가 있는 함체의 내부에 배치되어 개구부를 통해 입사하는 전자파가 흡수체를 통과하면서 감쇠되고, 함체의 공동효과로 발생하는 전자파 역시 흡수체에 의해 감소되어 차폐효과가 향상된다. 제시한 구조는 3차원 수치해석을 통해 차폐효과가 개선됨을 확인하였다.
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