Abstract
전자기 토폴러지 기법은 복잡한 대상을 전자기 결합 경로에 따라 단순화시키고, 연속적인 해석 영역을 분할하여 각 절점에서의 해를 구하는 방법이다. 따라서 복잡한 대형 시스템에서의 전자기 결합 현상을 해석하는 데에 장점을 갖고 있지만, 해석 대상의 단순화된 모델링으로 인한 오차가 발생할 수 있다. 본 논문에서는 power balance method에 기초하여 전자기 토폴러지 기법에서의 오차를 추정하고 정션을 세분화함으로써 다양한 공진기 모델에서의 전도성 및 복사성 전자파 특성을 해석하였다. 해석 결과를 통해 세분화에 따른 정확도 개선 효과를 확인하였고, 시간 영역 유한 차분법 결과와 비교하여 소요 시간과 메모리 단축 효과를 확인할 수 있었다. Electromagnetic topology simplifies a complex analysis area in accordance with electromagnetic coupling. And then electromagnetic topology divides the simplified continuous area into sub-areas and analyzes electromagnetic problems at the sub-areas. Therefore electromagnetic topology has a merit to analyze the electromagnetic coupling in large and complex systems, however simplified modeling technique can generate large errors. In this paper, power balance method is used to estimate errors and subdivide junctions in the electromagnetic topology. The method is applied to analyze conducted and radiated electromagnetic coupling in two kinds of cavity models. Improvement of accuracy was accomplished in accordance with junction subdivision. Moreover we could save computation time and memory comparing with FDTD results.
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