CAJ | 학술논문

利用时域有限差分法研究了电磁脉冲对带孔腔体的耦合效应，将时域计算结果变换到频域。利用现有的频域解析结果对该问题进行分析：时域中耦合电场的强弱关系在频域中有所改变；电磁脉冲在腔内激起的谐振与同尺寸谐振腔的谐振模式吻合；与孔外沿作用后的脉冲电场，通过孔的过程可近似看作通过波导的过程；不同脉冲标准入射时，孔和腔内不同位置的频域幅值的比例关系相同。
이용시역유한차분법연구료전자맥충대대공강체적우합효응，장시역계산결과변환도빈역。이용현유적빈역해석결과대해문제진행분석：시역중우합전장적강약관계재빈역중유소개변；전자맥충재강내격기적해진여동척촌해진강적해진모식문합；여공외연작용후적맥충전장，통과공적과정가근사간작통과파도적과정；불동맥충표준입사시，공화강내불동위치적빈역폭치적비례관계상동。
The effect of electromagnetic pulse coupled to the cavity with capture is studied using finite difference time-domain method .The calculating results in time -domain are transformed to frequency domain .Then the results are analyzed in frequency domain using analytical results .The coupling fields big or small in time do-main change in frequency domain .The resonance modes in the cavities excited by the different EMPs are deter -mined only by the physical dimensions .The fields passing through the hole can be taken as the guided waves . The ratios of the magnitudes in frequency -domain located at the hole and the certain points in the cavity are i-dentical and almost do not vary with the incident EMPs .