應用邊界元法計算TEM小室中高次模的截止頻率
COMPUTATION OF HIGHER-ORDER MODE CUT-OFF FREQUENCIES IN TEM CELLS USING BOUNDARY-ELEMENT METHOD
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摘要: 本文提出了應用邊界元法求解TEM小室中高次模截止頻率的方法,求出了多個TE和TM模式的截止頻率值。對于一對稱小室,由于利用了電壁和磁壁,所以僅研究橫截面的四分之一部分就可以得到滿意的結(jié)果,并且很容易判斷其模式。文中列出了一些計算結(jié)果并與其它方法的數(shù)據(jù)進行了比較。
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關鍵詞:
- TEM小室; 邊界元法; 高次模截止頻率
Abstract: The boundary-element method is proposed to investigate the higher-order mode cut-off frequencies in TEM cells. Both TE and TM modes are considered. For symmetry, only one quarter of the cross-section is analyzed, and electric aad magnetic walls are employed in the cross-section. With this method, mode identification can easily be made by using an eigenvector solution. The obtained results are compared with data available in literatures. -
Myron L. Crawford, IEEE Trans. on EMC, EMC-16(1974)2, 189-193.[2]C. M. Weil, L. Gruner, IEEE Trans. on MTT, MTT-32(1984)6, 638-641.[3]D. A. Hill; J.Microwave Power, 18(1983)2, 181-195.[4]P. F. Wilson, M. T. Ma, IEEE Trans. on EMC, EMC-28(1986)2, 125-130.[5]J. Zhang, Junmei Fu, IEEE Trans. on EMC, EMC-30(1988)6, 563-567.[6]C. A. Brebbia et al., Boundary Element Techniques in Engineering, London: Butterworth, (1980), pp 36-65. -
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