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A simple estimate for cut‐off wave number of lowest‐order TM mode of a hollow metallic waveguide of arbitrary cross‐section
Author(s) -
Zheng Qinhong,
Ma Li,
Xie Fuyao,
Li Jingtian
Publication year - 2000
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/(sici)1099-047x(200005)10:3<159::aid-mmce3>3.0.co;2-l
Subject(s) - radius , waveguide , microwave , inscribed figure , cross section (physics) , section (typography) , optics , mode (computer interface) , transverse mode , physics , function (biology) , transverse plane , perimeter , mathematics , mathematical analysis , geometry , quantum mechanics , computer science , engineering , laser , computer security , structural engineering , evolutionary biology , biology , operating system
Based on two inequalities, it is presented that the cut‐off wave number of the lowest order transverse magnetic (TM) mode of a hollow metallic waveguide of arbitrary cross‐section is a function of the area, the perimeter and the inscribed circle radius. The results obtained by the derived formulas are compared with exact data reported in the literature. It shows that the proposed method is the reliable general purpose tool for computing the cut‐off wave number of the lowest order TM mode of a hollow metallic waveguide of arbitrary cross‐section. © 2000 John Wiley & Sons, Inc. Int J RF and Microwave CAE 10: 159–163, 2000.