An improved formula for the fundamental TM-mode cutoff wavenumber of arbitrary waveguides
✍ Scribed by Xingling Zhou
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 99 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0895-2477
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✦ Synopsis
Abstract
This paper presents an improved formula for the fundamental TM‐mode cutoff wavenumber of an arbitrary waveguide based on two independent isoperimetric inequalities and the introduction of a new global integral geometry quantity p. A lot of classic examples show its accuracy and validity for computer‐aided design (CAD). The maximum relative error is less than 1% in most cases and less than 2% even for extreme cases. Note that the mathematical techniques employed here are elementary. Some basic observations about the method are discussed. © 2002 Wiley Periodicals, Inc. Microwave Opt Technol Lett 35: 393–396, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10617