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Fast and efficient analysis of transmission lines with arbitrary nonuniformities of sub-wavelength scale

Javadzadeh, S. M. H ; Sharif University of Technology | 2012

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  1. Type of Document: Article
  2. DOI: 10.1109/TMTT.2012.2201740
  3. Publisher: 2012
  4. Abstract:
  5. The Telegrapher's equations for a general nonuniform transmission line (NUTL) is analytically solved when the nonuniformities are of sub-wavelength scale. The proposed solution is based on an approximation of the chronological ordering operator for the Telegrapher's equations in an arbitrary NUTL. The proposed approximation is quite accurate when the transmission line has sub-wavelength nonuniformities. The scale of transmission line nonuniformity is assessed by using the concept of minimum resolvable length of nonuniformity (MRLN), which is based on the physically intuitive idea that electromagnetic waves are not affected by spectrally mild nonuniformities. The MRLN is inferred by using the spatial Fourier transform of the characteristics impedance of the NUTL. The proposed formulation is verified by using the measured scattering parameters of three different NUTLs
  6. Keywords:
  7. Analysis of microwave passive component ; Modeling techniques ; Nonuniform transmission lines (NUTLs) ; Passive component modeling ; Characteristics impedance ; Efficient analysis ; Microwave passive component ; Modeling technique ; Non uniform transmission lines ; Non-uniformities ; Nonuniformity ; Passive components ; Spatial Fourier Transform ; Sub-wavelength ; Telegrapher's equations ; Microstrip lines ; Scattering parameters ; Transmission line theory ; Electric lines
  8. Source: IEEE Transactions on Microwave Theory and Techniques ; Volume 60, Issue 8 , 2012 , Pages 2378-2384 ; 00189480 (ISSN)
  9. URL: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6220868