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Efficient FDTD analysis of discontinuities in a square coaxial waveguide
Author(s) -
Navarro Enrique A.,
Wu Chen,
Chung Paul Y.,
Litva John
Publication year - 1996
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/(sici)1098-2760(199609)13:1<1::aid-mop1>3.0.co;2-i
Subject(s) - finite difference time domain method , classification of discontinuities , scattering parameters , square (algebra) , phase shift module , scattering , frequency band , optics , electronic engineering , engineering , computer science , acoustics , physics , mathematics , mathematical analysis , telecommunications , insertion loss , geometry , bandwidth (computing)
The finite‐difference‐time‐domain (FDTD) method is applied to model some discontinuities that are present in C‐band beam‐forming networks. In particular, a branch line coupler, a phase shifter, and a slope equalizer are modeled. A FDTD algorithm, which makes use of nonuniform grids and a synthetic excitation, gives good results and saves computer resources. We achieve an efficient algorithm for analyzing BFN structures on a personal computer. Numerical results are given for the scattering parameters of three devices in 3.4(SINGLEBOND)4.2(SINGLEBOND)GHz band. © 1996 John Wiley & Sons, Inc.