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Fast and low complexity frequency domain analysis of nonuniform substrate integrated waveguide‐based structures
Author(s) -
Rabaani Karima,
Boulejfen Noureddine,
Kouki Ammar B.,
Ghannouchi Fadhel M.
Publication year - 2020
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/mmce.22135
Subject(s) - lossy compression , reduction (mathematics) , substrate (aquarium) , frequency domain , waveguide , materials science , time domain , electronic engineering , transmission (telecommunications) , computer science , basis (linear algebra) , field (mathematics) , method of moments (probability theory) , optoelectronics , mathematics , telecommunications , engineering , oceanography , geometry , statistics , artificial intelligence , estimator , pure mathematics , computer vision , geology
A novel, low complexity approach for the analysis of nonuniform lossy substrate‐integrated waveguide transmission lines based on the method of moments is proposed. The approach uses frequency‐dependent basis functions derived from the structure's propagation characteristics. Two tapered structures are analyzed, fabricated, and measured to validate the proposed approach. The analytical results of the proposed approach for both structures are compared to those obtained by measurement and by three‐dimensional field simulation. Excellent agreement is observed between the three sets of results with simulation time savings on more than 98% and memory requirement reduction of more than 97%.