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Full‐wave analysis of H‐plane waveguide junction loaded with metallic posts
Author(s) -
Rezaiesarlak R.,
Mehrshahi E.
Publication year - 2011
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.20515
Subject(s) - hfss , discontinuity (linguistics) , waveguide , scattering , optics , finite element method , waveguide filter , scattering parameters , plane wave , microwave , method of moments (probability theory) , materials science , physics , mathematical analysis , filter (signal processing) , mathematics , engineering , filter design , electrical engineering , statistics , microstrip antenna , quantum mechanics , estimator , antenna (radio) , prototype filter , thermodynamics
Abstract A hybrid method that combines moment method and mode matching technique is presented to study H‐Plane waveguide discontinuity loaded with metallic posts at the junction of two waveguides. By expanding Eigen modes in waveguides, applying continuity of tangential fields at the discontinuity and finally nulling the tangential electric field on the post surface, a system of algebraic equations is solved to obtain current distribution on the posts and consequently scattering parameters of the structure. Then, as an application, an in‐line dual‐mode rectangular waveguide bandpass filter is analyzed using the proposed method along with generalized scattering matrix method. The numerical results are in good agreement with existing full wave finite element method in high frequency structure simulator (HFSS) results and measurements. © 2011 Wiley Periodicals, Inc. Int J RF and Microwave CAE , 2011.