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Waveguide filter with improved stopband response using transversal slots
Author(s) -
Mehrshahi Esfandiar,
Rezaiesarlak Reza,
Salehi Mehdi
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.20510
Subject(s) - stopband , transversal (combinatorics) , microwave , acoustics , frequency response , filter (signal processing) , waveguide filter , finite element method , software , waveguide , frequency band , electronic engineering , engineering , band pass filter , physics , prototype filter , low pass filter , optics , computer science , electrical engineering , telecommunications , mathematics , structural engineering , antenna (radio) , mathematical analysis , programming language
Abstract In this article, the design and realization of waveguide filter with improved stop‐band response is presented. By inserting transversal slots at the proper position of cavities, without disturbing the field distribution of the dominant mode, the second longitudinal resonant modes are radiated out. This caused the out‐of‐band frequency response of the filter to be improved. The validity of the proposed technique is confirmed by comparison between measurement values and simulation results from the finite element method through the commercial software (high frequency structure simulator). Also, to assure electromagnetic compatibility the slot surfaces are covered by absorbing material. © 2011 Wiley Periodicals, Inc. Int J RF and Microwave CAE, 2011.