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The design of double ridge waveguide filter using conventional stepped impedance low‐pass filter method
Author(s) -
Yazdani Mohsen,
Murphy Luke,
Mallahzadeh Alireza,
Arvas Ercument,
Mautz Joseph
Publication year - 2014
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/mop.28022
Subject(s) - hfss , low pass filter , ridge , cutoff frequency , filter (signal processing) , classification of discontinuities , microwave , microstrip , waveguide filter , electrical impedance , electronic engineering , acoustics , engineering , optics , physics , prototype filter , electrical engineering , mathematics , telecommunications , geology , mathematical analysis , microstrip antenna , paleontology , antenna (radio)
A simple design procedure for a double ridge waveguide low‐pass filter (LPF) is proposed in this article. The procedure follows similar steps involved in a stepped impedance microstrip LPF. The starting point is calculating lumped element low‐pass prototypes and converting them to the double ridge waveguide sections. Step discontinuities are also studied and a lumped element model is proposed by comparing S parameters calculated by HFSS software. The results are then applied to design a six order maximally flat double ridge LPF with 4 GHz cutoff frequency. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:120–124, 2014