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Computer‐aided design of inductively coupled rectangular waveguide filters including tuning elements
Author(s) -
Boria V. E.,
Guglielmi M.,
Arcioni P.
Publication year - 1998
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/(sici)1099-047x(199805)8:3<226::aid-mmce6>3.0.co;2-h
Subject(s) - cad , microwave , waveguide filter , multi mode optical fiber , bandwidth (computing) , filter (signal processing) , computer aided design , computer science , representation (politics) , electronic engineering , band pass filter , prototype filter , equivalence (formal languages) , filter design , acoustics , engineering , engineering drawing , physics , telecommunications , mathematics , discrete mathematics , optical fiber , politics , law , political science , computer vision , operating system
In this paper we first describe a CAD tool for rectangular waveguide filters with tuning elements based on a multimode network representation. The equivalence between tuning elements of circular and square cross section is then investigated. Next we discuss the CAD of a tunable filter to be used over a given frequency range. Finally, measured performances are presented for two types of implementation. The first is a filter structure in which the required frequency of operation is easily changed by replacing its top cover, without affecting the filter bandwidth. The second is a traditional implementation using manually adjusted tuning screws. Measured and simulated results are shown to be in good agreement, thereby fully confirming the validity of the CAD tool described. © 1998 John Wiley & Sons, Inc. Int J RF and Microwave CAE 8: 226–235, 1998.