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A novel notch waveguide filter
Author(s) -
Prikolotin Sergey A.,
Kirilenko Anatoliy A.
Publication year - 2010
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.24892
Subject(s) - conductor , microwave , optics , aperture (computer memory) , waveguide , waveguide filter , band stop filter , bandwidth (computing) , oscillation (cell signaling) , perfect conductor , electrical conductor , physics , materials science , engineering , electrical engineering , low pass filter , acoustics , telecommunications , prototype filter , biology , scattering , composite material , genetics
The simple configurations of realistic rejection units placed in a rectangular waveguide are suggested. They are thin stepped conductors connecting the opposite waveguide walls and forming a kind of thin two‐aperture irises easily placed, for example, between waveguide flanges. A rejection phenomenon is based on the interference of the eigenoscillation fields of the iris with two L‐shaped apertures. The rejection frequency and quality factor are controlled over a wide range by the placement and the height of the conductor step. The situation when a stepped perfect conductor provides the resonance of a nearly zero bandwidth is revealed. In other words, such a nontrivial 3D waveguide unit loaded with above‐cutoff waveguides is able to support an eigen oscillation without any radiation loss. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 416–420, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24892