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Electromagnetic design of folded‐waveguide resonator filter with single finite‐frequency transmission zero
Author(s) -
Alotaibi Sultan,
Hong JiaSheng
Publication year - 2008
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.20259
Subject(s) - waveguide filter , center frequency , passband , resonator , microwave , acoustics , filter design , filter (signal processing) , bandwidth (computing) , electronic engineering , prototype filter , attenuation , electromagnetic simulation , mechanical filter , materials science , band pass filter , physics , optics , computer science , engineering , electrical engineering , telecommunications
This article presents electromagnetic (EM) design of a new folded‐waveguide resonator filter that uses an advanced coupling scheme to achieve the desired asymmetric frequency response with an attenuation pole of finite frequency on the high side of the passband. A filter of this type with a fraction bandwidth about 5% at a center frequency of 4.45 GHz has been successfully designed using a commercially available electromagnetic simulator. The designed filter has been fabricated and tested. Simulations and experimental results are presented to validate the design and to show the advantages of this type of filter. This filter also provides a compact size compared with conventional cavity resonator filters. © 2007 Wiley Periodicals, Inc. Int J RF and Microwave CAE, 2008.