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A novel band rejection filter of transmission line type using double spur‐lines
Author(s) -
Eom SoonYoung,
Hong IcPyo
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.25351
Subject(s) - spur , microwave , line (geometry) , transmission line , filter (signal processing) , physics , electrical engineering , optics , computer science , telecommunications , engineering , mathematics , geometry , structural engineering
This letter presents a novel band rejection filter (BRF) using a pair of spur‐lines or double spur‐lines with an opposite direction, which is embedded in a transmission line. The slot length ( L 1 ) of double spur‐lines determines a rejection band and the distance ( L 2 ) between the end points of each spur‐line determines the position of a pass band, which is at the left or right side of a rejection band, respectively. That is, if L 2 is shorter than L 1 , the right side of a pass band can be properly suppressed, otherwise if L 2 is longer than L 1 , the left side of a pass band can be suppressed. Two novel kinds of BRFs were realized at Ku‐band using soft Teflon substrate to verify the validity of the proposed structure. The measured performance was well agreed with the simulated one. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 1880–1883, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25351