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An accurate tuning method for dual‐mode cavity filters
Author(s) -
Lee Juseop,
Uhm Man Seok,
Yom InBok,
Lee Seong Pal
Publication year - 2003
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.10991
Subject(s) - dual mode , microwave , reflection (computer programming) , mode (computer interface) , reflection coefficient , filter (signal processing) , dual (grammatical number) , longitudinal mode , electronic engineering , phase (matter) , microwave cavity , optics , engineering , acoustics , physics , control theory (sociology) , computer science , electrical engineering , telecommunications , art , laser , literature , quantum mechanics , programming language , operating system , control (management) , artificial intelligence
An accurate tuning method using a short‐ended dummy cavity is presented for dual‐mode cavity filters. Tuning is based on the match of the computed and measured phase responses of the reflection coefficient. An equivalent circuit model is adopted for computing the required phase response of the reflection coefficient. This method is applied to a 4‐pole longitudinal dual‐mode filter for demonstration. Good agreement is found between the experimental and computed responses. © 2003 Wiley Periodicals, Inc. Microwave Opt Technol Lett 38: 123–125, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10991