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A compact low‐pass filter with ultra‐wide stopband
Author(s) -
Kim Kyunghoon,
Jung JongHo,
Kee ChulSik,
Park Ikmo,
Lim H.
Publication year - 2004
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.20452
Subject(s) - stopband , transition band , cutoff frequency , microstrip , elliptic filter , low pass filter , stub (electronics) , microwave , electronic engineering , band stop filter , acoustics , materials science , prototype filter , filter (signal processing) , engineering , optoelectronics , physics , band pass filter , electrical engineering , telecommunications
This paper presents a compact microstrip low‐pass filter with ultra‐wide stopband and sharp cutoff frequency response. The conventional shunt open‐stub filter with a slot on the ground plane has a wide stopband at high frequency, and the coupled open‐stub microstrip filter has a sharp cutoff response at low frequency. The combination of these structures gives the filter the characteristics of an ultra‐wide stopband and a prominent cutoff sharpness. © 2004 Wiley Periodicals, Inc. Microwave Opt Technol Lett 43: 303–306, 2004; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.20452