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Wideband cross‐coupled filter using defected stepped impedance resonator
Author(s) -
Wu Bian,
Lai Xin,
Su Tao,
Liang ChangHong
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.24972
Subject(s) - resonator , microwave , filter (signal processing) , wideband , electrical impedance , microstrip , coupling (piping) , electronic engineering , engineering , acoustics , physics , electrical engineering , materials science , optoelectronics , telecommunications , mechanical engineering
Abstract A novel wideband cross‐coupled band‐pass filter based on defected stepped impedance resonator (DSIR) is presented in this article. Although the DSIR has opposite impedance characteristic and field distribution to the microstrip SIR, its resonant property is similar to the latter. The internal coupling coefficients of DSIRs are found to be large enough for the wideband filter design. A four‐pole, cross‐coupled band‐pass filter with f 0 = 1.6 GHz and FBW = 12% is designed and fabricated using the folded DSIR. Experimental result has good agreement with the simulation. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 558–561, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24972