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Design of cross‐coupled stepped‐impedance resonator bandpass filter using low‐temperature cofired ceramic technology
Author(s) -
Qian Kewei,
Tang XiaoHong,
Tang Wei
Publication year - 2011
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.26243
Subject(s) - resonator , band pass filter , materials science , electrical impedance , ceramic , microwave , center frequency , filter (signal processing) , electronic engineering , optoelectronics , acoustics , electrical engineering , engineering , telecommunications , composite material , physics
A novel compact half‐wavelength cross‐coupled stepped‐impedance resonator filter using low‐temperature cofired ceramic (LTCC) technology is presented. The filter not only has good selectivity due to the controllable transmission zeros but also has a small size by the virtue of LTCC structure. Based on the theory of cross‐coupled stepped‐impedance resonators and 0° feed structure, a bandpass filter with the center frequency of 1.25 GHz has been designed and fabricated. Good agreement between measured and simulated results is observed. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:2201–2204, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26243