Premium
Compact narrow band‐pass filter with λ G /4 short stubs using impedance mismatching of the transmission line
Author(s) -
Yoon KiCheol,
Kim Jeonggon Harrison,
Lee JongChul
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.25419
Subject(s) - return loss , insertion loss , center frequency , transmission line , electrical impedance , microwave , bandwidth (computing) , resonator , electrical engineering , filter (signal processing) , constant k filter , electronic engineering , physics , band stop filter , engineering , band pass filter , telecommunications , low pass filter , antenna (radio)
In this article, a narrow band pass filter with reduced size using the λ g /4 short stubs is presented.The filter size is reduced by realization of transmission line at the second harmonic while the power can be transferred to the output using the fundamental frequency band generated in the resonator and the transmission line in which the impedance mismatching technique is adopted. The experimental results show that the insertion loss is 2.0 dB and return loss is 11.1 dB, and the fractional bandwidth is 10% at the center frequency of 5.8 GHz. The filter size is 19.7 × 8.6 mm 2 . © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 2002–2005, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25419