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Compact balanced UWB bandpass filter with one narrow notched band
Author(s) -
Wei Feng,
Jay Guo Y.,
Shi Xiao Wei
Publication year - 2014
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.28392
Subject(s) - band pass filter , resonator , microwave , bandwidth (computing) , microstrip , materials science , filter (signal processing) , wideband , optoelectronics , electronic engineering , physics , electrical engineering , engineering , telecommunications
A compact balanced ultra‐wideband bandpass filter (BPF) with one sharply notched band is presented in this article. The proposed BPF based on microstrip‐to‐slotline transition obtains favorable uniform differential‐mode response and good common‐mode suppression. Moreover, one narrow notched band with a 3 dB bandwidth of 6.8% is realized by introducing one coupled half‐wavelength resonator. The fabricated filter has a more than 25% size reduction compared to the designs reported in open literature. The predicted results are compared with measured ones and good agreement is achieved. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:1626–1629, 2014

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