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NING Jun-song, LUO Zheng-xiang. Design of Compact Ultra Broad-Stopband Lowpass Filter[J]. Journal of University of Electronic Science and Technology of China, 2010, 39(2): 223-226,213. doi: 10.3969/j.issn.1001-0548.2010.02.015
Citation: NING Jun-song, LUO Zheng-xiang. Design of Compact Ultra Broad-Stopband Lowpass Filter[J]. Journal of University of Electronic Science and Technology of China, 2010, 39(2): 223-226,213. doi: 10.3969/j.issn.1001-0548.2010.02.015
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Design of Compact Ultra Broad-Stopband Lowpass Filter

doi: 10.3969/j.issn.1001-0548.2010.02.015
  • 1.

    School of Optoelectronic Information,University of Electronic Science and Technology of China Chengdu 610054

  • Received Date: 2008-09-10
  • Rev Recd Date: 2009-02-25
  • Publish Date: 2010-04-15
  • For miniaturization and harmonic suppression, a novel planar compact lowpass filter is presented in this paper. A conventional stepped-impedance lowpass filter is modified by some microstrip steps connected in 90° and some T-shaped transmission lines integrated into the lowpass filter. The proposed lowpass filter has the advantage of low insertion loss (below 0.5 dB at 0～4 GHz), ultra broad stopband (over 40 dB at 5～30 GHz) and compact size (50% reduction). Experiment validates the design concept.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Design of Compact Ultra Broad-Stopband Lowpass Filter

doi: 10.3969/j.issn.1001-0548.2010.02.015
  • 1. School of Optoelectronic Information,University of Electronic Science and Technology of China Chengdu 610054
  • Received Date: 2008-09-10
  • Rev Recd Date: 2009-02-25
  • Publish Date: 2010-04-15

Abstract: For miniaturization and harmonic suppression, a novel planar compact lowpass filter is presented in this paper. A conventional stepped-impedance lowpass filter is modified by some microstrip steps connected in 90° and some T-shaped transmission lines integrated into the lowpass filter. The proposed lowpass filter has the advantage of low insertion loss (below 0.5 dB at 0～4 GHz), ultra broad stopband (over 40 dB at 5～30 GHz) and compact size (50% reduction). Experiment validates the design concept.

NING Jun-song, LUO Zheng-xiang. Design of Compact Ultra Broad-Stopband Lowpass Filter[J]. Journal of University of Electronic Science and Technology of China, 2010, 39(2): 223-226,213. doi: 10.3969/j.issn.1001-0548.2010.02.015
Citation: NING Jun-song, LUO Zheng-xiang. Design of Compact Ultra Broad-Stopband Lowpass Filter[J]. Journal of University of Electronic Science and Technology of China, 2010, 39(2): 223-226,213. doi: 10.3969/j.issn.1001-0548.2010.02.015
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