• 제목/요약/키워드: meander spurline

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Miniaturized Bandstop Filter Using Meander Spurline and Capacitively Loaded Stubs

  • Liu, Haiwen;Knoechel, Reinhard H.;Schuenemann, Klaus F.
    • ETRI Journal
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    • 제29권5호
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    • pp.614-618
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    • 2007
  • A miniaturized bandstop filter (BSF) is introduced in this paper. The filter consists of one meander spurline and a pair of capacitively loaded stubs. The meander spurline with low resonant frequency and improved slow-wave factor exhibits excellent resonant bandgap characteristics which can be modeled by a longitudinally coupled resonator. The design of the proposed microstrip BSF is presented, and its performance is measured. Measurements show that there is a stopband from 2.3 to 5.6 GHz with $S_{21}$ less than -20 dB. The total length of this BSF equals 23 mm.

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