Planar bandpass filter with 100-dB suppression up to Tenfold passband frequency

Тип публикации: статья из журнала

Год издания: 2014

Ключевые слова: Fractional bandwidths, Microwave bandpass filter, Optimization rules, Passband frequencies, Resonator filters, Stripline resonators, Substrate surface, Suspended substrates, Microwave filters, Substrates

Аннотация: This paper proposes a miniature microwave bandpass filter. It comprises quasi-lumped suspended substrate stripline resonators of a new type. Their common substrate consists of two contiguous dielectric layers. Every resonator in the filter has three parallel strip conductors. Two of them are placed on the outer substrate surfaces and the rest is placed inside the substrate. The filter of the sixth order was designed with the use of special optimization rules that are universal for all resonator filters. The substrate of the fabricated filter was made of RT/Duroid 5880 (?r = 2.2, ? = 0.002) with thickness of 0.127mm. It has dimensions of 12 mm ? 45.5 mm. The measured passband has a center frequency of 1.01 GHz, 3-dB fractional bandwidth of 11%, and minimum insertion loss of 1.4dB. The 100-dB upper stopband extends up to 10.5 GHz.

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Журнал: Progress In Electromagnetics Research C

Выпуск журнала: Vol. 48

Номера страниц: 37-44

ISSN журнала: 19378718


  • Belyaev B.A. (Reshetnev Siberian State Aerospace University)
  • Serzhantov A.M. (Institute of Engineering Physics and Radio Electronics,Siberian Federal University)
  • Tyurnev V.V. (Institute of Engineering Physics and Radio Electronics,Siberian Federal University)
  • Bal'Va Y.F. (Reshetnev Siberian State Aerospace University)
  • Leksikov A.A. (Reshetnev Siberian State Aerospace University)

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