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Träfflista för sökning "WFRF:(Rafique Raihan 1978) srt2:(2008)"

Sökning: WFRF:(Rafique Raihan 1978) > (2008)

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1.
  • Rafique, Raihan, 1978, et al. (författare)
  • Miniaturized superconducting microwave filters
  • 2008
  • Ingår i: Superconducting Science and technology, press.
  • Tidskriftsartikel (refereegranskat)abstract
    • In this paper we present methods for miniaturization of superconducting filters. We consider two designs of 7th order bandpass Chebyshev filters based on lumped elements and a novel quasi-lumped element resonators. In both designs the area of the filters, with a central frequency of 2-5 GHz, is less than 1.2 mm2. Such small filters can be readily integrated on one board for multi-channel microwave control of superconducting qubits. The filters have been experimentally tested and the results are compared with simulations. The miniaturization resulted in parasitic coupling between resonators and within eachresonator that affected primarily stopband and bandwidth increase. The severity of the error depends on the design in particular, and was less prawn when groundplane was used under the inductances of the resonators. The best performance was reached for the quasi-lumped filter with central frequency of 4.5 GHz, quality factor of 100 and 28 dB stopband.
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3.
  • Rafique, Raihan, 1978, et al. (författare)
  • Tunable Impedance Matching Network
  • 2008
  • Ingår i: GigaHertz Symposium, March, 2008. ; , s. 15-
  • Konferensbidrag (refereegranskat)abstract
    • We present superconducting SQUID based tunableimpedance matching networks designed for highly miniaturized filters. The performance of miniaturized filters is very sensitive to parasitic and fabrication related spread. The presented experimental results show that using tunable impedance matching networks, the degraded performances of these types of filters isimproved.
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  • Resultat 1-3 av 3

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