A LADDER FILTER USING ONE-PORT SAW RESONATORS

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Bibliographic Information

Other Title
  • ラダー型SAWフィルタ

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Description

Authors already reported a ladder-type SAW filter using one-port SAW resonators. This report describes the detailed features of a ladder-type SAW filter comparing the conventional IIDT-type SAW filter. From experimental comparison, 5 features which are superior to the IIDT filters are found. Furthermore, the study on making the band-width wide is described for the ladder type SAW filters. Conventionally, it is difficult for a ladder type SAW filter to make the band width wider than 3% in fractional bandwidth, because of the limit of electromechanical coupling facotor. Then, we studied on methods to increase fractional band width using inductance (L), and adjusting a frequency interval between a anti-resonant frequency of shunt-arm resonator and a resonant frequency of series-arm resonator.

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Details 詳細情報について

  • CRID
    1573387452196933760
  • NII Article ID
    110003187918
  • NII Book ID
    AN1001290X
  • Text Lang
    ja
  • Data Source
    • CiNii Articles

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