Session: P3P

نویسندگان

  • N. F. NAUMENKO
  • V. I. CHEREDNICK
چکیده

ical coupling factor to realize the required bandwidth of the PCS duplexer. So, the SAW duplexer for the PCS with the only steeper characteristics has been developed to eke out its insufficient temperature stability. The PCS duplexers consisting of FBAR (film bulk acoustic resonator) have also been designed as another approach, but their temperature characteristics are not thorough. In this paper, a new crystal substrate having both the excellent temperature stability and the suitable electromechanical coupling factor has been described. By using this substrate, a SAW duplexer for PCS with the excellent temperature stability together with steep frequency characteristics in cross-band, a low loss, and the large out-of band suppression has been realized.

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تاریخ انتشار 2003