• DocumentCode
    997553
  • Title

    Low-loss SAW IF filters with new unidirectional IDTs used in digital mobile radios

  • Author

    Hikita, Masayuki ; Okazaki, Kenjiro

  • Author_Institution
    Central Res. Lab., Hitachi Ltd., Tokyo, Japan
  • Volume
    29
  • Issue
    16
  • fYear
    1993
  • Firstpage
    1484
  • Lastpage
    1485
  • Abstract
    A new type of unidirectional IDT having both excitation and reflection electrodes within each section of one wavelength ( lambda 0) was developed. High-performance SAW IF filters used in digital mobile radios with low insertion losses of 3-6 dB at 70 MHz and 3.8 dB at 250 MHz centre frequencies were realised using ST-cut quartz substrates.
  • Keywords
    digital radio systems; mobile radio systems; surface acoustic wave filters; ultrasonic transducers; 250 MHz; 3.6 dB; 3.8 dB; 70 MHz; SAW IF filters; ST-cut quartz substrates; centre frequencies; digital mobile radios; excitation electrodes; insertion losses; reflection electrodes; unidirectional IDT;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el:19930991
  • Filename
    252509
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=997553