• DocumentCode
    1553755
  • Title

    Tunable active filters having multilayer structure using LTCC

  • Author

    Kageyama, Keisuke ; Saito, Kohki ; Murase, Hisanori ; Utaki, Hideki ; Yamamoto, Toshishige

  • Author_Institution
    Sumitomo Metal Electron. Devices Inc, Hyogo, Japan
  • Volume
    49
  • Issue
    12
  • fYear
    2001
  • fDate
    12/1/2001 12:00:00 AM
  • Firstpage
    2421
  • Lastpage
    2424
  • Abstract
    Two types of tunable filters have been developed at 400- and 800-MHz frequency bands, respectively. These filters have been fabricated with low-temperature co-fired-ceramics multilayer technologies assisted by varactor diodes. The filter size is 5.6 × 5.6 × 3.0 mm. Each filter has approximately 11% and 13% tuning range of frequency with a controlling voltage of 1-4 V, IL < 2.0 dB, and has an attenuation over 40 dB at fo ± 30%, respectively. Temperature stability data is also discussed
  • Keywords
    Q-factor; UHF filters; active filters; band-pass filters; circuit tuning; frequency response; varactors; 1 to 4 V; 400 MHz; 800 MHz; LTCC; bandpass filters; finite-element method; frequency responses; insertion losses; multilayer structure; temperature stability; tunable active filters; varactor diodes; Active filters; Attenuation; Diodes; Frequency; Nonhomogeneous media; Stability; Temperature; Tuning; Varactors; Voltage control;
  • fLanguage
    English
  • Journal_Title
    Microwave Theory and Techniques, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9480
  • Type

    jour

  • DOI
    10.1109/22.971630
  • Filename
    971630
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1553755