• DocumentCode
    1496859
  • Title

    Compact bandstop filter using coupled-line section

  • Author

    Qian, K.W. ; Tang, X.H.

  • Author_Institution
    EHF Key Lab. of Fundamental Sci., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
  • Volume
    47
  • Issue
    8
  • fYear
    2011
  • Firstpage
    505
  • Lastpage
    506
  • Abstract
    A new compact bandstop filter with a coupled-line structure is proposed. Stopband rejection depth and bandwidth can be controlled by the configuration of the coupling section, and good return loss is realised by properly adjusting the impedances of two open-circuited stubs. Design equations are obtained using a lossless transmission line model. To validate the analysis, a bandstop filter with about 72% fractional bandwidth at 5 GHz has been fabricated. The implementation area is 0.32λg × 0.18λg.
  • Keywords
    band-stop filters; microwave filters; compact bandstop filter; coupled-line section structure; design equation; frequency 5 GHz; lossless transmission line model; open-circuited stubs; return loss;
  • fLanguage
    English
  • Journal_Title
    Electronics Letters
  • Publisher
    iet
  • ISSN
    0013-5194
  • Type

    jour

  • DOI
    10.1049/el.2011.0107
  • Filename
    5751797
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1496859