• DocumentCode
    3137601
  • Title

    A quadrifilar helical antenna printed on a dielectric prism

  • Author

    Nakano, H. ; Sakai, M. ; Yamauchi, J.

  • Author_Institution
    Coll. of Eng., Hosei Univ., Koganei, Japan
  • fYear
    2000
  • fDate
    2000
  • Firstpage
    1432
  • Lastpage
    1435
  • Abstract
    A quadrifilar helical antenna (QHA) is analyzed using the FDTD method. The four arms of the QHA are printed on a dielectric prism backed by a ground plane. The thickness of the prism is given as B=(1-r AFRR) c/2 with rAFRR being the air-filled region ratio. It is found that the radiation pattern and gain obtained by a QHA whose arms are wound in free space (rAFRR=1) are reproduced by a QHA whose arms are wound on a reduced-size prism of rAFRR=0. The input impedance and gain as a function of rAFRR are evaluated. In addition, the beam direction as a function of the ground plane size is revealed
  • Keywords
    antenna radiation patterns; antenna theory; electric impedance; finite difference time-domain analysis; helical antennas; microstrip antennas; FDTD method; air-filled region ratio; antenna gain; beam direction; dielectric prism; ground plane size; input impedance; printed antenna; quadrifilar helical antenna; radiation pattern; Antenna radiation patterns; Arm; Dielectrics; Finite difference methods; Helical antennas; Impedance; Polarization; Solids; Time domain analysis; Wounds;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Microwave Conference, 2000 Asia-Pacific
  • Conference_Location
    Sydney, NSW
  • Print_ISBN
    0-7803-6435-X
  • Type

    conf

  • DOI
    10.1109/APMC.2000.926105
  • Filename
    926105
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3137601