New printed half-wavelength quadrifilar helix antenna for GPS marine applications

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New printed half-wavelength quadrifilar helix antenna for GPS marine applications

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The authors present a new printed half-wavelength quadrifilar helix antenna using infinite microstrip feeding baluns. This new volute antenna allows low cost, ease of mass production, and substantially improved elevation pattern coverage and circular polarisation properties. Experimental results show that the printed volute antenna has a 3 dB beamwidth of >145° and a front-back ratio of >20 dB.

Inspec keywords: marine systems; satellite antennas; antenna feeds; microstrip antennas; Global Positioning System; electromagnetic wave polarisation; baluns; helical antennas; antenna radiation patterns; mobile antennas

Other keywords: GPS marine applications; printed volute antenna; elevation pattern coverage; quadrifilar helix antenna; circular polarisation properties; infinite microstrip feeding baluns; half-wavelength antenna

Subjects: Single antennas; Antenna accessories

References

    1. 1)
      • C.C. Kilgus . Multi-element, fractional turn helices. IEEE Trans. , 400 - 500
    2. 2)
      • C.C. Kilgus . Resonant quadrifilar helix. IEEE Trans. , 349 - 451
    3. 3)
      • C.C. Kilgus . Resonant quadrifilar helix design. Microw. J. , 49 - 54
http://iet.metastore.ingenta.com/content/journals/10.1049/el_19960129
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