Miniaturization of Quadrifilar Helix Antenna for VHF Band Applications
A. Takacs [1], N.J.G. Fonesca [2], H. Aubert [3] and X Dollat [4]
[1, 3, 4] LAAS-CNRS Univ of Toulouse, [2] CNES (The French Space Agency)
This paper addresses the miniaturization of the VHF band quadrifilar helix antenna. The design and experimental validation are reported in this paper. Such a helix could be used, e.g., for telemetry link in Space-based Multi-band Variable Object Monitor satellite project. Compared to the reference quarter wavelength quadrifilar helix antenna, a significant height reduction from 48% to 62.5% is obtained. Moreover, the measurement and simulation results reveal the capability of the resulting compact antennas to improve slightly the well-known poor impedance matching of classical quarter wavelength quadrifilar helix antennas. A simple and low-cost manufacturing technique is finally detailed for validation purpose.
2009 Loughborough Antennas & Propagation Conference
2009
November
597-600
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