Quadrifilar helix antenna

Details Quadrifilar helix antenna Quadrifilar helix antenna

1991-02-25

1992-12-08

Hille, Rolf

Communications: radio wave antennas

Antennas

Spiral or helical type

343796, H01Q 136

Patent

active

051701766

ABSTRACT:
A quadrifilar helix antenna according to the present invention incorporates four helix conductors wound around an axis in the same winding direction. Each of the helix conductors has a linear conductor which is parallel to its axis at either end or both ends of the helix conductor. The present antenna reduces the effect of multipath fading due to sea-surface reflection in mobile satellite communications.

REFERENCES:
patent: 4396920 (1983-08-01), Grimberg et al.
patent: 4658262 (1987-04-01), Duhamel
Kilgus, "Resonant Quadrifilar Helix Design" The Microwave Journal, Dec. 1970, pp. 49-54.
"Resonant Quadrafilar Helix", Kilgus et al, IEEE Transactions On Antennas And Propagation, May, 1969, pp. 349-351.
"Shaped-Conical Radiation Pattern Performance of the Backfire Quadrifilar Helix", Kilgus, IEEE Transactions On Antennas And Propagation, May, 1975, pp. 392-397.
"Multielement, Fractional Turn Helices", Kilgus, IEEE Transactions On Antennas And Propagation, Jul., 1968, pp. 499-500.

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