Center-fed multifilar helix antenna

Details Center-fed multifilar helix antenna Center-fed multifilar helix antenna

1994-04-20

1995-09-12

Hajec, Donald

Communications: radio wave antennas

Antennas

Spiral or helical type

343859, 343853, H01Q 136

Patent

active

054500931

ABSTRACT:
An antenna system including a phasing circuit for producing balanced, phase isplaced, signals for connection to an antenna. The antenna comprises, for each set of balanced phase signals, a pair of antenna elements disposed serially along a helical path. A transmission line, connected to each of the phasing circuit terminals, drives each antenna element pair at a center location by being connected to the proximate ends of each pair. The antenna has a omnidirectional radiation pattern, a wide band width, a good front-to-back ratio and can be constructed in a compact form.

REFERENCES:
patent: 3449657 (1969-06-01), Fredriksson et al.
patent: 3503075 (1970-03-01), Gerst
patent: 3521289 (1970-07-01), Mayes et al.
patent: 3940772 (1976-02-01), Ben-Dov
patent: 5170176 (1992-12-01), Yasunaga et al.

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