Dual sense, circularly polarized helical antenna

Details Dual sense, circularly polarized helical antenna Dual sense, circularly polarized helical antenna

1982-07-19

1985-01-15

Wilbur, Maynard R.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

343895, H04B 700

Patent

active

044941170

ABSTRACT:
A helical antenna for radiating waves in both orthogonal states of circular olarization that is fed at the base by a first feed and at the tip by a second feed. The amplitude and phase of the signal from the first feed controls the amplitude and phase of the wave in the first orthogonal polarization while the amplitude and phase of the second signal from the second feed independently controls the amplitude and phase of the wave in the second polarization state. Radiated waves of any arbitrary polarization state are formed by adjusting the amplitude and phase of the feed signal. Alternative embodiments are disclosed and claimed.

REFERENCES:
patent: 3039099 (1962-06-01), Chait et al.
patent: 3283332 (1966-11-01), Nussbaum
patent: 3383695 (1968-05-01), Jarek
patent: 3757345 (1973-09-01), Carver
patent: 3820118 (1974-06-01), Hall
patent: 4012744 (1977-03-01), Greiser
patent: 4014028 (1977-03-01), Cone et al.
patent: 4117488 (1978-09-01), Perrotti
patent: 4427984 (1984-01-01), Anderson
Stinehelfer, Industrial Microwave, Jun. 1955 Electronic, FIG. 1, p. 165.

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