Dual sense, circularly polarized helical antenna

摘要

A helical antenna for radiating waves in both orthogonal states of circular polarization 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.