Low Angle, High Angle Quadrifilar Helix Antenna
Patent application, filed 20 Apr 2000
DEPARTMENT OF THE NAVY WASHINGTON DC
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An antenna is provided that can switch from generating a low radiation angle to a high radiation angle. The antenna comprises a quadrifilar helix antenna in which the helical antenna elements have a first pitch at one end of the antenna and a second pitch at the other end of the antenna. Controlling the phase of a driving signal and isolating one section of the antenna are steps that facilitate switching the antenna from generating a pattern with a low elevation angle or high elevation angle.
- Electrical and Electronic Equipment