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Frequency Independent Twisted Wave Front Constant Beamwidth Lens Antenna.
DEPARTMENT OF THE NAVY WASHINGTON DC
Pagination or Media Count:
A frequency independent constant beamwidth lens antenna concept is described. The device may be configured in various ways such as with a cylindrical lens with a retina. The essential feature is that a twisted planar or hyperbolic paraboloidal phase or wave front is formed by the antenna which then in turn produces a frequency independent constant beamwidth beam in the far field of the antenna. Moreover, the frequency independent constant beamwidth beam may be steered or scanned in azimuth without moving the lens.
APPROVED FOR PUBLIC RELEASE