Accession Number : ADD010596

Title :   A Frequency Independent Twisted Wave Front Constant Beamwidth Lens Antenna.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Sternberg,Robert L ; Anderson,Warren A

Report Date : 13 Jun 1983

Pagination or Media Count : 14

Abstract : 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.

Descriptors :   *Patent applications, *Lens antennas, Wavefronts, Twist(Motion), Antenna radiation patterns, Beam forming, Frequency, Diffraction, Width, Antenna arrays, Filters, Plates, Transmitting, Underwater acoustics, Hyperbolas, Parabolic antennas

Subject Categories : Electrical and Electronic Equipment
      Radiofrequency Wave Propagation

Distribution Statement : APPROVED FOR PUBLIC RELEASE