Frequency independent constant beamwidth directional lens antenn

Details Frequency independent constant beamwidth directional lens antenn Frequency independent constant beamwidth directional lens antenn

1988-07-07

1989-07-11

Hille, Rolf

Communications: radio wave antennas

Antennas

With spaced or external radio wave refractor

343911R, H01Q 1508

Patent

active

048476285

ABSTRACT:
A frequency independent constant beamwidth lens antenna concept is descri utilizing a point source to point focus nonspherical lens. 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 indepenent constant beamwidth beam in the far field of the antenna for radiation or reception of planar or nearly planar spherical waves. Moreover, the frequency independent constant beamwidth beam may be steered or scanned in azimuth without moving the lens antenna or a plurality of fixed beams in different directions may be formed simultaneously by the lens antenna.

REFERENCES:
patent: 3787872 (1974-01-01), Kauffman
patent: 4224626 (1980-09-01), Sternberg
patent: 4553629 (1985-11-01), Sternberg
patent: 4591864 (1986-05-01), Sternberg et al.
patent: 4721966 (1988-01-01), McGrath

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