Abstract: A sinuous antenna having N identically generally sinuous arms extending outwardly from a common point and arranged symmetrically on a surface at intervals of 360.degree./N about a central axis. Each antenna arm comprising cells of bends and curves. Each cell being interleaved without touching between adjacent cells of an adjacent antenna arm.

Abstract: A dual mode broadband antenna especially designed to provide an omni-directional low angle or high angle radiation pattern which is predominately horizontally polarized is disclosed herein. This antenna utilizes four wire radiators in the form of an inverted conical log-spiral supported in a vertically extending fashion a predetermined distance above the horizontal ground plane. In order to alternatively operate the antenna in its high and low angle modes, first and second oppositely phased AC currents are applied to the radiators in two different ways using a simple switching device rather than a more complicated network of four hybrid circuits.

Abstract: A dual mode broadband antenna especially designed to provide an omni-directional low angle or high angle radiation pattern which is predominately horizontally polarized is disclosed herein. This antenna utilizes four wire radiators in the form of an inverted conical log-spiral supported in a vertically extending fashion a predetermined distance above the horizontal ground plane. In order to alternatively operate the antenna in its high and low angle modes, first and second oppositely phased AC currents are applied to the radiators in two different ways using a simple switching device rather than a more complicated network of four hybrid circuits.

Abstract: An antenna including a conductive support mast serving to support one or more bays of circular arrays of dipole assemblies around and spaced from the mast. Each dipole assembly consists of at least two dipoles connected in parallel. The lengths and angles of the dipoles with respect to a plane perpendicular to the support mast are adjusted and the dipole assemblies are fed so as to provide circularly polarized radiation broadside to the antenna.

Abstract: An antenna including a conductive support for supporting a plurality of radiating elements in line next to one another above the conductive support and transmission lines serially connecting the radiating elements. The radiating elements of the loop or helix type with a turn length of substantially one wavelength at the operating frequency and configured to support the equivalent of a ring of current with a traveling wave to radiate circularly polarized radiation.