Abstract: A stripline horizontally polarized dipole and passive director antenna ar, operative at L-band (1220-1280MHz), mounted in a 90.degree. corner reflector constructed of a grid of cylindrical rods which are hinged along its apex permitting folding of the reflector over the antenna array to protect the elements of the array, for example, during transport.

Abstract: An L-band radar and antenna array operating with an existing X-band surveance radar to provide a foliage penetration capability. The foliage penetration antenna consists of an array of L-band, stripline dipole/director elements placed in front of an array of broadwall waveguide slots which define an X-band aperture. The X-band aperture in addition to its own function, serves as a reflector for the dipole/director elements. Aperture sharing is thus provided for a dual frequency antenna without increasing the size of the existing X-band aperture.

Abstract: This invention relates to a deployable antenna or reflector having an offset paraboloid shape. The antenna can be packaged in a small volume. Radial ribs, interconnected by stiffeners, extend from a semicircular support hub. A metalized mesh is stretched between the radial ribs to form a reflective surface.

Abstract: A log sequential antenna is provided which has a unique configuration which allows for a plurality of different feed antenna systems to use an adjustable single slanted reflector screen with its lower end attached to the ground and primary ground reflection to illuminate the screen thus requiring only a single colinear line of feed dipoles. The unique features of the antenna disclosed take advantage of the best features of the prior art antennas while overcoming the limitations of such.

Abstract: Constructions for radio antennae, whose size is made appreciably less than the size of conventional antennae by using the dielectric properties of a mixture of barium titanate and strontium titanate.