Abstract: Methods and apparatus for a directive, instantaneous wide bandwidth antenna including a ground plane having a recess with a tapered region accessible by an electromagnetic field via a radiating aperture at a forward end of the recess. The dielectric feed can have a tapered portion proximate the tapered region to guide the electromagnetic field into the recess through the radiating aperture and influence pattern directivity. The antenna can further include a conductive plating disposed at least partially about the dielectric feed in a wedge configuration to influence pattern beam width. The dielectric feed can include a conductive portion on a bottom of the wedge coupled to the conductive plating and to a grooved trace.

Abstract: Methods and apparatus for a directive, instantaneous wide bandwidth antenna including a ground plane having a recess with a tapered region accessible by an electromagnetic field via a radiating aperture at a forward end of the recess. The dielectric feed can have a tapered portion proximate the tapered region to guide the electromagnetic field into the recess through the radiating aperture and influence pattern directivity. The antenna can further include a conductive plating disposed at least partially about the dielectric feed in a wedge configuration to influence pattern beam width.

Abstract: A directive, instantaneous wide bandwidth antenna is disclosed. The antenna can include a ground plane having a recess with a tapered region accessible by an electromagnetic field via a radiating aperture at a forward end of the recess. The antenna can also include an elongate dielectric feed disposed in the recess. The dielectric feed can have a tapered portion proximate the tapered region to guide the electromagnetic field into the recess through the radiating aperture and influence pattern directivity. The antenna can further include a conductive plating disposed at least partially about the dielectric feed in a wedge configuration to influence pattern beam width. The conductive plating can have a taper to facilitate propagation of the electromagnetic field over a range of frequencies. The conductive plating can be disposed toward a rearward end of the recess relative to the radiating aperture.

Abstract: A window guard for preventing children, house pets or objects from inadvertently passing through an open window comprising, in combination, an upper nesting tube subassembly (40U) and a lower nesting tube subassembly (40L); a retaining net (52) coupled between the subassemblies; flange (20U), flange (20L), flange (32U), and flange (32L); and hitch pin (30A), hitch pin (30B), hitch pin (30C), and hitch pin (30D) used to secure the subassemblies to the flanges. The elongated subassemblies are offset from each other, then extended across the window opening. Metal screws are employed to secure the flanges, and thus the entire window net (18), to a window frame; thereby creating an extended configuration for shielding an open window. The window net is adaptable to a variety of window frame sizes or constructions, while providing complete coverage across the entire width of the window opening.