WIDE-BAND UNTUNED DIRECTIONAL ANTENNA Russian patent published in 2005 - IPC

FIELD: antenna equipment, applicable in radio-engineering systems of various purpose as a wide-band small-sized independent antenna, or as a wide-band radiator of composite antenna systems.

SUBSTANCE: the wide-band untuned directional antenna has a flat reflecting screen and a metal staggered radiating cloth, filled by two metal sectors with feed points in their tops and with cutouts in the form of a part of segments formed by arcs of radius R=0.18λ_max and by chords passing at distance l=0.15λ_max from the feed points, and the side surfaces of one metal sector are connected to the mirror ones, relative to them by the side surfaces of the other metal resistance sector R=(100-200)Ohms in the points positioned at distance l=0.15λ_max from the feed points, installed coaxially before the metal staggered radiating cloth at a distance d=(0.2-0.3)λ_max from it is a dielectric sphere with diameter D1=(0.45-0.5)λ_max with dielectric permeability ε=(2-3)λ_max, where λ_max - the maximum wavelength.

EFFECT: stabilized width of the directional pattern in the service frequency band.

3 dwg