Wire element directional aerial - has considerably reduced dimensions without gain loss and has null valve or maximum gain in set direction

摘要

A directional emitter or receiver comprises one or more wire elements and functions over the whole frequency spectrum of progressive or stationary waves. When OXYZ represents a three dimensional reference frame, the coordinate points are given by X, t(z)Y, t(z), Z, t(z) and C = z = d, which is a derivable function except for a limited number of points where z = g(x) is a function of the curvilinear (x), and (C) and (d) are real numbers depending on the wire element length and on g. A part of the aerial contains at least the element of the entire aerial, so that the complex formula of the field radiated in the direction OX following a given power input to one of the elements is in the form of an integral of (G+iH)dz, where G and H are real variables and (i) is the square root of -1. A real number(k) exists to define a preferred direction, the number being obtained as the solution of two defined partial differential equations.