Dual notch fed electric microstrip dipole antennas

Claim 1

A dual notch fed electric microstrip dipole antenna having low physical profile and conformal arraying capability, comprising: a. a thin ground plane conductor; b. a thin square radiating element spaced from said ground plane; c. said square radiating element being electrically separated from said ground plane by a dielectric substrate; d. said square radiating element having a first feed point located along the centerline of the length thereof and a second feed point located along the centerline of the width thereof, said first and second feed points being equidistant from the center of said square radiating element; e. said square radiating element having a first notch extending into said square radiating element from the outer edge thereof along the centerline of the length to said first feed point and having a second notch extending into said square radiating element from the outer edge thereof along the centerline of the width to said second feed point; f. the length of said square radiating element determining the resonant frequency of said antenna; g. the antenna input impedance being variable to match most practical impedances as said feed points are equidistantly moved along said respective length and width centerlines between the square radiating element center point and the edge of the square radiating element; h. the antenna bandwidth being variable with the width of the square radiating element and the spacing between said square radiating element and said ground plane, said spacing between the square radiating element and the ground plane having somewhat greater effect on the bandwidth than the square radiating element width; i. said radiating element being operable to oscillate in two modes of current oscillation, each of said two modes being orthogonal to the other.