×

Notch fed electric microstrip dipole antenna

  • US 3,947,850 A
  • Filed: 04/24/1975
  • Issued: 03/30/1976
  • Est. Priority Date: 04/24/1975
  • Status: Expired due to Term
First Claim
Patent Images

1. A notch fed electric microstrip dipole antenna having low physical profile and conformal arraying capability, comprising:

  • a. a thin ground plane conductor;

    b. a thin rectangular radiation element having a notch extending into said element from one end thereof along the centerline of the element length, said element being spaced from said ground plane;

    c. said radiating element being electrically separated from said ground plane by a dielectric substrate;

    d. said radiating element having an optimum feed point located along the centerline of the length thereof at the inner end of said notch;

    e. said radiating element being fed from a coaxial-to-microstrip adapter, the center pin of said adapter extending through said ground plane and dielectric substrate to the plane of said radiating element;

    f. the length of said radiating element determining the resonant frequency of said antenna;

    g. the antenna input impedance being variable to match most practical impedances as said feed point is moved along said centerline without affecting the antenna radiation pattern;

    h. the antenna bandwidth being variable with the width of the radiating element and the spacing between said radiating element and said ground plane, the width of said notch being a factor as to the effective width of said element, said spacing between the radiating element and the ground plane having somewhat greater effect on the bandwidth than the element width.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×