Bandwidth extension for dipole antennas by conjugate reactance loading

Periodically loaded transmission line theory is employed to indicate a loading scheme for broad banding a linear dipole antenna. A conjugate reactance load element (negative inductance) is suggested and a design concept developed. Numerical techniques are used to solve Hallen´s integral equation, and it is shown that a broad-band (8:1 frequency range) dipole with broadside radiation and VSWR < 2 can be realized.