A new technique for increasing the gain of the log periodic dipole antenna †

Abstract

Abstract A technique for increasing the gain of the log periodic dipole antenna is presented. An axially displaced half-wave dipole antenna provides a narrower half-power beam width and gives slightly increased gain as compared to the conventional half-wave dipole antenna. Using this fact it is theoretically shown that the gain of the log periodic dipole antenna can be increased by axially displacing the feed points of the constituent dipoles of the log periodic dipole antenna. Typical theoretical results are given for different values of the axial feed displacement.