Patent ID: 6011522
Filing Date: 2000-01-04
Classification: H01Q

Abstract:
A conformal log-periodic antenna assembly having a broadband frequency response, the antenna assembly comprising:a) a printed wiring board having front and back sides;b) a plurality of non-overlaping log-periodic antennas etched upon at least one side of the printed wiring board, each log-periodic antenna separated by a spacing extending generally radially from a common point, each log-periodic antenna comprising a plurality of antenna elements extending from a common trunk, the trunk of each log-periodic antenna extending generally radially from the common point;c) a foam spacer having front and back sides disposed at the back side of the printed wiring board;d) a dielectric layer having front and back sides disposed at the back of the foam spacer;e) an absorber layer having front and back sides disposed at the back of the dielectric layer;f) a metal backing disposed at the back side of the absorber layer for reflecting lower frequency electromagnetic radiation back to the antennas so as to enhance an intensity thereof;g) wherein the dielectric layer enhances response across a broadband and the foam spacer positions the antennas a desired distance from the metal backing.