Conformal log-periodic antenna assembly

Details Conformal log-periodic antenna assembly Conformal log-periodic antenna assembly

1998-03-17

2000-01-04

Wong, Don

Communications: radio wave antennas

Antennas

Logarithmically periodic

343859, H01Q 1110

Patent

active

06011522&

ABSTRACT:
A conformal log-periodic antenna assembly having a broadband frequency response as a printed circuit board having a plurality of log-periodic antennas etched thereupon. Each log-periodic antenna has a plurality of antenna elements extending from a common trunk. The trunk of each log-periodic antenna extends generally radially from a common point. A foam spacer is disposed at the backside of the printed wiring board. A dielectric layer is disposed at the backside of the foam spacer. An absorber layer is disposed at the backside of the dielectric layer. A metal backing is disposed at the backside of the absorber layer for reflecting lower frequency electromagnetic radiation back to the antenna so as to enhance an intensity thereof. The dielectric layer enhances response across a broad frequency band and the foam spacer positions the antennas a desired distance from the metal backing such that reflections therefrom enhance operation of the antennas.

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