Patent ID: 6970139
Filing Date: 2005-11-29
Classification: H01P,H01Q

Abstract:
1. A resonant load for a ridge waveguide antenna, said ridge waveguide antenna having a ridge located on a bottom face thereof and a slot located in an upper face thereof, said resonant load comprising: (a) a ferrite resonant front section positioned within an interior of said ridge waveguide below said slot; (b) a ferrite resonate back section positioned in the interior ridge waveguide below an end portion of said slot; (c) the front section of said resonate load including a a first ferrite post and a second ferrite post, the first ferrite post being positioned on one side of said ridge within the interior of said ridge waveguide and the second ferrite post being positioned on an opposite side of said ridge within the interior of said ridge waveguide; (d) said resonant load absorbing and canceling microwave energy to provide for an improved electromagnetic radiation pattern wherein a reflected wave from said first and second ferrite post of said resonate load and a wave which is primarily reflected from the back section of said resonant load are of equal magnitude and are phase shifted by one hundred eighty degrees to insure cancellation of one another at a plane formed at the front end of first and second ferrite post.