Patent ID: 8193997

Claim:
A directional planar log-spiral slot antenna comprising: a log-spiral slot antenna comprising a feed-point configured to transfer energy to and from said log-spiral slot antenna, log-spiral shaped slots that begin at said feed-point and spiral outward and away from said feed-point toward an outer portion of said log-spiral slot antenna, an antenna impedance; an energy absorbent backing; an energy absorbent siding coupled with said energy absorbent backing and further coupled with said log-spiral slot antenna; a cavity behind said log-spiral slot antenna and in front of a portion of said energy absorbent backing; a cable connector having an input impedance wherein said cable connector is coupled to the feed-point; and, a container configured to hold said log-spiral slot antenna, said energy absorbent backing, said energy absorbent siding, said cavity, said cable connector.