Ground screen for vertical log periodic antenna

Claim 1

AN ANTENNA GROUND SCREEN STRUCTURE FOR A DIRECTIONAL ARRAY OF THE LOG PERIODIC TYPE EMPLOYING A SUCCESSION OF MUTUALLY SPACED VERTICAL ELECTROMAGNETIC RADIATING ELEMENTS EXTENDING UPWARDLY FROM A COMMON GROUND SCREEN AXIS AND ADAPED TO BE EXCITED IN PROGRESSIVELY VARYING PHASE RELATIONSHIP COMPRISING, RADIALLY EXTENDING MUTUALLY ANGULARLY SPACED CONDUCTORS PROJECTING FROM THE PROXIMITY OF THE BASE OF SUCCESSIVE ANTENNA RADIATING ELEMENTS, THE GROUP OF RADIAL CONDUCTORS EXTENDING FROM THE PROXIMITY OF THE BASE OF EACH SUCH ANTENNA RADIATING ELEMENT BEING ELECTRICALLY CONNECTED TOGETHER AT THEIR COMMON CENTER AND ADDITIONAL CONDUCTORS CONNECTED TO THE ENDS OF CERTAIN OF SAID RADIAL CONDUCTORS AND EXTENDING SUBSTANTIALLY PARALLEL TO THE COMMON GROUND SCREEN AXIS OF SAID ARRAY AND TO THE DIRECTION OF PROPAGATION OF THE SAID ARRAY, CERTAIN OF SAID RADIAL CONDUCTORS ASSOCIATED WITH ONE ANTENNA ELEMENT INTERSECTING AND BEING ELECTRICALLY CONNECTED TO CERTAIN OF THE RADIAL CONDUCTORS ASSOCIATED WITH AN ADJACENT ANTENNA ELEMENT TO PRODUCE A HIGHLY EFFECTIVE GROUND SCREEN WITH THE USE OF BUT A MINIMUM CONDUCTOR MATERIAL.