Patent ID: 9692141
Date: 2017-06-27
CPC Classifications: H01Q

Claim:
1. An antenna for receiving and/or transmitting electromagnetic radiation, comprising: four radiating elements in the form of a sequentially rotated array of four dual inverted-L-shaped conductive surfaces extending away from a ground plane, each inverted-L-shaped surface comprising a leg and an arm, the legs extending away from the ground plane and having a bend to form the arms which extend substantially parallel to the ground plane towards the center of the ground plane, the leg and arm of each inverted-L-shaped surface lying in the same plane which extends away from the ground plane, each dual inverted L-shaped surface comprises two legs and two arms, and for each dual inverted L-shaped surfaces, one inverted L shaped electrically conducting surface being the upper or outer conducting surface, whereas the other inverted L-shaped electrically conducting surface is the inner or lower conducting surface, the arms of each dual inverted L-shaped surface being separated by a gap, wherein the antenna is configured to receive and/or transmit circularly polarized waves, and wherein the legs extend away from the ground plane at an angle to vertical of between 0 and 30°.