Helix antenna including a ground plane, cylindrical helix and a lateral spiral

摘要

An antenna element is disclosed which includes (a) a ground plane (106), (b) a cylindrical helix (104) having a uniform pitch where the cylindrical helix (104) is disposed above the ground plane (106). The cylindrical helix (104) is connectable to a communications apparatus at a first helix end, the first helix end being located near the ground plane (106); and (c) a lateral spiral (102) substantially centred on the axis (100) of the cylindrical helix (104) where the spiral (102) has a first end connected to a second helix end. The second helix end is the opposite end of the cylindrical helix to the first helix end, and the lateral spiral (102) thereby terminates the antenna element.