HELIX ANTENNA

摘要

An antenna element is disclosed, having a ground plane ( 106 ), a helix ( 104 ) disposed above the ground plane ( 106 ), the helix ( 104 ) being connectable to a communications apparatus at a helix end ( 214 ) located near the ground plane ( 106 ), and a spiral ( 102 ) substantially centred on the axis ( 100 ) of the helix ( 104 ) the spiral ( 102 ) having an outer end thereof connected to the other helix end, said spiral ( 102 ) thereby terminating the antenna.