A compact implantable antenna includes an antenna pattern which includes a ground unit, a screw unit and a first bending unit. The screw unit is disposed facing the ground unit. The first bending unit is disposed at one side of the screw unit and connected to the screw unit.一種微型植入式天線包含一天線圖案,該天線圖案包含一接地單元、一螺旋單元以及一第一彎折單元。螺旋單元與接地單元相對而設。第一彎折單元位於螺旋單元之一側並與螺旋單元連接。1...微型植入式天線11...接地單元111...凹槽12...螺旋單元121...饋入部122...第一螺旋部123...第二螺旋部124...臂13...第一彎折單元14...第二彎折單元