The invention relates to an antenna arrangement comprising a generally helical antenna body (10) arranged about a longitudinal axis (30) and enclosing a generally helical signal lead body (20), the antenna body (10) and the signal lead body (20) having opposing rotational directions.Further the invention relates to an implantable electronic device (100, 200, 300), comprising a header (110, 210, 310) attached to a housing (120, 220, 320), wherein an antenna arrangement is arranged in the header (110, 210, 310), the antenna arrangement comprising a generally helical antenna body (10) arranged about a longitudinal axis (30) and coaxially enclosing a generally helical signal lead body (20), the antenna body (10) and the signal lead body (20) having opposing rotational directions.
