Abstract: The present invention relates to an atmospheric discharge protection arrangement in an antenna (10) arranged in communication with a hull of an aircraft (11), the antenna comprising a housing, consisting of at least a first side (14), a second side (15), a third side (16a) and a fourth side (16b), at least one of the third and fourth sides being at least transparent for electromagnetic waves. The protection arrangement is an internal protection arrangement comprising the first side (14) electrically coupled to the second side (15) through at least one antenna element (24), the first and second sides consisting of a conductive material, and that the second side being connected to hull of the aircraft (11).