A mobile radio antenna includes a complete reflector is formed as one piece or by or connected to the at least one or more reflectors, or comprises at least one or more reflectors. The complete reflector comprises on the two outer longitudinal sides thereof extending in the longitudinal direction a first shield wall which shields the first and/or passive component space and/or distribution space, and a second shield wall connects directly or indirectly to the first shield wall. The two second shield walls extending on the longitudinal sides of the complete reflector protrude in the backwards direction of the antenna across a mounting plane or a section plane along which plane the first or passive component space and/or distribution space is separated or divided from the second or active component space.