A transverse electromagnetic mode, TEM, radio frequency , RF, antenna device for a magnetic resonance ,MR, imaging system having an examination space with a substantially static main magnetic field that defines an axial direction of the examination space , the TEM RF antenna device comprising a plurality of rungs made from an electrically conductive material, each rung of the plurality of rungs having at least one axial member that in an operational state is substantially arranged parallel to the axial direction , the axial members of the plurality of rungs being arranged on a lateral surface of a virtual circular cylinder around a center axis along an azimuthal direction in a substantially equally spaced relationship about the center axis , the at least one axial member of each of the rungs having two end regions which begin at an end of a rung and reach to one third of an extension length of the rung , wherein for at least two rungs (144', 144", 244', 244", 344', 344") of the plurality of rungs that are adjacently arranged with regard to the azimuthal direction , each rung (144', 144", 244', 244", 344', 344") comprises at least one transversal member that is galvanically connected to one of the end regions of the axial member of that rung (144', 144", 244', 244", 344', 344") only, wherein the transversal member is aligned with respect to the axial member so as to form sides of an angle that differs from a right angle by less than 60°, and wherein in the operational state, the at least one transversal members of the adjacent rungs (144', 144", 244', 244", 344', 344") are substantially arranged such that there exists at least one location on each of the transversal members of the two rungs (144', 144", 244', 244", 344', 344") that at least have substantially identical azimuthal coordinates. the TEM RF antenna device comprising a plurality of rungs made from an electrically conductive material, each rung of the plurality of rungs having at least one axial member that in an operational state is substantially arranged parallel to the axial direction , the axial members of the plurality of rungs being arranged on a lateral surface of a virtual circular cylinder around a center axis along an azimuthal direction in a substantially equally spaced relationship about the center axis , the at least one axial member of each of the rungs having two end regions which begin at an end of a rung and reach to one third of an extension length of the rung , wherein for at least two rungs (144', 144", 244', 244", 344', 344") of the plurality of rungs that are adjacently arranged with regard to the azimuthal direction , each rung (144', 144", 244', 244", 344', 344") comprises at least one transversal member that is galvanically connected to one of the end regions of the axial member of that rung (144', 144", 244', 244", 344', 344") only, wherein the transversal member is aligned with respect to the axial member so as to form sides of an angle that differs from a right angle by less than 60°, and wherein in the operational state, the at least one transversal members of the adjacent rungs (144', 144", 244', 244", 344', 344") are substantially arranged such that there exists at least one location on each of the transversal members of the two rungs (144', 144", 244', 244", 344', 344") that at least have substantially identical azimuthal coordinates. <EOS>