A multi-band radiating array, comprising: a planar reflector; a plurality of first radiating elements defining a first column, the first radiating elements having a first operating frequency range; a plurality of second radiating elements defining a second column alongside the first column, the second radiating elements having a second operating frequency range that is lower than the first operating frequency range; a plurality of third radiating elements interspersed between the second radiating elements in the second column, the third radiating elements having a third, narrowband operating frequency range that is higher than the second operating frequency range but lower than the first operating frequency range, characterised in that the plurality of first radiating elements, the plurality of second radiating elements, and the plurality of third radiating elements are on the planar reflector, wherein the second and third radiating elements (116, 114) respectively comprise: a plurality of elongated arm segments (22, 118) defining at least one dipole antenna; and an elongated stalk (24, 20) that is configured to suspend the elongated arm segments (22, 118) above the planar reflector such that the elongated arm segments (22, 118) radially extend from an end of the elongated stalk (24, 20) and parallel to the planar reflector, wherein the third radiating elements respectively comprise: respective capacitors coupled between the elongated arm segments and the elongated stalk thereof; and respective inductors (132, 134) extending along a length of the elongated arm segments, wherein the respective inductors (132, 134) are serially coupled to the respective capacitors opposite the elongated stalk, wherein the capacitors and inductors (132, 134) are configured such that a common mode resonance of the third radiating elements is present in a lower frequency range than the second operating frequency range. a planar reflector; a plurality of first radiating elements defining a first column, the first radiating elements having a first operating frequency range; a plurality of second radiating elements defining a second column alongside the first column, the second radiating elements having a second operating frequency range that is lower than the first operating frequency range; a plurality of third radiating elements interspersed between the second radiating elements in the second column, the third radiating elements having a third, narrowband operating frequency range that is higher than the second operating frequency range but lower than the first operating frequency range, characterised in that the plurality of first radiating elements, the plurality of second radiating elements, and the plurality of third radiating elements are on the planar reflector, wherein the second and third radiating elements (116, 114) respectively comprise: a plurality of elongated arm segments (22, 118) defining at least one dipole antenna; and an elongated stalk (24, 20) that is configured to suspend the elongated arm segments (22, 118) above the planar reflector such that the elongated arm segments (22, 118) radially extend from an end of the elongated stalk (24, 20) and parallel to the planar reflector, wherein the third radiating elements respectively comprise: respective capacitors coupled between the elongated arm segments and the elongated stalk thereof; and respective inductors (132, 134) extending along a length of the elongated arm segments, wherein the respective inductors (132, 134) are serially coupled to the respective capacitors opposite the elongated stalk, wherein the capacitors and inductors (132, 134) are configured such that a common mode resonance of the third radiating elements is present in a lower frequency range than the second operating frequency range. a plurality of elongated arm segments (22, 118) defining at least one dipole antenna; and an elongated stalk (24, 20) that is configured to suspend the elongated arm segments (22, 118) above the planar reflector such that the elongated arm segments (22, 118) radially extend from an end of the elongated stalk (24, 20) and parallel to the planar reflector, wherein the third radiating elements respectively comprise: respective capacitors coupled between the elongated arm segments and the elongated stalk thereof; and respective inductors (132, 134) extending along a length of the elongated arm segments, wherein the respective inductors (132, 134) are serially coupled to the respective capacitors opposite the elongated stalk, wherein the capacitors and inductors (132, 134) are configured such that a common mode resonance of the third radiating elements is present in a lower frequency range than the second operating frequency range. respective capacitors coupled between the elongated arm segments and the elongated stalk thereof; and respective inductors (132, 134) extending along a length of the elongated arm segments, wherein the respective inductors (132, 134) are serially coupled to the respective capacitors opposite the elongated stalk, wherein the capacitors and inductors (132, 134) are configured such that a common mode resonance of the third radiating elements is present in a lower frequency range than the second operating frequency range.