Dual-polarized radiating unit and ultra-wideband antenna

An ultra-wideband antenna comprising:

• a metal reflection plate;
• a support element;
• a first radiating element comprising a first coupling sheet capable of being inserted into the support element alone an insertion direction;
• a second radiating element comprising a second coupling sheet capable of being inserted into the support element along the insertion direction;
• a third radiating element forming a first dipole with the first radiating element, the third radiating element comprising a third coupling sheet capable of being inserted into the support element along the insertion direction, the third coupling sheet being adjacent to the first coupling sheet and extending in parallel with the first coupling sheet;
• and
• a fourth radiating element forming a second dipole with the second radiating element the fourth radiating element comprising a fourth coupling sheet capable of being inserted into the support element along the insertion direction, the fourth coupling sheet being adjacent to the second coupling sheet and extending in parallel with the second coupling sheet, wherein the first radiating element, the second radiating element, the third radiating element, and the fourth radiating element are arranged on the metal reflection plate.