Broadband radiating unit and antenna array

The invention provides a broadband radiating unit and an antenna array. The broadband radiating unit comprises a support Balun, a radiation arm, a feeding core, a positioning dielectric block, a positioning support snap, a parasitic radiation sheet and an oscillator pad. The radiation arm is above the support Balun, and an oscillator body is formed by the support Balun and the radiation arm. The feeding core is in the cylindrical hole of the support Balun and is coated and positioned by the positioning dielectric block. The oscillator pad is under the oscillator body. The parasitic radiation sheet is fixed above the positioning support snap which is fixed above the radiation arm. In antenna array, a PCB protruding column is arranged under the support Balun of each radiation unit, the PCB protruding column goes through a reflection plate and a PCB and then is welded to a microstrip grounding block, one end of the feeding core is connected to the oscillator body by using the mode of coupling feed, and the other end goes through the reflection plate and the PCB and then is welded to a microstrip line. The radiating unit of the invention has the advantage of simple assembly, few solders, flexible wire running of a back PCB, and higher intermodulation stability.