Abstract: Embodiments of the present application relate to the technical field of communication, and disclose an antenna element and an antenna array, the antenna element including a dielectric substrate (10), a radiation unit (20) and a feed unit (30); a first support column (11) is provided on the dielectric substrate (10); the radiation unit (20) and the feed unit (30) are an integrally formed structure, at least one of the radiation unit (20) and the feed unit (30) being provided with a first through hole (21), the first support column (11) passing through the first through hole (21), and the first support column (11) and an inner wall of the first through hole (21) being fixedly connected by means of hot melting.

Abstract: Provided in the embodiments of the present disclosure are a low frequency radiation unit, an antenna, a multi-frequency shared antenna, and a fusion antenna architecture. The low frequency radiation unit is disposed on a side of a metal reflection plate, and includes a Printed Circuit Board (PCB) dielectric plate 10, a medium support frame 70, a coaxial cable 80, and metal radiators provided on a front side and back side of 10. 70 is connected to the metal radiators, and is configured to support the metal radiators. 80 is disposed on 70, is connected to the metal radiators, and feeds the metal radiators. Such that a 4G low frequency antenna is flexibly disposed above a 5G high frequency antenna, thereby avoiding interference of Balun with the 5G high frequency antenna; and low mutual coupling is achieved, such that internal space of an antenna is saved.