Antenna and phased array antenna

The invention provides an antenna and a phased-array antenna, and belongs to the technical field of communication. The antenna comprises a phase adjustment unit and a radiation unit, and the radiation unit is electrically connected with the phase adjustment unit. Wherein the phase adjusting unit comprises a first dielectric substrate and a second dielectric substrate which are oppositely arranged, a photosensitive dielectric layer arranged between the first dielectric substrate and the second dielectric substrate, a transmission line and a reference electrode layer; orthographic projections of any two of the transmission line, the reference electrode layer and the radiation unit on the first dielectric substrate are overlapped, and the radiation unit is configured to radiate electromagnetic waves transmitted by the transmission line.