Wide-frequency bipolarization low-isolation die-casting radiating unit

The utility model discloses a wide-frequency bipolarization low-isolation die-casting radiating unit, relating to an antenna radiating unit. The structure of the wide-frequency bipolarization low-isolation die-casting radiating unit is as follows: a plastic base (5) is arranged in a middle connecting hole of a metal reflection board (6); the plastic base (5), a U-shaped Balun and support arm (4), a radiating unit vibrator arm short-circuit bar (9) and two mutually orthogonal symmetric vibrators are sequentially connected from the bottom up; each symmetric vibrator is formed by connecting two vibrator arms (2) with an insulating spacer (3) through a metal feed sheet (1); and the vibrators and a feed cable (7) are connected, the feed cable (7) passes through the plastic base (5) and then is externally connected with an antenna feed network. The utility model has the advantages of simple and reliable structure, easiness for installation, low manufacturing cost, and excellent wide band and low isolation performances; in addition, the utility model can be widely applied to communication systems of WCDMA (Wideband Code Division Multiple Access), PCS (Personal Communication Service), GSM (Global System for Mobile Communication) and the like.