Miniaturized ultra-wideband base station antenna unit

The utility model discloses a miniaturized ultra wide band base station antenna unit, comprising a dielectric plate, a first feed balun, a second feed balun, a fixed base and a reflecting plate, a pair of half-wave oscillators placed at +/-45 degrees are printed on the front surface of the dielectric plate, and each half-wave oscillator is provided with a hexagonal groove for optimizing impedancematching; the metalized via holes are formed in the tail ends of the half-wave oscillators and used for being connected with the downward metal droop columns, the droop columns can prolong the currentlength, the bandwidth of the antenna is widened, and meanwhile miniaturization is achieved. And rectangular bulges are arranged at the top ends and the lower ends of the first feed balun and the second feed balun respectively and are used for connecting the radiator and the reflecting plate together. Feeder lines are printed on the front faces of the two feed baluns and feed the two half-wave oscillators respectively, and