Broadband oscillator

The utility model relates to a broadband oscillator. The broadband oscillator comprises a supporting column, a radiation sheet located on the supporting column, a connecting sheet connected with the radiation sheet, and a feed copper core for feeding the radiation sheet. Wherein the number of the radiation sheets is four, the four radiation sheets form two groups of half-wave oscillators which areorthogonal to each other, and the number of the connecting sheets is two, and the connecting sheets are respectively connected with the two radiation sheets in the two groups of half-wave oscillators; the radiation sheet comprises an upper radiation sheet and a side radiation sheet which is integrally formed with the upper radiation sheet. The side radiation sheet extends downwards from the lowersurface of the upper radiation sheet. According to the broadband oscillator provided by the utility model, through the arrangement of the upper radiation sheet and the side radiation sheet, the areaof the radiation sheet is i