Bulk acoustic wave filter

One embodiment of the invention relates to a bulk acoustic wave filter, a bulk acoustic wave resonator is connected between the nodes connected to the signal port and the antenna port for transmitting and receiving a signal a first resonator including a base (bulk acoustic resonator); And a second resonant base comprising a bulk acoustic wave resonator is connected between the signal port and the ground; And include a first resonance QF (quality Factor) value of the bulk acoustic wave resonator included in the base may widen the bandwidth to reduce the ripple occurring in the bulk by less than the QF value of an acoustic wave resonator, the output includes the second resonant donating have.