Patent ID: 8963654
Filing Date: 2015-02-24
Classification: H03H

Abstract:
1. A filtering apparatus, comprising: an input end configured for Dual Input; a first ladder comprising a first plurality of BAWRs (Bulk Acoustic Wave Resonators), the first ladder being connected to the input end; a bride comprising a second plurality of BAWRs, the bride being connected to the first ladder; a second ladder comprising a third plurality of BAWRs, the second ladder being connected to the bridge; and an output end configured for Dual Output, the output end being connected to the second ladder, wherein the first plurality of BAWRs of the first ladder comprise: a first BAWR being connected to a first input of the input end; a second BAWR being connected to a second input of the input end; and a third BAWR being connected between an input of the first BAWR and an input of the second BAWR, wherein the second it of BAWRs of the bridge comprise: a fourth BAWR being connected to an output of the first BAWR of the first ladder; a fifth BAWR being connected to an output of the second BAWR of the first ladder; a sixth BAWR being connected between an input of the fourth BAWR and an output of the fifth BAWR; and a seventh BAWR being connected between an output of the fourth BAWR and an input of the fifth BAWR, and wherein the third plurality of BAWRs of the second ladder comprise: an eighth BAWR being connected to the output of the fourth BAWR of the bridge; a ninth BAWR being connected to the output of the fifth BAWR of the bridge; and a tenth BAWR being connected between an input of the eighth BAWR and an input of the ninth BAWR.