Patent ID: 9160302
Filing Date: 2015-10-13
Classification: H03H

Abstract:
1. An acoustic wave band reject filter, comprising: a substrate, the substrate including bonding pads formed on the substrate; a plurality of dies, each die having a side facing the substrate and having electrodes; a plurality of acoustic wave band reject filter circuit blocks, at least one acoustic wave band reject filter circuit block being formed on a corresponding die and having at least one resonator, the electrodes being formed on the side of the corresponding die facing the substrate; a plurality of solder balls positioned between the substrate and the dies, to electrically connect bonding pads on the substrate and corresponding electrodes on the plurality of dies and to mechanically fix the dies to the substrate, at least one of the bonding pads on the substrate electrically connecting adjacent dies via the solder balls; and the plurality of acoustic wave band reject filter circuit blocks collectively exhibiting a band reject filter frequency response.