Patent ID: 9413329
Filing Date: 2016-08-09
CPC Classification: H03H

Claim Text:
1. A surface acoustic wave band reject filter, comprising: a substrate, the substrate including electrode bars and bonding pads formed on the substrate; and at least one die having a side facing the substrate; at least three surface acoustic wave resonators, all of the surface acoustic wave resonators being formed on the at least one die, the at least one die mounted on the substrate; solder balls in contact with the side of the at least one die facing the substrate, the solder balls positioned to be in electrical contact with the electrode bars and bonding pads on the substrate, the at least three surface acoustic wave resonators being connected by the electrode bars and bonding pads via the solder balls and collectively exhibiting a band reject filter response; all of the surface acoustic wave resonators formed on a single die of the at least one die being adjacent and geometrically aligned so that main axes oriented along a length of each of the surface acoustic wave resonators are one of parallel and coincident.