Patent ID: 8643191

Claim:
An integrated circuit chip comprising: a substrate, having a first side and a second side opposite said first side, said substrate comprising at least a semiconductor layer; and a device for at least one of on-chip power dividing and on-chip power combining on said integrated circuit chip, said device comprising: a first metal layer on said first side; a second metal layer on said second side; and a plurality of interconnects extending vertically through said substrate from said first metal layer to said second metal layer, said interconnects comprising: a first interconnect; a set of second interconnects annularly arranged about said first interconnect; and a set of third interconnects annularly arranged about said set of second interconnects, said first metal layer having a first opening aligned with and larger than said first interconnect such that said first interconnect is disconnected from said first metal layer and one of said first metal layer and said second metal layer having a plurality of second openings, each second opening being aligned with and larger than a second interconnect such that said second interconnect is disconnected from said one of said first metal layer and said second metal layer.