Patent ID: 7940148
Filing Date: 2011-05-10
Classification: H01L,H01P,H05K

Abstract:
1. A ball grid array resonator comprising: a ceramic substrate including opposed first and second surfaces defining opposed short side and long side edges; a conductive resonator pattern on said first surface defined by first, second, and third strips of conductive material extending along the length of said substrate in spaced-apart and generally parallel relationship and a fourth strip of conductive material interconnecting said first, second, and third strips of conductive material and extending along the width of said substrate adjacent one of the short side edges of said substrate in a relationship generally transverse to said first, second, and third strips of conductive material; a ground plane on said second surface defined by at least one strip of conductive material; a plurality of conductive vias extending through said substrate in a relationship generally normal to said first and second surfaces and defining opposed ends terminating in one or more of said first, second, third, and fourth strips of conductive material on said first surface and said at least one strip on said second surface; a plurality of first conductive balls overlying said ends of said conductive vias terminating in said first surface so as to define respective ground pads; and at least a second conductive ball disposed over the end of one of said first, second, third, and fourth strips of conductive material on said first surface and defining an RF signal input/output pad, said first strip of conductive material being centrally disposed on said first surface between said opposed short side edges of said substrate and having a width which is less than the width of said fourth strip of conductive material on said first surface, said first strip of conductive material defining a first end unitary with and terminating in said fourth strip of conductive material adjacent the one of the short side edges of said substrate and an opposed end terminating at a point adjacent and spaced from the other of the short side edges of said substrate, one of said ends of said plurality of vias terminating in said fourth strip of conductive material and one of said plurality of first conductive balls being seated over said end of said one of said plurality of vias terminating in said fourth strip of conductive material, said second conductive ball being seated over the end of said first strip of conductive material opposite the end thereof which is unitary with said fourth strip of conductive material to define a path for RF signals through said first and fourth strips of conductive material.