Interconnect structure and method for connecting buried signal lines to electrical devices

An interconnect, comprising;

• a contact pad connected to a signal line in a first stripline circuit, wherein the contact pad and the signal line are covered by two or more layers comprising a dielectric layer covered by a ground layer;
• an opening through the two or more layers to expose a portion of the contact pad;
• and
• a connector in direct contact with a second electrical device and extending into the opening to contact the contact pad to form an electrical connection between the contact pad and the second electrical device, wherein the connector comprises one of a solder ball, a solder ball in a ball grid array, a wire bond, a flip-chip bump, and a surface mounting.

A stripline circuit, comprising:

• a signal layer including a signal line;
• a dielectric layer covering the signal layer;
• a ground layer covering the dielectric layer;
• an opening through the ground and dielectric layers to expose a portion of the signal line;
• and
• a connector in direct contact wit an electrical device and extending into the opening to contact the exposed portion of the signal line to form an electrical connection between the signal line and the electrical device, wherein the connector comprises one of a solder ball, a solder ball in a ball grid array, a wire bond, and a surface mounting.

A method for fabricating an interconnect in a stripline circuit, comprising:

• forming a first dielectric layer, wherein the first dielectric layer is prefabricated with an opening;
• forming a second dielectric layer;
• attaching the first dielectric layer to the second dielectric layer such that the opening exposes a portion of an electrical component located between the first and second dielectric layers;
• and
• introducing a connector into the opening such that the connector makes direct contact with an electrical device and with the electrical component, thereby forming an electrical connection between the electrical component and the electrical device.