International Business Machines Corporation

Donald R Barbour

Steven Magdo

Guido Albert Lemke

An improved high performance semiconductor package assembly for interconnecting a plurality of integrated circuit devices having a multilayer substrate with internal wiring including signal wiring and external signal and power connections, a plurality of integrated circuit semiconductor devices supported on the top surface of substrate in electrically connected operative relation, the improvement being a power supply distribution system for providing electrical supply voltages to the devices from the power connections consisting of radial waveguide structure including parallel waveguide planes with a low input impedence to reduce switching noise, the waveguide planes located between the signal fan-out wiring and internal wiring metallurgy and connected in common to all of the plurality of devices.

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Poughkeepsie, NY, United States of America

Donald R Barbour