The purpose of this research is to develop an understanding of Multichip Modules, (MCMs), more specific those fabricated with a Low Temperature Co-fireable Ceramic (L TCC) tape systems. The study will consist of designing, processing, and testing two generic MCM test patterns. The effects on signal propagation caused by vias and wire bonds, crosstalk for surface and embedded transmission lines, crosstalk between vias, effects of bends in transmission lines are studied and discussed in this work. Time Domain and Frequency Domain measurements are performed and presented in this thesis work for electrical characterization of MCM structures using L TCC systems / Master of Science

An Underwater Digital Signal Processor (UDSP) multichip module (MCM) was designed and fabricated according to specifications outlined by the Naval Surface Warfare Center (NSWC), Dahlgren Division. Specifications indicated that low temperature cofired ceramic (L TCC) technology be used to fabricate the MCM with surface dimensions of 2"x2". The top surface of the module was to be designed to enclose mounted components and bare dice, and the bottom surface was to be equipped with a 144 pin grid array (PGA). The LTCC technology selected for this application incorporated DuPont's 951 Green Tape™ and compatible materials and pastes. A mixed metal system using inner silver system and outer surface gold system was used. Harris Corporation's FINESSE MCMTM, a computer-aided design (CAD) tool, was used to design the surface components and produce the circuit layout. FREESTYLE MCM™, an autorouter, was used to accomplish the routing of the signal layers. The design information provided by FINESSE MCM™ and FREESTYLE MCM™ was utilized to produce the artwork necessary for fabrication. Fabrication of the module was accomplished in part using thick film processes to produce the conducting areas on each layer. The layers were stacked in a press, laminated, and fired. Conducting areas were screen printed on the top surface of the module for wire bonding and on the bottom surface of the module for pin attachment. The main objectives of this thesis work were to convert silicon UDSP MCM to ceramic using LTCC, learn a new tool in CAD design that incorporates an autorouter, apply the tool to design a MCM-C module, and to develop criteria to evaluate the MCM. Future research work includes conducting line continuity testing, materials evaluation to determine reactions at interfaces and via filling, and resistance and electrical crosstalk measurements on the module. / Master of Science

International Telemetering Conference Proceedings / October 25-28, 1999 / Riviera Hotel and Convention Center, Las Vegas, Nevada / The Microelectronics and Computer Technology Corporation (MCC) has developed a rapid turn around process for fabricating multichip modules (MCM’s) called the Flexible Manufacturing of MCM’s (FMM). The Army Research Lab (ARL) in co-operation with the Applied Physics Laboratory (APL), has investigated the survivability of this technology in high-g applications. Comparisons were made to other packaging technologies by constructing a 3-channel digital recorder in this and two other competing technologies.

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Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2004. / Includes bibliographical references (leaves 60-68). Also available in electronic version. Access restricted to campus users.

Thesis (Ph. D.)--University of Texas at Austin, 1999. / Vita. Includes bibliographical references (leaves 110-112). Available also in a digital version from Dissertation Abstracts.