C. Durward Rogers

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A VLSI design system called VIVID is the heart of a newly developed, vertically integrated design environment. This environment provides support for all phases of design from high-level system specification through on-site fabrication to construction of prototype systems. Key features already Implemented include: the use of a circuit description language at(More)
In the past, Virtual-Grid Compactors have not been well received because they generated sparse layouts. In analyzing this problem, we found three major areas where improvements could be made: breaking the virtual-grid lines into segments; decoupling the placement of non-interacting layers; and eliminating the centered nature of elements. The result is a(More)
<italic>This paper describes the</italic> VIVID <italic>(Vertically Integrated VLSI Design) System developed at the Microelectronics Center of North Carolina. The system is based on a symbolic, virtual-grid design methodology that greatly reduces the design time for custom VLSI circuits. This methodology has made it possible to provide, in a single(More)
We have tested a high-power 11.4-GHz rf generator which consists of a 5.7-GHz chopping system and two 11.4-GHz traveling-wave output structures. The device was designed to generate about 500 MW of pulsed rf power at 11.4 GHz when driven by a I-kA, 3-MeV induction beam. Problems with beam breakup in the output structures have limited the width of the rf(More)
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