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This paper presents a study on the design guidelines for the common-mode filters with cavity-backed dumbbell-shaped defected ground structures (CB-DB-DGSs). An equivalent circuit model was first developed to explain the physical insight of the CB-DB-DGS common-mode filter. With the help of the equivalent circuit model, the design parameters of the DGS and the frequency behavior of the filter are correlated...
With continued performance scaling of many cores per chip, an on-chip, off-chip memory has increasingly become a system bottleneck due to inter-thread contention. The memory access streams emerging from many cores and the simultaneously executed threads, exhibit increasingly limited locality. Large and high-density DRAMs contribute significantly to system power consumption and data over fetch. We...
Depth traffic occupies a major portion of 3D graphics memory bandwidth. In order to reduce depth reading, we propose employing a low-resolution depth buffer, namely CoarseZ buffer, for tile-level depth culling before per-pixel test. The maximum depth of a tile is stored in the corresponding entry of CoarseZ buffer. Simulation results show that a small CoarseZ buffer can achieve remarkably high culling...
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