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Industry trends aimed at integrating higher levels of circuit functionality have triggered a proliferation of mixed analog-digital systems. Magnified noise coupling through the common chip substrate has made the design and verification of such systems an increasingly difficult task. In this paper we present a fast eigendecomposition technique that(More)
Accurate modeling of noise coupling effects due to crosstalk via the substrate is an increasingly important concern for the design and verification of mixed analog-digital systems. In this paper we present a technique to accelerate the model computation using BEM methods that can be used for accurate and efficient extraction of substrate coupling parameters(More)
The extraction of substrate coupling resistances can be formulated as a first-kind integral equation, which requires only discretization of the two-dimensional contacts. However, the result is a dense matrix problem which is too expensive to store or to factor directly. Instead, we present a novel, multigrid iterative method which converges more rapidly(More)
Industry trends aimed at integrating higher levels of circuit functionality have triggered a proliferation of mixed analog-digital systems. Magniied noise coupling through the common chip substrate has made the design and veriication of such systems an increasingly diicult task. In this paper we present a fast eigendecomposition technique that accelerates(More)
Industry trends aimed at integrating higher levels of circuit func-tionality have triggered a proliferation of mixed analog-digital systems. Magnified noise coupling through the common chip substrate has made the design and verification of such systems an increasingly difficult task. In this paper we present a new method based on a precorrected-DCT(More)
— Accurately accounting for three-dimensional (3-D) geometry and distributed RC effects in on-chip interconnect is important for predicting crosstalk in memory cells, analog circuits, and regions of congested routing in digital circuits. In this paper we describe a multipole-accelerated, mixed surface-volume formulation, and a preconditioned model-order(More)
Abstract: Multipole-accelerated surface-volume methods have proved to be very efficient techniques for delay and cross-talk simulation of three-dimensional integrated circuit interconnect. However, to be efficiently combined with transistor circuitry in a SPICE-level simulation, reduced-order models which have accurate low-frequency behavior must be(More)
It has recently been shown that the boundary-element method can be used to perform accurate cross-talk simulations of three-dimensional integrated circuit interconnect. However, the computational complexity grows as N2, where N is the number of surface unknowns. Straightforward application of the fast-multipole algorithm reduces the computational complexity(More)
Imidazoline I1-receptors (I1R) are known to regulate blood pressure and rilmenidine, an agonist, is widely used as antihypertensive agent in clinic. However, the role of I1R in feeding behavior is still unclear. In the present study, we used the agonist of I1R to investigate the effect on hyperphagia in streptozotocin (STZ)-induced diabetic mice.(More)