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A stochastic electromagnetic-circuit modeling workflow is presented for the computer-aided analysis of electromagnetic interference effects in multi-scale, shielded environments. The multi-scale complexity of the environment is tackled through the selective relaxation of the full electromagnetic coupling between different sub-domains when appropriate. The Stochastic Collocation technique is relied...
This paper proposes Stochastic LIM for simulations of transmission lines with uncertainties. Such simulations are traditionally performed using sampling techniques such as Monte Carlo, which are slow to converge and often computationally expensive. Since analysis of uncertainties in electronic packaging is critical to design for reliability and performance, simulators such as Stochastic LIM can provide...
Finite difference numerical schemes are shown to be effective at propogating the effects of uncertainties in time domain. Stochastic LIM is based on the Stochastic Galerkin Method applied to finite difference leapfrog-based Latency Insertion Method. In this paper, two techniques for simulating transmission lines exhibiting uncertainties are discussed. The geometric and material uncertainties in a...
In this paper, the carbon-based interconnects such as the horizontal multilayer graphene (MLG) interconnects and the vertical carbon nanotube through-silicon vias (CNT TSV) are investigated. Based on the equivalent circuit model, the electrical performance of these carbon-based interconnects are studied. Furthermore, by combining them, one novel carbon-based 3-D interconnect is presented and studied...
The concept of graphene-based two-dimensional leaky-wave antenna (LWA), allowing both frequency tuning and beam steering in the terahertz band, is proposed in this paper. In its design, a graphene sheet is used as a tuning part of the high-impedance surface (HIS) that acts as the ground plane of such 2-D LWA. It is shown that, by adjusting the graphene conductivity, the reflection phase of the HIS...
This paper presents a stochastic Latency Insertion Method formulation using the generalized Polynomial Chaos framework. The proposed method enables fast simulation of circuits with uncertain elements. When the mean and variance of circuit elements are provided in the netlist, this method can calculate the statistics of the transient response to arbitrary sources using an augmented state space system...
Fast and accurate evaluation of system failure rate is performed using stochastic collocation methods. First, we demonstrate that variability in I/O performance, such as driven voltage and slew rate, will impact failure probability of the link. For instance, higher slew rates will lead to increased levels of crosstalk between signals. Crosstalk above a certain threshold can be an indicator of system...
Electrostatic discharge (ESD) model on human body has been constructed. “The Experiment Simulation system of ESD model on human body to detonate gas” has been made. The experimental system can measure the gas concentration of explosion and electrostatic potential on human body discharge, resistance and capacitance values in different oxygen concentration and temperature. Measurement accuracy of gas...
Numerous researchers have already been involved in for designing, driving and optimizing RTWUSM, such as the control model of the whole USM system, the no-load speed, the maximum output power, the characteristic about torque to the frequency, etc. USM has been widely manufactured for civil use in Japan, military using in USA and Germany, and other uses in many European and Asia country. But fewer...
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