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Full-Text Articles in Engineering
Nonlinear I/O Characterization With The Time Domain Electromagnetic Simulations, Li (Lijun) Jun Jiang, Huan Huan Zhang, Ying S. Cao, Ping Li
Nonlinear I/O Characterization With The Time Domain Electromagnetic Simulations, Li (Lijun) Jun Jiang, Huan Huan Zhang, Ying S. Cao, Ping Li
Electrical and Computer Engineering Faculty Research & Creative Works
Computational electromagnetic algorithms are indispensible to today's electromagnetic compatibility. However the nonlinear I/O modeling and its hybridized simulation with electromagnetic solvers were less addressed. In this paper, we discuss two major solutions we proposed for nonlinear I/O modeling. When the details of the circuit are given known, the SPICE circuit model can be employed in the simulation. However when the detail of the nonlinear I/O is not known, which happens often, a parametric macro model is first developed to replace the I/O before the hybridized characterization. The proposed techniques are mostly suitable for time domain based computational electromagnetics systems.
Nonlinearity Of Digital I/Os And Its Behaviour Modeling, He Ming Yao, Huan Huan Zhang, Hui Chun Yu, Xing Yun Luo, Bin Li, Hua Sheng Ren, Li (Lijun) Jun Jiang
Nonlinearity Of Digital I/Os And Its Behaviour Modeling, He Ming Yao, Huan Huan Zhang, Hui Chun Yu, Xing Yun Luo, Bin Li, Hua Sheng Ren, Li (Lijun) Jun Jiang
Electrical and Computer Engineering Faculty Research & Creative Works
Due to the rising signal speed in today's integrated circuits (ICs), the digital input/output (I/O) device modeling becomes a very serious challenge. However, its nonlinearity issue was even less addressed. But for accurate EMC and EMI characterizations, the I/O nonlinearity could become a source of unexpected EMC and EMI troubles in the high-speed system. In this paper, we analyze the nonlinearity of high-speed drivers and loads under the influence of various parameters, such as the rising and falling times, data and clock duty cycle distortion (DCD), signal skew, balance of the circuit, etc. Further based on the spectrum property of …