讲座名称 | Physically Derived Micro-Modeling Circuit for Signal Integrity and Radiation Problems—Its Theory, Algorithm, Passivity and Applications |

讲座时间 | 2019-01-17 16:10:00 |

讲座地点 | 西电北校区主楼III区201学术报告厅 |

讲座人 | Professor Ke-Li Wu |

讲座人介绍 | Ke-Li Wu received the B.S. and M.Eng. degrees from the Nanjing University of Science and Technology, Nanjing, China, in 1982 and 1985, respectively, and the Ph.D. degree from Laval University, Quebec, QC, Canada, in 1989. From 1989 to 1993, he was with the Communications Research Laboratory, McMaster University, as a Research Engineer and a Group Manager. In March 1993, he joined the Corporate R&D Division, COM DEV International, the largest Canadian space equipment manufacturer, where he was a Principal Member of Technical Staff. Since October 1999, he has been with The Chinese University of Hong Kong, Hong Kong, where he is a Professor and the Director of the Radiaofrequency Radiation Research Laboratory (R3L). He has authored or coauthored numerous publications in the areas of EM modeling and microwave passive components, microwave filter and antenna engineering. His current research interests include electromagnetic modeling of high speed circuits, RF and microwave passive circuits and systems, robot automatic tuning of microwave filters, MIMO antennas for wireless communications, and IoT technologies and applications. Prof. Wu is a Fellow of IEEE, a member of IEEE MTT-8 subcommittee (Filters and Passive Components) and also serves as a TPC member for many prestigious international conferences including International Microwave Symposium. He was an Associate Editor of IEEE Transactions on MTT from 2006 to 2009. He was the recipient of the 1998 COM DEV Achievement Award and Asia Pacific Microwave Conference Prize in 2008 and 2012. |

讲座内容 | This talk will present a physically derived micro-modeling circuit for signal integrity analysis of large-scale high-speed interconnection and packaging circuits and radiation problems. The derivation of the micro-circuit model starts from the Mixed Potential Integral Equation (MPIE) for EM problems, and is driven by a physically inspired equivalent circuit transformation. The derivation process inherently retains the essence of the original physical meaning in a lowpass or bandpass sense. Moreover, the derivation process does not involve any matrix operations and its computational overhead is dominated by outer products of a vector itself, which can be easily accelerated by the massive GPU acceleration technique. For time-domain simulation, the passivity of the derived circuit can be enforced by ensuring the passivity of the eigen matrices of circuit elements of resistors, inductors and capacitors, individually. The derived micro-modeling circuit is with the size of one order of magnitude less than the conventional PEEC circuit model, therefore, the time domain analysis of a signal integrity problem can be reduced by three orders of magnitude. The full-wave micro-modeling circuit can also be derived using the same circuit transformation, which can be used to reveal the working mechanism of an antenna problem. By retaining the physical essence in the micro-modeling circuit, the field couplings are modeled by mutual inductive and capacitive couplings. The radiation effect is described by the radiation resistance embedded in self- and mutual inductance while static capacitance is preserved to ensure the passivity of the circuit.
This presentation consists of three parts. Part I focus on the theory, algorithm and the suitability of parallel computation of the proposed micro-modeling technique. In part II, some practical examples of interconnection and packaging circuit are given to demonstrate the versatility, scalability, accuracy, and the simplicity of the micro-modeling method. In part III, some examples of radiation problems will be given. |

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