摘要：为了掌握partial Finger的运动学规律和动力学特性,判断其结构参数对partial Finger使用性能的影响,准确评价其真实的工作状态,根据partial Finger的机械结构,建立了基于虚拟力弹簧方法的partial Finger动力学模型,并利用Matlab软件对所建立的动力学模型进行数值求解,通过对比相同工作状态下的动力学模型以及Adams仿真结果,初步确定虚拟力弹簧的弹性系数量级取104N/mm时,动力学模型和Adams仿真所得结果一致,证明动力学模型正确,并为partial Finger机械结构的进一步设计、完善提供了理论依据。

摘要：基于Semi SJ(superjunction)结构,提出了SJ的比例可以从0～1渐变的PSJ(partialsuperjunction)高压器件的概念.通过对PSJ比导通电阻的分析,得到了PSJ高压器件比导通电阻优化设计的理论公式.计算了不同击穿电压的比导通电阻,并与二维器件模拟结果和实验结果相比较.讨论了BAL(bottomassistlayer)部分穿通因素η、p型区深度归一化参数r、p型区深宽比A以及PSJ漂移区掺杂浓度是否统一对PSJ高压器件比导通电阻的影响.其理论结果和器件模拟结果相吻合,为设计与优化PSJ高压器件提供了理论依据.PSJ结构特别适于制造工艺水平不高、很难实现大的p型区深宽比的情况,为现有工艺实现高压低导通电阻器件提供了一种新的思路.

摘要：Ultra-wideband (UWB) is one of the recent topics that received a great concern from academia and industry. However, UWB found many difficulties to be standardized due to the overlay working that made UWB an important potential interference source to many licensed and unlicensed spectrum throughout the band 3.1 to 10.6 GHz. This paper demonstrates the design of integrated triple band notched for UWB Microstrip antenna. We simulated UWB short range systems which require low power and these are built using inexpensive digital components. We proposed a compact triple band notched CPW (Co-planar Waveguide) fed Micro strip Antenna (MSA) for UWB. This band-notched antenna has rejection characteristics at 3.2 GHz (for Wi-MAX band 3.16 to 3.32 GHz), at 5.5 GHz (for WLAN 2 band—5.3 to 5.72 GHz) and at 7.9 GHz (for ITU band 7.72 GHz to 8.13 GHz). The simulation was done using IE3D simulator.

摘要：Non-intrusive measurement technology is of great interest for the electrical utilities in order to avoid an interruption in the normal operation of the supply network during diagnostics measurements and inspections. Inductively coupled electromagnetic sensing provides a possibility of non-intrusive measurements for online condition monitoring of the electrical components in a Medium Voltage (MV) distribution network. This is accomplished by employing partial Discharge (PD) activity monitoring, one of the successful methods to assess the working condition of MV components but often requires specialized equipment for carrying out the measurements. In this paper, Rogowski coil sensor is presented as a robust solution for non-intrusive measurements of PD signals. A high frequency prototype of Rogowski coil is designed in the laboratory. Step-by-step approach of constructing the sensor system is presented and performance of its components (coil head, damping component, integrator and data acquisition system) is evaluated using practical and simulated environments. Alternative Transient Program-Electromagnetic Transient Program (ATP-EMTP) is used to analyze the designed model of the Rogowski coil. Real and simulated models of the coil are used to investigate the behavior of Rogowski coil sensor at its different stages of development from a transducer coil to a complete measuring device. Both models are compared to evaluate their accuracy for PD applications. Due to simple design, flexible hardware, and low cost of Rogowski coil, it can be considered as an efficient current measuring device for integrated monitoring applications where a large number of sensors are required to develop an automated online condition monitoring system for a distribution network.

摘要：随着深亚微米工艺的广泛应用,集成电路后端设计面临诸多挑战,其中成本的降低变得越来越重要,降低芯片面积成为降低成本一重要因素。在降低芯片面积时通常会产生布线拥塞问题。拥塞不仅会导致芯片无法绕通还会导致时序和串扰问题。拥塞有多种可能原因引起,其中一种是由局部高密度标准单元引起的拥塞,这种拥塞在芯片版图实现时可以采取加partial placement blockage方式,并在不同阶段逐步降低其百分比,增加标准单元的利用率的方式来解决。实验结果表明,该方法在解决芯片拥塞问题的同时可以更好的实现时序收敛,完成芯片设计。