高速数字微波共面带线电磁互耦全波分析及模拟器

报道了采用电磁场全波分析方法模拟高速数字微波共面带线传输线电磁互耦特性。共面带线传输线电磁互耦模拟器具有很好的交互式界面，能用于高速集成电路共面带经传输线的电磁场全波分析。     

静电屏蔽晶体管GAT的结构研究

本文介绍了静电屏蔽晶体管（ＧＡＴ）的结构与器件性能，该器件具有高耐压，高速和低饱和压降等优良特性。本文对该器件的结构作了较为详细的分析研究。     

Validity of the one-body current for the calculation of form factors in the point form of relativistic quantum mechanics

Form factors are calculated in the point form of relativistic quantum mechanics for the lowest energy states of a system made of two scalar particles interacting via the exchange of a massless boson. They are compared to the exact results obtained by using solutions of the Bethe-Salpeter equation which are well known in this case (Wick-Cutkosky model). The relevance of the comparison is examined by considering other relativistic quantum-mechanics approaches where results are known or have been obtained recently. Deficiencies of the point-form approach together with the single-particle current are emphasized. They point to quite sizeable contributions of two-body currents. These ones are required to fulfil current conservation in any case and to reproduce the high momentum transfer behaviour expected from the Born amplitude. Received: 11 July 2001 / Accepted: 12 February 2002     

铝蜂窝屏蔽通风窗化学镀镍

本文报道了铝蜂窝屏蔽通风窗化学镀磁性镍层和非晶态镍层的工艺研究结果．试验与产品镀复结果证明所得镍层外观光亮、厚度均匀、与铝及铝合金基体结合力优良，具有良好的导电、导磁和耐腐蚀性能．可满足电子设备、波导及屏蔽室等方面对电磁屏蔽性能的要求     

卫星通信地球站对来自雷达干扰信号C／I的确定问题

本文主要阐述卫星通信地球站对来自雷达干扰信号载干比(C/I)的确定问题。由于雷达信号干扰对话路和电视信号干扰呈现出情况的差异,所以应根据卫星地球站用途不同分别确定所需的C/I比。     

用时域积分方程法计算介质目标的电磁散射

本文应用时域积分方程法计算介质目标的散射场，并以球体和带球帽的圆柱体为例给出了沿轴向入射平面波的电磁散射结果，与实际测试结果非常一致，值得指出的是，虽然本文给出的介质目标具有平面对称性，但该方法适用于任意形状的目标。     

橄榄体上表面波分析

本文用高频近似法和数值法相结合的混合法计算局部涂敷介质的橄榄体的电磁散射特性，分析橄榄体上表面波效应，得到许多有价值的结果。     

有耗媒质中瞬态电磁波的渐近解

本文讨论了有耗媒质中的瞬态电磁波,直接从Maxwell方程出发导出波方程,应用边界层理论求解包络的波方程,得到关于包络的渐近解。媒质的损耗使波数成为一个复数,它的虚部表示损耗,分析表明:K_1=Zσ/4,瞬态电磁波的衰减因子为exp[K_1(u-v)]=exp(-σt/2ε),衰减仅与传播时间有关,衰减使场型变模糊。     

用MEI—FD方法分析Chiral媒质的电磁散射问题

本文应用不变性测试分程和有限差分方法分析Ｃｈｉｒａｌ媒质的电磁散射问题。应用该方法时，要在所讨论的区域内建立起一组有关电场和磁场的耦合差分方程，并且要在截断边界上应用不变性测试方程建立起有关边界点系数的方程。文中给出了一些非均匀、有耗且具有电大尺寸任意横截面Ｃｈｉｒａｌ柱的雷达散射截面的数值结果     

Scattering from loaded grooves

Electromagnetic scattering from a two-dimensional groove recessed in an arbitrarily thick conducting screen is studied. The groove may be empty or loaded with a lossy material which may or may not completely fill the cavity. For the partially loaded groove, the filling material is assumed electrically dense so that the standard impedance boundary condition is applicable at the top surface of the material. Employing a full-wave analysis, integral equations are derived for the tangential components of the electric field over the aperture. It is shown that the equations are identical for both partially loaded and completely loaded (or empty) cases provided that the aperture admittance of the groove is treated as the equivalent admittance of the internal medium looking into the aperture, thus simplifying the integral equations.When the groove is completely filled by a dense material, the formulation reduces to that corresponding to a direct application of the impedance boundary condition over the aperture.