电磁场 HFSS HFSS是利用我们所熟悉的windows图形用户界面的一款高性能的全波电磁场(EM)段任意3D无源器件的模拟仿真软件。它易于学习，有仿真，可视化，立体建模，自动控制的功能，使你的3D EM问题能快速而准确地求解。Ansoft HFSS使用有限元法(FEM)，自适应网格划分和高性能的图形界面，能让你在研究所有三维EM问题时得心应手。Ansoft HFSS能用于诸如S-参数，谐振频率和场等的参数计算。典型的应用包括： 封装模型－BGA，QFP，Flip－Chip PCB板建模－电源/接地板，网格面，底板 硅/砷化镓－螺旋电感线圈，变压器 EMC/EMI－屏蔽防护层，耦合，近/远场辐射 天线/移动通信－贴片天线，偶极子，喇叭，等元电话天线，四臂螺旋天线，吸收比(SAR),无限阵列，雷达横截面(RCS)及频率选择表面(FSS) 连接器－同轴电缆，SFP/XFP，底板，转换器 波导－滤波器，共鸣器，转换器，连接器 滤波器－腔体滤波器，微带传输带，介质滤波器

Overview With User Mode Linux you can create virtual Linux machines within a Linux computer and use them to safely test and debug applications, network services, and even kernels. You can try out new distributions, experiment with buggy software, and even test security. Now, for the first time, the creator and maintainer of User Mode Linux shows how to put it to work hands-on. Jeff Dike covers everything from getting started through running enterprise-class User Mode Linux servers. You'll find authoritative advice on bootup, compilation, administration, specialized configurations, and much more. Coverage includes  What User Mode Linux is, how it works, and its uses in Linux networks  Key applications, including server consolidation, development, and disaster recovery  Booting and exploration: logins, consoles, swap space, partitioned disks, and more  Copy-On-Write (COW): UML's efficient approach to storing filesystem changes  In-depth discussion of User Mode Linux networking and security  Centrally managing User Mode Linux instances, and controlling their hardware resources  Implementing clusters and other specialized configurations  Setting up User Mode Linux servers, step-by-step: small-scale and large-scale examples  The future of virtualization and User Mode Linux Whether you're a netadmin, sysadmin, teacher, student, or programmer, User Mode Linux®--the technology and this book--is indispensable

HFSS is a high-performance full-wave electromagnetic(EM) field simulator for arbitrary 3D volumetric passive device modeling that takes advantage of the familiar Microsoft Windows graphical user interface

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