Insert HFSS design 和 Insert HFSS-IE design区别和用法

2016-10-11 by:CAE仿真在线来源:互联网

首先、HFSS和HFSS-IE 是两种不同的求解器,即算法不同,hfss采用有限元法,而hfss-ie采用积分方程法求解

其次、由于求解器不同带来了显著区别

HFSS求解器通过把整个求解域对象划分成众多的四面体网格,求解所有网格节点的电场变量。

HfSS-ie则只能求解物体表面的电流,只对表面进行三角形网格划分求解。

原始文档:

HFSS-IE is a fullwave Integral Equation solver that calculates the “currents” on the surfaces of the objects in the model – both finite conducting and lossy dielectric objects are allowed. HFSS-IE is designed for large open problems. Application areas include:

• Radar cross Section (RCS)

• Antenna placement (for example, antenna on a vehicle)

• Stand alone antennas

• Coupling. EMI/EMC

HFSS-IE features:

• Works from within the standard HFSS desktop, sharing the GUI and the same 3D modeler and reporting features.

• Naturally open – no air volume or ABC needed

• Support for infinite ground plane

• Supports ground planes apertures

• Supports lumped gap and incident wave excitations.

• Supports discrete and/or interpolating frequency sweeps

• Near and far field calculations

• For larger models, HFSS-IE uses automated advanced matrix based compression techniques.

• Data link from HFSS available, which means that you divide appropriate models based on each solver’s advantages.

How HFSS-IE is different than HFSS

HFSS uses the finite element method (FEM) to solve for the electromagnetic fields in the solution region. It meshes over the entire solution volume and solves for the electric field throughout that volume.

HFSS-IE uses an integral equation (sometimes called method of moments = MoM) and solves for the currents on surfaces of objects. It creates a triangular surface mesh on all objects - it solves for the currents or equivalent currents on conducting and dielectric电介质-绝缘体 objects. The IE technique is by default an "open model" technique so no ABCs are needed. It can handle closed spaces, but that is typically not where it will be used. In addition HFSS-IE includes a true infinite ground plane.

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