Insert HFSS design 和 Insert HFSS-IE design區別和用法

2016-10-11 by:CAE仿真在線來源:互聯網

首先、HFSS和HFSS-IE 是兩種不同的求解器,即算法不同,hfss采用有限元法,而hfss-ie采用積分方程法求解

其次、由于求解器不同帶來了顯著區別

HFSS求解器通過把整個求解域對象劃分成眾多的四面體網格,求解所有網格節點的電場變量。

HfSS-ie則只能求解物體表面的電流,只對表面進行三角形網格劃分求解。

原始文檔:

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電介質-絕緣體 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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