使用Ansys HFSS精准仿真射频前端芯片模组LDMOS/GaN/GaAs/IPD PA FEM Laminate Module

一、目标

读完这篇文章，您将获得

1.Ansys HFSS常用仿真设置参数

2.Ansys HFSS精准仿真射频前端芯片模组的设置

二、仿真设置

在新的project创建时，下面这些参数是必须要设置的

1.Solution Setup

a.Maximum Delta S: 0.005

b.Maximum number of passes: 10

c.Mesher: Classic

d.Order of basis functions: First order

e.Solution options: Check direct solver

f.Solution frequency: 2.5GHz (MH Band) or 1GHz (Low Band)

2.Frequency Sweep

a.Sweep type: Interpolating

b.Distribution: Linear

c.Start: 200MHz (注意: 如果输入一个低频频率，比如说1MHz,HFSS求解器会强制在这个低频处求解，此求解过程非常困难可能会导致较长的仿真时间甚至导致仿真出错。如果需要准确的DC S参数，需要确保键入0GHz。)

d.End: 12GHz (根据不同应用场景、不同需求调整)

e.Step size: 200MHz (根据不同应用场景、不同需求调整)

3.Computation space

Boundary conditions: Region with 500um oversize in each direction, set as a radiation box

4.Mesh operations

Model resolution: 2um for all objects in laminate/modules

5.Model units

um(for Die/laminate/m