HFSS-IE反射面仿真
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2013/11/28
反射面天线设计新方法
向胜昭 ANSYS高级应用工程师
天线设计指标
①天线扫描方式
②天线工作频率 ③天线增益 ④天线尺寸限制 ⑤天线重量要求
决定天 线采用 什么样 的形式
⑥天线波束覆盖
⑦天线副瓣电平
⑧天线极化形式
⑨天线驻波
……
反射 面？
具体 实现
反射面天线应用分类
反射面天线解决方案
• “高增益、低副瓣、相控阵”反射面天线 • 难点：
∫∫∫ technique
• Automated results with accuracy
– Effective utilization of automated adaptive meshing technique from HFSS
– Employs Adaptive Cross Approximation (ACA) technique for larger simulation
Could reduce FF calc. time by only requesting 2D cuts.
60GHz; 1meter (200λ) diameter reflector; Crossed dipole source and struts
3. 反射面天线HFSS-IE仿真
• Simulated three reflector electrical diameters:
2 meter (40λ)
1. 反射面天线HFSS仿真
6 hours 53 minutes to complete adaptive pass 1
Fell back to the direct solver! 94GB of RAM
2. HPC仿真反射面天线
2 meter (40λ)
3
2013/11/28
2 meter (40λ)
2. HPC仿真反射面天线
ANSYS Test Computers Used
1) 4 cores, 8GB (sjc01)
2) 4 cores, 8GB (sjc02) 3) 4 cores, 8GB (sjc03) 4) 4 cores, 8GB (sjc05) 5) 4 cores, 8GB (sjc11)
场到场链接 (Data Link)
区域分解法
(Domain 曲面共形网格剖 Decomposition 分（Curvilinear Method)
混合阶网格剖分
Meshing）
(Mixed Element Order)
HFIE （高频积 分方程法）
…
高阶有限元＋ 迭代法矩阵求解器
High Accuracy
HPC的使用
2
1
3
4 5
7
6
8
2. HPC仿真反射面天线
•6GHz solve frequency •2 meter dish (40λ) •11,280 cubic λ volume •CP circular horn feed
•Ran two cases:
Seven mixed machines, 28 cores, 72GB
CP source Plotting currents
Using 22/27 domains
No core using more than 2GB
Total memory use is 1/3 of single machine
2. HPC仿真反射面天线
(Pass 2)
25 minutes to complete adaptive pass 2
15GHz; 1meter (50λ) diameter reflector; Crossed dipole source and struts
6
2013/11/28
3. 反射面天线HFSS-IE仿真
100λ Diameter--- 0.25λ starting Mesh
342,731 triangles 2 passes 24.7GB RAM 13 hr 50 min solve 2 hr FF calc. 16 hr TOTAL run time
Single Cell-ADK Unit Cell-Floquet
Finite Array-HPC……
Dish antenna
High complexity ------ Variety of methods
System-cosimulation
High complexity
• 解决策略：
– HFSS – HPC (DDM – domain decomposition method) – HFSS-IE – HFSS + HFSS-IE (Datalink) – FE-BI (Hybrid Method) – PO (Might as well add HFSS-IE)
– Electrically Large – High Accuracy (Low sidelobe, shelter) – High complexity(Active match, complicated shelter)
1
2013/11/28
Electrically Large
PO混合…… 混合全波分析
1. 反射面天线的HFSS仿真
2 meter (40λ)
2
2013/11/28
HFSS
全三 波维 仿高 真频 工结 具构
精确可靠，快速易用
• 成熟可靠的有限元电磁场求解技术 （适应性好，编程难度大）
• 自动化的共形网格生成，保持结构的细节特性 • 独有的自适应网格剖分 • 自动迭代给出满足精度要求的结果
50λ diameter dish
7
2013/11/28
3. 反射面天线HFSS-IE仿真
Reflector with Struts – WITH Adaptive Meshing
• Turned ON adaptive meshing for just 2 total passes
λ/20 λ/12 λ/10 λ/8 λ/4
3. 反射面天线HFSS-IE仿真
Cavity backed dipole source
Parabolic dish parameterized such that the focus is always at the origin
Phase center of the source is set at the focus.
dB(Dir Total)
Ansoft LLC 20 .00
10 .00
0.00
-10.00
-20.00
• Highly scalable to large numbers of processors
• Multi-processor nodes can be utilized
HPC distributes mesh subdomains to networked processors and memory
– Implemented as a new design type in the HFSS desktop
• Utilization of results from HFSS as a linked source
– Link can include effects of backwards scattering to the source geometry
30GHz; 1meter (100λ) diameter reflector; Crossed dipole source and struts
3. 反射面天线HFSS-IE仿真
200λ Diameter--- 0.25λ starting Mesh
947,548 triangles 1 pass 71.3 GB RAM 26 hr 49 min solve 10 hr FF calc. 37 hr TOTAL run time
CP source Plotting currents
Using 27/27 domains
No core using more than 2GB
3. 反射面天线的HFSS-IE仿真
5
2013/11/28
HFSS-IE
• IE, what is it?
– A 3D Method of Moments (MoM) Integral Equation
Elapsed time here does not include pattern calculation time. Requested only 2D cuts for this model which reduced FF calc. time < 2 hours (not shown in profile).
36:53
*Just 2D cuts at Phi=0, 45, 90 with 0.125 deg theta resolution **3D and 2D sphere calculations
3. 反射面天线HFSS-IE仿真
Surface currents when the source is not at the focus of the parabola. Note the current disruptions at the struts.
4.反射面天线： HFSS-IE&HFSS--Datalink
4. 反射面天线 HFSS-IE&HFSS--Datalink
• 15个脊波导角锥馈源 • 偏馈反射面：下边长6395mm 上边长
4428mm，高 4393mm • 仿真频率: 2GHz 到 4GHz
4. 反射面天线 HFSS-IE&HFSS--Datalink
4
2013/11/28
2. HPC仿真反射面天线
Case II: Mixed Machines DDM
Split into 22 domains on the first pass 5 domains not used yet
2. HPC仿真反射面天线
(Pass 1)
< 20 minutes to complete adaptive pass 1 (21x faster than single machine)
HFSS-IE不用设置 辐射边界
3. 反射面天线HFSS-IE仿真
50λ Diameter--- 0.25λ starting Mesh
96,778 triangles 2 passes 6.06GB RAM 1 hr 23 min solve 37 min FF calc. 2 hr TOTAL run time
Assembled list of standard workstations to be used for HPC
6) 4 cores, 16GB (sjc09)
7) 4 cores, 16GB (falcon)
Total of 7 computers.
28 cores, 72GB of RAM.
Adaptive Passes
RAM
Solve Time (hh:mm)
FF Calc. Time TOTAL Run
(hh:mm)
Time
(hh:mm)
50λ
2
6.1GB
01:23
00:37**
02:00
100λ
2
24.7GB
13:43
02:00*
15:43
200λ
1
71.3GB
26:49
10:04**
PEC support struts, parameterized to change along with the parabolic dish
3. 反射面天线HFSS-IE仿真
HFSS-IE可以使用的 激励有三种:
Lumped port terminal incident wave
HFSS
初始网格
自适应加密后的网格
1. 反射面天线HFSS仿真
6GHz solve frequency 2 meter dish (40λ) 11,280 cubic λ volume CP circular horn feed
Ran two cases: Single 128GB, 8 core
HPC for HFSS
•百度文库Distributes mesh subdomains to network of processors
• Distributed memory parallel technique
• Significantly increases simulation capacity – 64-bit meshing
反射面天线设计新方法
向胜昭 ANSYS高级应用工程师
天线设计指标
①天线扫描方式
②天线工作频率 ③天线增益 ④天线尺寸限制 ⑤天线重量要求
决定天 线采用 什么样 的形式
⑥天线波束覆盖
⑦天线副瓣电平
⑧天线极化形式
⑨天线驻波
……
反射 面？
具体 实现
反射面天线应用分类
反射面天线解决方案
• “高增益、低副瓣、相控阵”反射面天线 • 难点：
∫∫∫ technique
• Automated results with accuracy
– Effective utilization of automated adaptive meshing technique from HFSS
– Employs Adaptive Cross Approximation (ACA) technique for larger simulation
Could reduce FF calc. time by only requesting 2D cuts.
60GHz; 1meter (200λ) diameter reflector; Crossed dipole source and struts
3. 反射面天线HFSS-IE仿真
• Simulated three reflector electrical diameters:
2 meter (40λ)
1. 反射面天线HFSS仿真
6 hours 53 minutes to complete adaptive pass 1
Fell back to the direct solver! 94GB of RAM
2. HPC仿真反射面天线
2 meter (40λ)
3
2013/11/28
2 meter (40λ)
2. HPC仿真反射面天线
ANSYS Test Computers Used
1) 4 cores, 8GB (sjc01)
2) 4 cores, 8GB (sjc02) 3) 4 cores, 8GB (sjc03) 4) 4 cores, 8GB (sjc05) 5) 4 cores, 8GB (sjc11)
场到场链接 (Data Link)
区域分解法
(Domain 曲面共形网格剖 Decomposition 分（Curvilinear Method)
混合阶网格剖分
Meshing）
(Mixed Element Order)
HFIE （高频积 分方程法）
…
高阶有限元＋ 迭代法矩阵求解器
High Accuracy
HPC的使用
2
1
3
4 5
7
6
8
2. HPC仿真反射面天线
•6GHz solve frequency •2 meter dish (40λ) •11,280 cubic λ volume •CP circular horn feed
•Ran two cases:
Seven mixed machines, 28 cores, 72GB
CP source Plotting currents
Using 22/27 domains
No core using more than 2GB
Total memory use is 1/3 of single machine
2. HPC仿真反射面天线
(Pass 2)
25 minutes to complete adaptive pass 2
15GHz; 1meter (50λ) diameter reflector; Crossed dipole source and struts
6
2013/11/28
3. 反射面天线HFSS-IE仿真
100λ Diameter--- 0.25λ starting Mesh
342,731 triangles 2 passes 24.7GB RAM 13 hr 50 min solve 2 hr FF calc. 16 hr TOTAL run time
Single Cell-ADK Unit Cell-Floquet
Finite Array-HPC……
Dish antenna
High complexity ------ Variety of methods
System-cosimulation
High complexity
• 解决策略：
– HFSS – HPC (DDM – domain decomposition method) – HFSS-IE – HFSS + HFSS-IE (Datalink) – FE-BI (Hybrid Method) – PO (Might as well add HFSS-IE)
– Electrically Large – High Accuracy (Low sidelobe, shelter) – High complexity(Active match, complicated shelter)
1
2013/11/28
Electrically Large
PO混合…… 混合全波分析
1. 反射面天线的HFSS仿真
2 meter (40λ)
2
2013/11/28
HFSS
全三 波维 仿高 真频 工结 具构
精确可靠，快速易用
• 成熟可靠的有限元电磁场求解技术 （适应性好，编程难度大）
• 自动化的共形网格生成，保持结构的细节特性 • 独有的自适应网格剖分 • 自动迭代给出满足精度要求的结果
50λ diameter dish
7
2013/11/28
3. 反射面天线HFSS-IE仿真
Reflector with Struts – WITH Adaptive Meshing
• Turned ON adaptive meshing for just 2 total passes
λ/20 λ/12 λ/10 λ/8 λ/4
3. 反射面天线HFSS-IE仿真
Cavity backed dipole source
Parabolic dish parameterized such that the focus is always at the origin
Phase center of the source is set at the focus.
dB(Dir Total)
Ansoft LLC 20 .00
10 .00
0.00
-10.00
-20.00
• Highly scalable to large numbers of processors
• Multi-processor nodes can be utilized
HPC distributes mesh subdomains to networked processors and memory
– Implemented as a new design type in the HFSS desktop
• Utilization of results from HFSS as a linked source
– Link can include effects of backwards scattering to the source geometry
30GHz; 1meter (100λ) diameter reflector; Crossed dipole source and struts
3. 反射面天线HFSS-IE仿真
200λ Diameter--- 0.25λ starting Mesh
947,548 triangles 1 pass 71.3 GB RAM 26 hr 49 min solve 10 hr FF calc. 37 hr TOTAL run time
CP source Plotting currents
Using 27/27 domains
No core using more than 2GB
3. 反射面天线的HFSS-IE仿真
5
2013/11/28
HFSS-IE
• IE, what is it?
– A 3D Method of Moments (MoM) Integral Equation
Elapsed time here does not include pattern calculation time. Requested only 2D cuts for this model which reduced FF calc. time < 2 hours (not shown in profile).
36:53
*Just 2D cuts at Phi=0, 45, 90 with 0.125 deg theta resolution **3D and 2D sphere calculations
3. 反射面天线HFSS-IE仿真
Surface currents when the source is not at the focus of the parabola. Note the current disruptions at the struts.
4.反射面天线： HFSS-IE&HFSS--Datalink
4. 反射面天线 HFSS-IE&HFSS--Datalink
• 15个脊波导角锥馈源 • 偏馈反射面：下边长6395mm 上边长
4428mm，高 4393mm • 仿真频率: 2GHz 到 4GHz
4. 反射面天线 HFSS-IE&HFSS--Datalink
4
2013/11/28
2. HPC仿真反射面天线
Case II: Mixed Machines DDM
Split into 22 domains on the first pass 5 domains not used yet
2. HPC仿真反射面天线
(Pass 1)
< 20 minutes to complete adaptive pass 1 (21x faster than single machine)
HFSS-IE不用设置 辐射边界
3. 反射面天线HFSS-IE仿真
50λ Diameter--- 0.25λ starting Mesh
96,778 triangles 2 passes 6.06GB RAM 1 hr 23 min solve 37 min FF calc. 2 hr TOTAL run time
Assembled list of standard workstations to be used for HPC
6) 4 cores, 16GB (sjc09)
7) 4 cores, 16GB (falcon)
Total of 7 computers.
28 cores, 72GB of RAM.
Adaptive Passes
RAM
Solve Time (hh:mm)
FF Calc. Time TOTAL Run
(hh:mm)
Time
(hh:mm)
50λ
2
6.1GB
01:23
00:37**
02:00
100λ
2
24.7GB
13:43
02:00*
15:43
200λ
1
71.3GB
26:49
10:04**
PEC support struts, parameterized to change along with the parabolic dish
3. 反射面天线HFSS-IE仿真
HFSS-IE可以使用的 激励有三种:
Lumped port terminal incident wave
HFSS
初始网格
自适应加密后的网格
1. 反射面天线HFSS仿真
6GHz solve frequency 2 meter dish (40λ) 11,280 cubic λ volume CP circular horn feed
Ran two cases: Single 128GB, 8 core
HPC for HFSS
•百度文库Distributes mesh subdomains to network of processors
• Distributed memory parallel technique
• Significantly increases simulation capacity – 64-bit meshing