阵列天线设计与仿真

Create Array Command

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To Define Lattice Vector directions for A and B Vectors, specify the master boundary. To define the array size, for the A and B vectors, specify the number of cells for each row and column, respectively. For example, the following figure shows the results when the initial Lattice Vectors are swapped.t
复杂阵列设置


However, you can arrange master and slave boundaries to create an offset array. In such cases, you create both a master and a slave boundary for corresponding sections of a cell side, and assign master and slave to create offset alignment. With all boundaries defined in this manner, the array can be offset.
Create Array Command


The Create Array command is enabled for Modal and Driven Terminal problems after you have assigned master and slave boundaries to your unit cell model. You can access the command in three ways: click HFSS>Model>Create Array, rightclick on the Model icon in the Project tree and select Create Array from the shortcut menu, or select the unit cell in the modeler window, and select Create Array from the short-cut menu. This displays the Regular Planar Array dialog where you specify parameters for Number of Cells, Unit Cell Position and Lattice Vectors.
Array Pattern Scanned to 45o in the E-Plane
Explicitly Solved Patch Array vs. DDM Comparison
用CST Microwave Studio仿真阵列天线
Outline

Antenna simulation

计算结果
计算结果
计算结果
计算结果
设置后处理
计算结果
直接计算方式

模型、边界 条件和场观 察器等与前 面的设置相 同。
求解设置
计算结果
计算结果
Antenna Arrays
Small Arrays
Distributed Computing (DC)
Multiple Element Excitation

Unit cell is analyzed to create mesh Unit cell mesh is then replicated to form remaining elements in the array
Mutual Coupling Data
Active Return Loss with Phase Taper
Array Feeding Networks
Large Arrays
Infinite Array
Infinite Array
FarfieldArray
Infinite Array
Active Element Pattern
Finite Array Analysis
CST Array Wizard
Creating a Unit Cell for an Array


The unit cell can be rectangular, parallelogram or hexagonal. You must define appropriate master and slave boundaries, as well as other boundaries required for the model. Deleting a master or slave boundary that is referenced by an existing array also deletes the array. Typically, you define master and slave boundaries as opposite sides of a cell.
Results: Return Loss/Insertion Loss
Finite Array Analysis
Challenges for Large Finite Array Modeling
Domain Decomposition Overview
Solution: Finite Array Domain Decomposition

To create an irregular array, select the Active Cells tab, select the radio button for Mouse makes cell as Padding
Create Array Command


Once you have specified the parameters, the Array object appears in the Project tree under the Model. Only one Array is permitted for a model. The Create Array command is disabled if an array is defined. By selecting the Array icon in the Project tree, you right-click for the short cut menu.
Modes Calculator
Floquet Port Setup
Floquet Port Setup
What if the Lattice is Triangular
Floquet Port Setup
Floquet Port Setup
Floquet Port Setup
Results – Matrix Data

由单个天线计算天线阵；

未考虑天线之间的耦合。

由整体模型单独激励计算辐射场；

计算涉及天线结构之间的影响。
同时涉及结构和激励状态的影响。

整体模型，同时激励；

计算模型

单个天线的设置
求解设置
求解设置
天线阵设置
计算结果
单独计算用后处理叠加
求解设置

频率设置与前面相同
求解设置
计算结果
Antenna Simulation

Different antenna types require different solver technologies.
Transient Solver
Frequency Solver
Integral Equation Solver
阵列天线仿真基本方法
阵列天线仿真
阵列天线仿真
电子科技大学 贾宝富 博士
Array Overview
Analysis Approaches
Unit Cell Analysis with Master / Slave Boundaries
Unit Cell Simplification
Master/Slave Boundaries
Summary
用HFSS仿真阵列天线
序言

HFSS 计算实 际的阵列天线 是基于阵列天 线中的一个单 元。对于模式 驱动和端口驱 动的设计，使 用分布仿真过 程。使你能够 快速定义、显 示和仿真阵列 天线设计。
设计步骤


1. Draw the unit cell, containing all appropriate boundaries and source definitions. 2. Create the antenna array, including name, dimensions, master and slave boundaries where needed for conformal meshing, and selection of row and column master/slave pairs for implicit definition of lattice propagation vectors. Designate which cells are active, passive, and padding. 3. Setup the distributed processor pool. Designs with arrays require HPC licenses. 4. Provide a memory statistic for the amount of RAM guaranteed on each DSO processor.
Unit Cell Creation
Verifying the Unit Cell Geometry
Floquet Ports Overview
Floquet Mode Visualization
Floquet Ports: Determining the Modes to Include
Embedded Element Patterns
Array Pattern in the E-Plane

Array has no phase shift taper so thebeam is pointed toward boresite Sidelobe Levels are -10.86dB and13.23 dB in the E & H Planes.
Different solvers for different antennas Small arrays Feed networks Large arrays Active element pattern

Antenna array simulation


Online demo
A small selection...
Finite Array DDM Tool Advantages
How It Works!!!
How It Works!!!
How It Works!!!
How It Works!!!
Probe Fed Patch Array with Feed Network
Finite Phased Array Setup Using DDM
简单阵列的单元电路



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In such cases, with master and slave boundaries on opposite sides, the array sides align. In making source definitions for unit cell for the unit cell, you cannot assign a Floquet port. • Each driven Modal or driven Terminal design can contain a single array.