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1、阵列天线仿真,Array Overview,Analysis Approaches,Unit Cell Analysis with Master / Slave Boundaries,Unit Cell Simplification,Master/Slave Boundaries,Unit Cell Creation,Verifying the Unit Cell Geometry,Floquet Ports Overview,Floquet Mode Visualization,Floquet Ports: Determining the Modes to Include,Modes Cal
2、culator,Floquet Port Setup,Floquet Port Setup,What if the Lattice is Triangular,Floquet Port Setup,Floquet Port Setup,Floquet Port Setup,Results Matrix Data,Results: Return Loss/Insertion Loss,Finite Array Analysis,Challenges for Large Finite Array Modeling,Domain Decomposition Overview,Solution: Fi
3、nite Array Domain Decomposition,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,Unit cell is analyzed to create mesh Unit cell mesh is then replicated to form remaining elements in th
4、e array,Mutual Coupling Data,Active Return Loss with Phase Taper,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 and-13.23 dB in the E & H Planes.,Array Pattern Scanned to 45o in the E-Plane,Expl
5、icitly Solved Patch Array vs. DDM Comparison,用CST Microwave Studio仿真阵列天线,Outline,Antenna simulation Different solvers for different antennas Antenna array simulation Small arrays Feed networks Large arrays Active element pattern Online demo,A small selection.,Antenna Simulation,Different antenna typ
6、es require different solver technologies.,Transient Solver,Frequency Solver,Integral Equation Solver,阵列天线仿真基本方法,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。 整体模型，同时激励； 同时涉及结构和激励状态的影响。,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,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
7、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,Array Feeding Networks,Large Arrays,Infinite Array,Infinite Array,FarfieldArray,Infinite Array,Active Element Pattern,Finite Array Analysis,CST Array Wizard,Summary,用HFSS仿真阵列天线,
8、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 selectio
9、n 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
10、each DSO processor.,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
11、 also deletes the array. Typically, you define master and slave boundaries as opposite sides of a cell.,简单阵列的单元电路,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.
12、Each driven Modal or driven Terminal design can contain a single array.,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
13、 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 way
14、s: click HFSSModelCreate Array, right-click 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
15、 for Number of Cells, Unit Cell Position and Lattice Vectors.,Create Array Command,If you have Visible enabled, you can see any changes. 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 cell
16、s for each row and column, respectively. For example, the following figure shows the results when the initial Lattice Vectors are swapped.t 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
