HFSS的后处理及场计算器的使用资料.ppt

HFSS Field Calculator: Usage-Input Types The available field inputs are E: The complex vector E field data everywhere in the modeled geometry; H: The complex vector H field data everywhere in the modeled geometry; Poynting: The time-average Poynting vector computed from above as (E×H*): Jvol: Current density in a volume, computed as (σ+jωε”)E which contain both conduction and displacement current ; Jsurf: Net surface current computed as n×(H|top tetrahedra- H|bottom tetrahedra): Unlike other quantities, Jsurf can only be output on an object surface geometry. E H Jsurf Jvol Poynting E and H are Peak Phasor representation of the steady state fields. Therefore the current representation J derived from n×H or σE are also peak phasor quantities. The Poynting Vector input is a time-averaged quantity. HFSS Field Calculator: Usage-Output Types Different data output can be generated depending on selected Output column button and stack content(s): Value is used to take the “value” of a field stack entry on a specific geometry; Eval turn stack placeholder text into final numerical answer; Write and Export outputs stack data to output file formats for use outside the calculator or current project. HFSS Field Calculator: Usage-Possible Operations As long as you can perform the math using the interface, there is no restriction on the possible calculator operations available: Outputs derived can be other than “Electromagnetic” in nature; Pure Geometric operations (vector and surface cross and dot products, generation of iso-surface contours from any scalar data field imported into the geometry, etc) Thermal heating computations derived from field values combined with thermal mass characteristics and equations; Integrations to obtain summary quantities such as Quanlity factors, power dissipation or flux,etc. Post-Processor Exercise : Helix Interaction Impedance: Calculating Point Cut Plane βZ= 2π / λg λg= vp / f Single-Value Outputs Export the field solution to a uniform grid