HFSS Usage Records

First, basic settings

1. Tools \ Options, various basic settings

1.1 Tools \ Options \ HFSS options-> Duplicate boundaries/mesh operations with geometry, copied collection graphics, default with same boundary attribute

1.2 Tools \ Options \ Modeler options-> (Operations) auto cover closed ploylines, automatically filled with closed polylines (closed lines as a polygon); (drawing) Edi Te properties of new primitives, when you add an XX, edit the attributes

1.3 Tools \ Options \ Modeler options-> (Project Options) when create a new project, insert a design of type HFSS. When you create a new project, insert the design of the HFSS type.

1.4 Tools \ Options \ General options-> (default units) system defaults unit settings, such as mm or mil

2, modelers \ Units, currently used units settings

3, HFSS \ Solution Type, the current design of the type, there are the following four kinds:

① [Driven Mode] is for calculating the mode-based s-parameters of passive, high-frequency structures such as MICR Ostrips, waveguides, and transmission lines which is "driven" by a source, and for computing incident plane Wave Scatteri Ng. The S-matrix solution is expressed in terms of the incident and reflected powers of waveguide modes.

②[driven Terminal] is for calculating the terminal-based s-parameters of passive, high-frequency structures with Multi-conductor Transmission line ports. This solution type results in a terminal-based description in terms of voltages and currents.

③[Eigen Mode] is for calculating the eigenmodes, or resonances, of a structure. The Eigenmode solver finds the resonant frequencies of the structure and the fields at those resonant frequencies. Eigenmode designs cannot contain design parameters that depend on frequency.

④[Transient] is for calculating problems in the time domain. It employs a time-domain "transient" solver. Typically applications include (the mode appears from HFSS 13)

Second, drawing

1. Designated materials

Quick tool line, vacuum word for selection material, click Select. Select an existing material or add a new one.

1. Solid, solid or solids

If you are drawing a box, there are two ways to do it:

①draw line,type for Rectangle, specify with and height. If it is an emulated transmission line, this is the recommended way.

②draw Box.

2, Sheet, two-dimensional drawings or slices

Can be understood as a piece of paper, we do not know its thickness; for the time being, we do not know how the system treats two-dimensional graphics:

①draw Line,type is rectangle, specify with or height only.

②draw Rectangle.

3. Setting variables

When we define a stereoscopic graphic size, we can use variables. For example, the length of the box above, we can set to L, then we give the L value.

4. Select Face or Object

① in the no Command activation state, click the right mouse button. Select object or select Face can be quickly selected in the pop-up menu.

②edit/select/select Object or Select face.

Tips: You can use Edit/select/select by name to choose Exactly.

5. Editing graphics

This includes the move,rotate,mirror,duplicate, etc., the way to bring up the menu is mainly:

①edit/arrange or Edit/duplicate

② Select an object, right-click on its name and select Edit/arrange or edit/duplicate in the pop-up menu.

Three, simulation settings

1, HFSS \ excitations \ Assign \ Wave port or lumped port

is to give a face to assign to become wave port, so, before the operation to select a face, in addition, the previous selection HFSS design solution type, the port type is also different.

Questions about the difference between wave port and lumped port:

With lump port=> the excitation isApplied at a Point/cell, asa voltage or current. With Wave-port=> the excitation isSo-called eigen-wave, such asThe Quasi-tem wave supported by a microstrip line. It applies over a cross-sectional area. Voltage isScalar, wave isVector by nature, hence there is substantial difference between the. So use waveport whenever possible, because"simulation of wave phenomenon"  isWhat HFSS isDesigned for. and compare with the"correct"measurement whenever possible (i.e. measure"Wave", not simply"Voltage"). Why lumped Port isThere? It isEasy to applied and people found the good/reasonable results can be obtained. Why?ifThe frequency isLow enough or the excitation isApplied at sufficiently small area and then the"Wave"Can is described by some"Voltage"Or" Current", which must be"measured"/"Calculated"/de-embedded/etcinchThe correct manner.ifThe excitation can applied on some locally uniform region=>Waveport,ifGeometry/material discontinuities is near/closer to the point of excitation=>lumped Port might is the only-to-be.

2. HFSS \ Analysis Setup \ ADD Solution Setup

Add a simulation. There are three main parameters set in general:

①[solution Frequency] If the maximum bandwidth of the system is to be taken, the mesh will be cut the most, the simulation time longer, but the simulation is also the most standard.

②[maximum number of Passes] is the Maximum number of mesh refinement cycles for HFSS to perform.

The Options tab also has the parameters:

①[minimum converged Passes]

②[enable iterative solver]the iterative Solver significantly reduces memory usage, and it can also provide a savings in th E solution time for large simulations.

3. HFSS \ Analysis Setup \ Add Frequency Sweep

Add a frequency sweep, note that it was added on the basis of the previous simulation. It's impossible to do it alone.

4, HFSS \ Validation Check

Here is a check whether the full settings have been made and whether the analyze can be executed. If you can, then do hfss\ Analyze all!

Iv. generation of reports

1, HFSS \ Results \ Solution Data

Reports that generate simulation basics include: profile (information such as simulation time-consuming, computer-resource-intensive), Convergence (how many iterations to get convergence), Matrixs (), mesh statistics (how much mesh is cut). Computer different Here The value difference is quite big, my broken computer incredibly can run quickly, let me very surprised.

2, HFSS \ Results \ Create Terminal solution Data report \ Rectangular Plot

s parameter of the report, anyway in the pop-up box select the parameters you want, then the new report or add trace is good, directly will have the data you want to be drawn to the diagram. You can also choose the export matrix data (exported simulation) or equivalent circuit export (equivalent circuit export, PSpice.lib or HSPICE.SP).

3, HFSS \ fields \ fields \ E \ mag_e

View the field overlay map. You need to first select the plane you want to observe. The meaning of the specific model.

Mag E electric field mould v/mmag H magnetic field mode Amps/Mmag Jvol Body current density mode Amps/M2mag Jsurf Surface current density mode Amps/Mcomplex MagE electric field complex modulus V/Mcomplex MagH magnetic field complex modulus Amps/Mcomplex Mag jvol mass current density complex modulus Amps/Complex mode Amps of M2complex Mag jsurf surface current density/mvector E electric field V/mvector H magnetic field Amps/mvector Jvol Body Current density J (x, Y, z) Amps/m2vector Jsurf Surface Current density J (x, Y, z) Amps/mvector Real poynting slope Pavilion vector, defined as E x H* w/m2local SAR Specific absorption rate W/kgaverage SAR Average specific absorption rate W/kg

4.

HFSS Usage Records