Q-Factor Calculation
2D/3D Field Post Processing  Loss and Q
You may calculate surface losses and dielectric losses as a postprocessing
step after a transient, frequency domain or eigenmode solver run. See
Loss
and Q Calculation for technical details.
First, you must select an H-field (e.g. from a loss-free eigenmode
calculation). Then, each material defined as PEC during the solver run
can be set to a finite conductivity. The conductivity or tangent delta
for dielectric materials have to be set before the solver run in the Material
Parameters Dialog Box.
After pressing the Calculate
button, the losses and Qs will be returned for all solids. All results
are summed up for each material and for the total model.
H-Field data
Select here the H-field from your loss-free
calculation. All available H-fields are listed, e.g., eigenmodes or H-field
monitors.
Materials and solids frame
This table contains all information about the performed
loss calculation.
Material:
In this column, all primary PEC material names, dielectric losses, as
well as some summation expressions are listed. You can modify each PEC
material or the conducting enclosure properties by double-clicking it
or by clicking the Modify button.
Beside the PEC material names, you will find the following information:
**Sum**
means the sum of losses for all materials including the dielectric losses
as well as the surface losses.
**Sum of Surface
Losses** means the sum of the surface losses occurring in all materials
primary defined as PEC, including the background and boundary (conducting
enclosure).
**Cond. Enclosure**
means only the conducting enclosure given by background material as well
as the boundaries, but only if they are primary defined as PEC.
**Volume Losses**
means the dielectric losses due to the conductivity of normal material
(not PEC), defined before the solver was started.
Solid:
This column lists all solids consisting of the above listed material.
By default, solids are hidden for better clarity. To hide/unhide solids,
select the corresponding material name and click the Hide/Unhide
button.
Conductivity:
The conductivity to be used in this postprocessing step for the
respective material. It can be set by clicking the Modify
button.
Mue:
The relative permeability to be used in this postprocessing step for the
respective material. It can be set by clicking the Modify
button.
Loss:
The loss resulting from this postprocessing step.
Q: The
Q-factor resulting from this postprocessing step. It is output only if
the corresponding loss is greater than zero.
Modify...
Opens the Modify Material Properties dialog box.
Here, you may modify settings for conductivity and mue for the selection.
This button is only active if a material name or **Cond.
Enclosure** is selected. Instead of using this button, you may
double-click the desired material name.
Modify all...
Opens the Modify Material Properties dialog box.
Here, you may make settings for conductivity and mue. These
settings are then set for all materials and the enclosure. Instead
of using this button, you may also double-click **Sum**.
Hide / Unhide
Hides or unhides the solids for the selected material
name.
Hide / Unhide All
Hides or unhides all solids.
Calculate
Executes the postprocessing power calculation. This
button will be disabled after the calculation has finished. It will be
enabled again after you modify any settings.
Specials...
Opens a Dialog
Box for special settings concerning the Q-factor calculation.
Export...
Exports the results to an ASCII file.
Close
Closes the dialog box without performing any further
action.
Help
Shows this help text.
See also
Q-Factor
Special Settings, Modify
Material Properties, Loss
and Q Calculation Overview
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