RF MODULE

NAME EXPRESSION EXPRESSION
T_blood 37[degC] Blood temperature
P_in 10[W] Input microwave power
nu 2.45[GHz] Microwave frequency
eps_diel 2.03 Relative permittivity, dielectric
eps_cat 2.6 Relative permittivity, catheter
eps_liver 43.03 Relative permittivity, liver
sig_liver 1.69[S/m] Electric conductivity
GEOMETRY MODELING
1 Create two rectangles. Select the menu item Draw>Specify Objects>Rectangle, then
enter the following settings; when done with each one, click OK.
WIDTH HEIGHT BASE CORNER R BASE CORNER Z
0.595e-3 0.01 0 0
29.405e-3 0.08 0.595e-3 0
2 Click the Zoom Extents button on the Main toolbar.
3 From the Draw menu open the Create Composite Object dialog box. Clear the Keep
interior boundaries check box. In the Object selection box select both rectangles, then
click the Union button. Click OK.
4 Following the procedure in Step 1, specify two more rectangles with the following
properties:
WIDTH HEIGHT BASE CORNER R BASE CORNER Z
0.125e-3 1e-3 0.47e-3 0.0155
0.335e-3 0.0699 0.135e-3 0.0101
5 Add a line to the geometry. Select the menu item Draw>Specify Objects>Line. In the
r edit field enter the coordinates 0 8.95e-4 8.95e-4, and in the z edit field enter
the coordinates 9.5e-3 0.01 0.08. Click OK.
PHYSICS SETTINGS
Subdomain Settings—Bioheat Equation
1 From the Multiphysics menu select 1 Bioheat Equation (htbh).
2 From the Physics menu select Subdomain Settings.
3 Select Subdomains 2, 3, and 4, then clear the Active in this domain check box.
138 | CHAPTER 3: RF AND MICROWAVE MODELS