General
Home / Examples / Electromagnetic Analysis [Hertz] / Example 11: TE-Mode Dielectric Resonator (3D)
A TE01δ-mode dielectric resonator is analyzed in 3D.
The resonant frequencies and the electromagnetic field distribution are solved.
Unless specified in the list below, the default conditions will be applied.
Results will vary depending on Femtet version and the PC environment.
Item |
Settings |
Analysis Space |
3D |
Model Unit |
mm |
Item |
Settings |
Solver |
Electromagnetic Analysis [Hertz] |
Analysis Type |
Resonant Analysis |
The resonant analysis is set up as follows.
Tabs |
Setting Item |
Settings |
Mesh Tab |
Element Type |
2nd-order Element |
Resonant Analysis |
Number of Modes |
3 |
Approximated Frequency |
0.0E9 [Hz] |
|
Input Power |
1.0 [W] |
A cylindrical-shaped air solid (AIR) is created. At the center, a cylindrical-shaped dielectric solid (DR) is created.
Inside the dielectric, a solid air hole (AIR) is created. In meshing,
automatic boolean operations create a dielectric resonator with a hole.
Body Number/Type |
Body Attribute Name |
Material Name |
0/Solid |
AIR |
000_Air(*) |
1/Solid |
DR |
DR_Mat |
2/Solid |
AIR |
000_Air(*) |
* Available from the material DB
The material property of DR_MAT is set up on the permittivity tab as follows.
Material Name |
Tab |
Properties |
DR_Mat |
Permittivity |
Relative Permittivity: 40 tanD: 0 |
The outer boundary, that is the outer peripheral of Air, is set as the conductor wall.
Boundary Condition Name/Topology |
Tab |
Boundary Condition Type |
Settings |
Outer Boundary Condition |
Electric |
Electric |
|
The resonant frequencies are output on the table.
The fundamental resonant frequency is 5.88 [Hz].
The field distributions for TE01δ mode are shown below. The electric field is at phase 0 deg. The magnetic field is at phase 90 deg.
