Example11 TE-Mode Dielectric Resonator(3D)

General

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.

Analysis Space

Item	Settings
Analysis Space	3D
Model unit	mm

Analysis Conditions

Item	Settings
Solver	Electromagnetic Analysis [Hertz]
Analysis Type	Resonant analysis
Options	Select “Ignore the influence of face/edge electrode thickness” *

* This is the default setting. There are no face electrodes with this model. Therefore it is irrelevant to select it or not.

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}

Model

A holed dielectric cylinder (DR) is placed in the air cylinder (AIR).
The hole is another air cylinder (AIE). The boolean operation will be performed during the meshing automatically.
Therefore, the model will be recognized as a holed cylinder.

Body Attributes and Materials

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

Boundary Conditions

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

Results

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.

See other Electromagnetic Analysis examples.