Home / Examples / Electromagnetic Analysis [Hertz] / Example 9: Coplanar Waveguide with Bend

Example 9: Coplanar Waveguide with Bend

 

General

 

Analysis Space

Item

Settings

Analysis Space

3D

Model Unit

mm

 

Analysis Conditions

Item

Settings

Solver

Electromagnetic Analysis [Hertz]

Analysis Type

Harmonic Analysis

 

 

The harmonic analysis is set as follows.

Tab

Setting Item

Settings

Mesh Tab

Element type

2nd-order element

Multigrid/Adaptive Mesh Method

Select "Use the adaptive mesh method".

Frequency-Dependent Meshing

Reference frequency: 8x109[Hz]

Select "The conductor bodies thicker than the skin depth constitute the boundary condition."

 

As Hot and GROUND are thicker than the skin depth,

the surfaces are applied with the boundary condition having some loss.

Harmonic analysis

Sweep Type

Select [Linear Step by Division Number]

Sweep Setting

Minimum: 7.2×109[Hz]

Maximum: 8.2x109[Hz]

Division: 10

Sweep Setting

Select Discrete sweep

Input

1.0[W]

 

* Fast sweep is avoided for higher accuracy. The number of frequencies is relatively low, so the calculation will not take long.

 

 

Model

Coplanar waveguide is formed on a alumina substrate. Electrodes of waveguide are solid bodies.

The outer boundary condition is set to the electric wall.

 

 

Body Attributes and Materials

Body Number/Type

Body Attribute Name

Material Name

4/Solid

AIR

000_Air(*)

5/Solid

SUB

001_Alumina

13/Solid

HOT

003_Ag *

24/Solid

GROUND

003_Ag *

26/Solid

GROUND

003_Ag *

* Available from the material DB

 

Boundary Conditions

Boundary Condition Name/Topology

Tab

Boundary Condition Type

Settings

PORT1/Face

Electric

Port

Reference Impedance: Select [Specify]

Enter 50[Ω]
Number of Modes:

Number of Precalculated Modes: 5

Number of Modes Used in the Actual 3D Analysis: 1

  Select Modes: None

PORT2/Face

Electric

Port

Same as Above.

Outer Boundary Condition

Electric

Electric Wall

 

 

Results