Example9 Coplanar Waveguide with Bend

Item	Settings
Solvers	Electromagnetic Analysis [Hertz]
Analysis Type	Harmonic 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.

Mesh tab, Harmonic analysis tab and Open boundary tab are 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: 8×10^9[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	Frequency	Minimum: 7.2×10^9[Hz] Maximum: 8.2×10^9[Hz]
	Sweep Type	Select Linear step Division number: 10
	Sweep Setting	Select Discrete sweep
Open boundary	Type	Absorbing boundary
Open boundary	Order of Absorbing Boundary	1st degree

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

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

The outer boundary condition is “Electric wall”.

* Available from the Material DB

Boundary Condition Name/Topology	Tab	Boundary Condition Type	Settings
PORT1/Face	Electric	I/O Port	Reference Impedance: Select “Specify” and enter 50 ohms. Number of Modes Number of precalculated modes: 5 Number of modes used in the actual analysis: 1 Select modes: none
PORT2/Face	Electric	I/O Port	Same as above.
Outer Boundary Condition	Electric	Electric wall