Single-Line Transmission Line Ports

When configuring HFSS ports as single-line transmission ports, the edge selections must be a continuous, co-linear set of segments.

Single Line Transmission Port Examples

To convert between a lumped-gap and a wave port, toggle the HFSS Type Attribute in the HFSS 3D Layout Properties. The 3D view are updated automatically. Additional properties that can be set include:

General properties

Reference -select geometry/layer for vertical constraint
Impedance -if Z0 cannot be determined from port solution
Post-processor –renomalization and deembedding

Gap

Orientation (read only)

Wave

Orientation (read only)
Horizontal Extent Factor –if applicable, sizing parameter for vertical wave ports
PEC Launch Width –dimension for port-geometry thickness

The following pre-simulation validation checks apply:

Port geometry may not intersect other port geometry
Port geometry may not intersect layout geometry
Wave ports may not contain “floating” terminal geometry