HFSS Transient Excitations

Wave Port

Represents the external surface through which a signal enters or exits the geometry. It is effectively a semi-infinite waveguide attached to the model. This waveguide has the same cross-section and material properties as the port. Wave ports are placed on this interface to provide a means to link the model device to the external world.

Lumped Port

Represents an internal surface through which a signal enters or exits the device. It is effectively a lumped element for exciting the device and measuring the S-parameters.

Terminal

A terminal is defined by one or more conductors in contact with the port. HFSS treats microwave structures as a black box that may have one or more terminals, each of which contains a voltage/current pair. Terminals are assigned either manually or automatically.

Plane Wave

Represents a wave that propagates in one direction and is uniform in the directions perpendicular to that of its propagation.

Voltage Source

Represents a constant electric field across feed points.

Current Source

Represents a constant electric current across feed points.