HFSS Excitations
You can assign the following excitations to an HFSS design:
| Circuit Port | Represents an HFSS 3D Layout feature implemented in HFSS. Circuit ports can be thought of as Lumped Ports assigned to a pair of edges. In the driven modal problem, the integration line for the circuit port will be the vector from the middle of the second edge to the middle of the first edge. In the driven terminal problem, the two edges are populated as terminal and reference under circuit port. For designs with only lumped ports or a combination of lumped and circuit ports, the Advanced Solution Setup, Options tab includes an option to use Enhanced low frequency accuracy. |
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. | |
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 S-parameters. For designs with only lumped ports or a combination of lumped and circuit ports, the Advanced Solution Setup, Options tab includes an option to use Enhanced low frequency accuracy. | |
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 has a voltage/current pair. Terminals are assigned automatically. | |
Floquet Ports are used exclusively with periodic structures defined by Primary and Secondary (Coupled Lattice Pair) boundaries. They contain plane waves whose frequency, phasing, and the geometry of the periodic structure determine the propagation direction. Chief examples are planar phased arrays and frequency selective surfaces when these may be idealized as infinitely large and analyzed using a unit cell. | |
Represents a propagating wave impacting the geometry. | |
Linked Field | Represents a Far Field Wave or Near Field Wave or Cable Network. You can also link a driven Modal HFSS design to SBR+. |
Represents a constant electric field across feed points. | |
Represents a constant electric current across feed points. | |
Used to define the net internal field that biases a saturated ferrite object. | |
| Multipaction Charge Region | In HFSS Multipaction analysis, charges are added to the simulation domain as excitations. |
| Multipaction DC Bias | In HFSS Multipaction analysis, sets up DC bias fields for a multipaction analysis |
| SBR+ Antenna Components | For SBR+ Solution types, use Antenna components to represent port excitations using the available Parametric Antennas, Parametric Arrays, or via Linked Source design. Individual transmit/receive antenna port couple pairs can be assign for the SBR+ simulation by using the Tx/Rx Selection dialog. |
| Circuit Elements | For driven Modal and Terminal solutions, you can convert Lumped Ports and Terminals to Circuit Elements, based on Touchstone files or linked projects. |