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HFSS15: Assigning Excitations in HFSS-IE
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Excitations in HFSS-IE are used to specify the sources of electromagnetic fields and charges, currents, or voltages on objects or surfaces in the design. You can assign the following types of excitation in an HFSS-IE design:
Lumped Port | Represents an internal surface through which a signal enters or exits the geometry. |
Terminal | Represents a terminal. You can assign terminals manually or automatically. |
Plane Incident Wave | Represents a wave that propagates in one direction and is uniform in the directions perpendicular to its direction of propagation. HFSS-IE supports regular propagating wave, evanescent, and ellipically polarized plane waves. |
Far Field Wave | A Far field wave is sufficiently far (that is, usually more than a wave length distance) from an antenna to approximate as a plane wave. Far field waves are mostly homogeneous. |
Near Field Wave | A Near Field wave is close enough to the antenna source for near field effects to occur, typically within a wave length. Near field waves tend to be evanescent, that is, non-homogeneous. |
After assigning an excitation, you can modify it in some of the following ways, if applicable to the excitation type:
• Change its properties.
• Delete it.
• Reassign it to another surface.
• Hide it from view.
• Modify the impedance multiplier.
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