Defining the Excitation

Accessing Excitation Settings

Navigate to:
Setup tab > Excitation panel
Two excitation types available (Fig. 1):

1. Discrete Sources
2. Incident Field

Discrete Sources

• Purpose: Calculate current distribution using voltage/current sources on wires
• Power Configuration:
  • Specified Input Power: Sources auto-adjust to achieve target power (Watts)
  • Unspecified Power: Sources remain constant; power becomes output result

Incident Field (Plane Wave Excitation)

Define an incident plane wave’s direction and polarization:

Key Parameters

Parameter	Description	Units/Values
E-Field Major Axis	Linear: RMS amplitude (V/m) Elliptical: Major axis of polarization ellipse	V/m
Axial Ratio	Minor/major axis ratio: – Positive: Right-handed ellipse – Negative: Left-handed ellipse – Zero: Linear polarization	Unitless
Phase Reference	Phase shift at coordinate origin	Degrees
Gamma	Linear: Polarization angle from incidence plane Elliptical: Major axis angle from incidence plane	Degrees
Theta	Zenith angle of incidence	Degrees
Phi	Azimuth angle of incidence	Degrees

3D Visualization

Click 3D View (Fig. 3) to interactively set:

• Wave direction
• Polarization state

Note

When an incident plane wave is used as excitation, all discrete sources, if any, will not be considered in the simulation.