The RS module defines the
direction from which the incident electromagnetic field encounters the circuit
and the polarization of the field. By
changing the values in the three text boxes across the bottom of the RS Source
form the direction and polarization can be adjusted. The RS Source form is
shown in the figure below.
The
electric field and magnetic field components of an electromagnetic field are, by
definition, orthogonal to one another and to the direction of propagation.
Changing the E-field and H-field direction (i.e., changing the polarization,
elevation, and azimuth) changes the amplitude of the signal induced on the
transmission line. Rotating the polarization, elevation, or azimuth
through any 90° arc fully defines the
range of induced field levels for a given incident field propagation
direction. Rotating the field beyond 90° provides no new information. It is
only necessary to analyze polarization, elevation, and azimuth between 0° and 90°.
