Technical Notes > Radiated Fields > Antenna Parameters           

Radiated Power

Radiated power is the amount of time-averaged power (in watts) exiting a radiating antenna structure through a radiation boundary.

For a general radiating structure in HFSS, radiated power is computed as

(1)

where

• P_rad is the radiated power in watts.

• Â is the real part of a complex number.

• s represents the radiation boundary surfaces.

• E is the electric field.

• H^* is the conjugate of the magnetic field.

• ds is the local radiation-boundary unit normal directed out of the 3D model.

The accuracy of the computed radiated power depends on the accuracy of E and H on the absorbing boundary. In some cases it is possible that the computed radiated power may deviate slightly from the actual radiated power. To increase the accuracy of the radiated power, seed the mesh on the absorbing boundary.

Related Topics

Computing Antenna Parameters