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Ansys Learning Forum › Forums › Discuss Simulation › Electronics › How to excite a Driven Terminal HFSS design so that the input power is 1W › Reply To: How to excite a Driven Terminal HFSS design so that the input power is 1W

September 20, 2022 at 3:44 pm
Faezeh Ladani
Ansys Employee

Hi there! 

P=|V|^2/R. If the port impedance is 50 ohms, you need to excite the port with sqrt(50) volts to results in 1W incident power at the port. Note that accepted power by the antenna depends on the input impedance at the port and associated mismatch.Â