Standing Wave Ratio

Source Impedance, Z0= ohm
Load Impedance, ZL= ohm
SWR=
Return Loss, RL= dB
Efficiency, eff= %

This SWR calculator calculates the voltage standing wave ratio (SWR) from given real source and load impedances. You can also fill in Z0 and SWR or RL and calculate the Load impedance. Efficiency is a percantage of power delivered to the load compared to the ideal case of SWR=1.

© 2011 Tom Ahola