Voltage Standing Wave Ratio
This calculator is designed to give the efficiency loss of a given antenna, based on the input of VSWR (voltage standing wave ratio) and other subsequent factors. The calculator is designed to be fine tuned after the initial input. With the initial values in place, you need only click on Calculate. However, each field, when changed will allow recalculation or you may continue to use the Calculate button if your browser does not respond. Subsequently, every field is a calculated value, including VSWR. Modification of one field will have a direct relationship on all others.
VSWR Loss Calculator
VSWR Required Data Entry (All Fields Valid)
VSWR : 1
Modifiable Calculated Results
Loss in %
Loss in dB
Input Power dBm W
Reflected Power dBm W
Output Power dBm W