SWR / Reflected Power Formulas

Table Of Definition

VSWR

=

Standing wave ratio in VSWR or SWR in number of ratio to 1
PFORWARD = Forward power in watts
PREFLECTED = Reflected power in watts
P%REFLECTED = Reflected power percentage of the forward power in percent

 

Convert Forward And Reflected Power to VSWR:

 

VSWR = (1 + SQRT(PREFLECTED / PFORWARD)) / (1 SQRT(PREFLECTED / PFORWARD))

Convert VSWR to Reflected Power percentage :

 

P%REFLECTED = (VSWR - 1)▓ / (VSWR + 1)▓ 100

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