VSWR Calculator - Voltage Standing Wave Ratio

Your details

Choose which measured quantity you already have.
Voltage Standing Wave Ratio, always >= 1. A perfect match is 1:1.
VSWRVery good match
1.5

Voltage Standing Wave Ratio (ratio to 1)

Reflection Coefficient (Γ)0.2
Return Loss13.98dB
Mismatch Loss0.177dB
Reflected Power4%
Transmitted Power96%
Match QualityVery good
1.5 :1
Excellent<1.5Good1.5-2Acceptable2-3Poor3-6Unacceptable6+

VSWR 1.500:1 - Very good impedance match

  • Your impedance match is rated "Very good". 96.0% of incident power reaches the load; 4.0% is reflected back to the source.
  • Return loss is 14.0 dB. A higher value means less reflected power: 20 dB means 1% reflected, 10 dB means 10% reflected.
  • Mismatch loss is 0.177 dB. This is the power budget hit you absorb even without any ohmic losses in the cable or connector.

Next stepTo improve the match, add an impedance-matching network (L-network, stub tuner, or quarter-wave transformer) or choose a cable with characteristic impedance closer to the load.

= Powered by OnlyCalculators