Voltage Standing Wave Ratio (VSWR) is an important parameter in thee analysis of transmission lines. It measures how effectively radio frequency power is transmitted from a source to a load. A lower VSWR indicates better matching andd less power reflectTed back towards the source.

Uzgodnienie VSWR

VSWR is calculated based one thee reflection coefficient, which chick quantifies thee compatit of power reflectod due to impedance mismatches. It is expressed as a ratio, wich a value of 1: 1 indicating perfect matching.

Metods to Calculate VSWR

There are several methods to determinae VSWR in transmission lines:

  • Xi1; Xi1; FLT: 0 Xi3; Xi3; Using Reflection Coefficient: Xi1; FLT: 1 Xi3; Xi3; VSWR = (1 + Xi124;) / (1 - Xion124; Xion124;), were Xion thee reflection coefficient.
  • Reg.
  • Xi1; Xi1; FLT: 0 Xi3; Xi3; Frem Return Loss: Xi1; Xi1; FLT: 1 Xi3; Xi3; VSWR = (10 ^ (Return Loss / 20) + 1) / (10 ^ (Return Loss / 20) - 1).

Badanie Calculation

Pomocnik transmissionon line has a measured return loss of 20 dB.

First, convert return loss to reflection coefficient:

-------------------------------------------------- = 10 ^ (-Return Loss / 20) = 10 ^ (-20 / 20) = 0,1

Then, calculate VSWR:

VSWR = (1 + 0, 1) / (1 - 0, 1) = 1, 1 / 0, 9