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VSWR and Antenna Tuners

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Reflection coefficient<br />

Example calculation<br />

Reflection coefficient (ρ)<br />

Is the ratio between the two impedances<br />

ρ = (Z – Zo) / (Z + Zo)<br />

For an antenna of 100 Š <strong>and</strong> a transmitter with a 50 Š<br />

output with no reactive (imaginary) component<br />

ρ = (100 – 50) / (100 + 50) or ρ =50/150 or ρ = .333<br />

7

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