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Advanced Transmission Line Simulator


Advanced RF Transmission Simulator

Line Configurator

SWR1.00
Input Zin50 + j0

The Physics Engine

1. The Reflection Coefficient at the load is calculated first:

ฮ“L = (ZL - Z0) / (ZL + Z0)

2. Input Impedance Transformation: The impedance seen by the generator changes based on length ฮฒL:

Zin = Z0 [ (ZL + jZ0tanฮฒL) / (Z0 + jZLtanฮฒL) ]

3. Standing Wave Ratio (SWR): A measure of mismatch. A ratio of 1.0 is perfect efficiency.

SWR = (1 + |ฮ“|) / (1 - |ฮ“|)

Voltage Distribution (Standing Wave)

Wavelengths: 0.25 ฮป | Phase: 0°
MATCHED LINE

Experimental Observation

In a matched condition (ZL = Z0), the voltage amplitude is constant along the line. There is no reflected wave, and SWR is 1.0.

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