Relative operating bandwidth of quarter-wave transformer

The relative operating bandwidth of a quarter-wave transformer depends on the reflection coefficient, the surge impendance of the transmission line to which the transformer is connected and the load resistance.

relative_bandwidth

Relative operating bandwidth is the ratio of the bandwidth to the center frequency.

Symbol:

b

Latex:

\(b\)

Dimension:

dimensionless

load_resistance

electrical_resistance of the load.

Symbol:

R_L

Latex:

\(R_\text{L}\)

Dimension:

impedance

surge_impedance

surge_impedance of the transmission line.

Symbol:

Z_S

Latex:

\(Z_\text{S}\)

Dimension:

impedance

reflection_coefficient

reflection_coefficient.

Symbol:

Gamma

Latex:

\(\Gamma\)

Dimension:

dimensionless

law

b = 2 - 4 / pi * acos(2 * Gamma * sqrt(R_L * Z_S) / (sqrt(1 - Gamma^2) * Abs(R_L - Z_S)))

Latex:
\[b = 2 - \frac{4}{\pi} \operatorname{acos}{\left(\frac{2 \Gamma \sqrt{R_\text{L} Z_\text{S}}}{\sqrt{1 - \Gamma^{2}} \left|{R_\text{L} - Z_\text{S}}\right|} \right)}\]