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  2. Reflection coefficient - Wikipedia

    en.wikipedia.org/wiki/Reflection_coefficient

    In telecommunications and transmission line theory, the reflection coefficient is the ratio of the complex amplitude of the reflected wave to that of the incident wave. The voltage and current at any point along a transmission line can always be resolved into forward and reflected traveling waves given a specified reference impedance Z 0.

  3. Return loss - Wikipedia

    en.wikipedia.org/wiki/Return_loss

    The ratio of the amplitude of the reflected wave V r to the amplitude of the incident wave V i is known as the reflection coefficient. = Return loss is the negative of the magnitude of the reflection coefficient in dB.

  4. Fresnel equations - Wikipedia

    en.wikipedia.org/wiki/Fresnel_equations

    For s polarization, the reflection coefficient r is defined as the ratio of the reflected wave's complex electric field amplitude to that of the incident wave, whereas for p polarization r is the ratio of the waves complex magnetic field amplitudes (or equivalently, the negative of the ratio of their

  5. Reflections of signals on conducting lines - Wikipedia

    en.wikipedia.org/wiki/Reflections_of_signals_on...

    A time-domain reflectometer; an instrument used to locate the position of faults on lines from the time taken for a reflected wave to return from the discontinuity.. A signal travelling along an electrical transmission line will be partly, or wholly, reflected back in the opposite direction when the travelling signal encounters a discontinuity in the characteristic impedance of the line, or if ...

  6. Scattering parameters - Wikipedia

    en.wikipedia.org/wiki/Scattering_parameters

    This is correct for reflection coefficients with a magnitude no greater than unity, which is usually the case. A reflection coefficient with a magnitude greater than unity, such as in a tunnel diode amplifier, will result in a negative value for this expression. VSWR, however, from its definition, is always positive.

  7. Negative resistance - Wikipedia

    en.wikipedia.org/wiki/Negative_resistance

    A negative differential resistance in a circuit can amplify if the magnitude of its reflection coefficient, the ratio of the reflected wave to the incident wave, is greater than one.

  8. Smith chart - Wikipedia

    en.wikipedia.org/wiki/Smith_chart

    The Smith chart scaling is designed in such a way that reflection coefficient can be converted to normalised impedance or vice versa. Using the Smith chart, the normalised impedance may be obtained with appreciable accuracy by plotting the point representing the reflection coefficient treating the Smith chart as a polar diagram and then reading ...

  9. Mismatch loss - Wikipedia

    en.wikipedia.org/wiki/Mismatch_loss

    where is the magnitude of the reflection coefficient. Note that as the reflection coefficient approaches zero, power to the load is maximized. If the reflection coefficient is known, mismatch can be calculated by = ⁡ ()