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1. The ratio of the amplitude of the reflected wave and the amplitude of the incident wave .

2. At a discontinuity in a transmission line, the complex ratio of the electric field strength of the reflected wave to that of the incident wave. This is typically represented with a (capital gamma).

Note 1: The reflection coefficient may also be established using other field or circuit quantities.

Note 2: The reflection coefficient is given by the equations below, where Z ₁ is the impedance toward the source, Z ₂ is the impedance toward the load, the vertical bars designate absolute magnitudeIn astronomy, absolute magnitude is the apparent magnitude, m an object would have if it were at a standardized distance away. It allows the overall brightnesses of objects to be compared without regards to distance. Absolute Magnitude for stars M In stel, and SWR is the standing wave ratioIn telecommunication, standing wave ratio SWR is the ratio of the amplitude of a partial standing wave at an antinode (maximum) to the amplitude at an adjacent node (minimum). The SWR is usually defined as a voltage ratio called the VSWR, for voltage stan:

The reflection coefficient is displayed graphically using a Smith chartA Smith chart is a type of graph used in electrical engineering that shows how the complex impedance of a transmission line varies along its length, and simplifies the design of matching networks to match the line to its load. It was invented by Phillip S.

Source: from Federal Standard 1037CFederal Standard 1037C entitled Telecommunications: Glossary of Telecommunication Terms is a U. Federal Standard, issued by the General Services Administration pursuant to the Federal Property and Administrative Services Act of 1949, as amended. This docu in support of MIL-STD-188MIL-STD-188 is a series of U. military standards relating to telecommunications. Documents 100 Common Long Haul and Tactical Communication System Technical Standards. 105 Interoperability and Performance Standards for the All Digital Tactical-To-Strategic