IEC TR 62152:2009

FOREWORD
1 Scope
2 Normative references
3 Terms, definitions, symbols, units and abbreviated terms
4 Transfer functions and complex attenuations or losses of
  a two-port
Annex A (normative) - Concepts of normalized voltage waves,
        square root of power waves and operational
        attenuation and losses
Annex B (normative) - Image transmission parameters/quantities
        of a two-port and transmission line approximations
Annex C (normative) - Two-port theory and fundamental
        concepts in transmission engineering
Bibliography

IEC/TR 62152:2009(E) lays the foundation for agreement on the fundamental terms and definitions to be used world wide in describing the transmission properties of a two-port or quadripole end and builds a bridge between the classical quadripole theory and the scattering matrix presentation which is based on incident and reflecting square root of power waves at the input and output of a two-port. This second edition cancels and replaces the previous one and introduces some technical improvements. Important terms and definitions have been added. Some of the terms are better described in the German language and therefore many countries have originally taken terms and definitions from German and translated them into their own language.