Bridging loss

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search

Bridging loss is the loss, at a given frequency, that results when an impedance is connected across a transmission line.[1] It is expressed as the ratio, in decibels, of the signal power delivered to a given point in a system downstream from the bridging point prior to bridging, to the signal power delivered to the given point after bridging; the term is introduced because return loss is not applicable to the high-impedance input conditions.[2] The term is also used in telephone practice and synonymous with the insertion loss that result from bridging an impedance across a circuit.[3]


  1. ^ Weik, Martin (1989). Communications Standard Dictionary. New York: Van Nostrand Reinhold. p. 109. ISBN 9781461566748.
  2. ^ Edis, E.A.; Varrall, J.E. (1997). Newnes Telecommunications Pocket Book. Oxford: Butterworth-Heinemann. p. 247. ISBN 0750603070.
  3. ^ Considine, Douglas; Considine, Glenn (1995). Van Nostrand’s Scientific Encyclopedia. New York: Springer Science+Business Media. p. 470. ISBN 9781475769203.

Source: from Federal Standard 1037C and from MIL-STD-188