Bridging loss

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]

References

Weik, Martin (1989). Communications Standard Dictionary. New York: Van Nostrand Reinhold. p. 109. ISBN 9781461566748.
Edis, E.A.; Varrall, J.E. (1997). Newnes Telecommunications Pocket Book. Oxford: Butterworth-Heinemann. p. 247. ISBN 0750603070.
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

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[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.