Article · Wikipedia archive · Last revised Jun 22, 2026

Insertion gain

In telecommunications, insertion gain is the gain resulting from the insertion of a device in a transmission line, expressed as the ratio of the signal power delivered to that part of the line following the device to the signal power delivered to that same part before insertion. Gains less than unity indicate insertion loss. Incident power is made of two part, the reflection from the device and the power absorbed by the device.

Last revised
Jun 22, 2026
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In telecommunications, insertion gain is the gain resulting from the insertion of a device in a transmission line, expressed as the ratio of the signal power delivered to that part of the line following the device to the signal power delivered to that same part before insertion. Gains less than unity indicate insertion loss. Incident power is made of two part, the reflection from the device and the power absorbed by the device.1

Insertion gain is usually expressed in decibels.

References

References

 This article incorporates public domain material from Federal Standard 1037C. General Services Administration. Archived from the original on 2022-01-22. (in support of MIL-STD-188).