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IEVref:702-07-25ID:
Language:enStatus: Standard
Term: return loss
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Definition: the modulus of the reciprocal of the reflection factor, generally expressed in decibels

NOTE – When impedances can be defined, the return loss is given by the formula:

20lg|r|=20lg| Z _ Z _ Z _ + Z _ | MathType@MTEF@5@5@+=feaagCart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLnhiov2DGi1BTfMBaeXatLxBI9gBaerbbjxAHXgarqqtubsr4rNCHbGeaGqipG0dh9qqWrVepG0dbbL8F4rqqrVepeea0xe9LqFf0xc9q8qqaqFn0lXdHiVcFbIOFHK8Feea0dXdar=Jb9hs0dXdHuk9fr=xfr=xfrpeWZqaaeqabiGaciGacaqadmaadaqaaqaaaOqaaiabgkHiTiaaykW7caaIYaGaaGimaiaaykW7caqGSbGaae4zaiaaykW7daabdaqaaiaadkhaaiaawEa7caGLiWoacqGH9aqpcaaIYaGaaGimaiaaykW7caqGSbGaae4zaiaaykW7daabdaqaamaalaaabaGabmOwayaaDaGaeyOeI0IabmOwayaaDyaafaaabaGabmOwayaaDaGaey4kaSIabmOwayaaDyaafaaaaaGaay5bSlaawIa7aaaa@52D1@

where Z is the characteristic impedance of a transmission line ahead of a discontinuity, or the impedance of a source, and Z′ is the impedance after the discontinuity or the load impedance seen from the junction between the source and the load.


Publication date:1992-03
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Internal notes:2017-06-02: Cleanup - Remove Attached Image 702-07-25.gif
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