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Definition of "line-reflect-match (LRM) calibration" |
an error correction scheme (calibration) where the calibration standards used are a transmission line, a reflect load, and a matched load. Line-reflect-match (LRM) two-port calibration requires a line standard (1 picosecond line), reflect standard (open circuit is preferred, short circuit is optional), and match standard (50 ohm load). TheLRM technique is similar to theTRLtechnique, except the reference impedance is determined by a load instead of a transmission line. It has the advantages of self-consistency, requires only two standards to contact, and has no bandwidth limitations. |
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