Two-port network analyzer calibration using an unknown 'thru'

Abstract
A procedure performed by using a genuine two-port reciprocal network instead of a standard 'thru' in a full two-port error correction of an automatic network analyzer is presented. Although it can be applied to any type of waveguide system, the proposed technique is particularly useful with noninsertable coaxial or one-wafer devices. Experimental comparisons show that the suggested procedure provides a great degree of accuracy.

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