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The problem of creating meter of complex reflection coefficient based on the electromagnetic approach using E-plane dividers is studied. A rigorous electromagnetic model of direct and inverse problems of five- and six-port measurements of complex reflection coefficient is derived. Frequency dependencies of model parameters are calculated. Properties of E-plane junctions are investigated. Approximations of detector characteristic by "polynomial" with non-integer power and by ratios of polynomial are proposed.

six-port; multiport waveguide discontinuity; complex reflection coefficient; fractional approximation; non-integer power