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For six-port vector analyzer based on the E-plane waveguide cross-connection of rectangular waveguides, the benefits of determining the values of the complex reflection coefficient with the application of the principles of holography with three reference signals were approved. The value of the condition number of the matrix system of linear algebraic equations formed according to the methods processing considered was used as a criterion for the selection of the waveguides connection angle. It is shown that the allowable angle is 60 degrees.

complex reflection coefficient; holography; regularization; waveguide cross