An iterative method is worked out and applied to calculate the A, B, C numberspositive real numbers, connected with the normalized differential phase shift, produced by the circular waveguide, containing azimuthally magnetized ferrite which sustains normal TE_01 mode. It is based on the recently formulated definition of the quantities in question and uses the positive purely imaginary zeros of a certain complex Kummer confluent hypergeometric function, determined for a varying imaginary part of its first complex parameter. The results of investigation are presented graphically. The influence of the normalized guide radius and of the magnitude of off-diagonal ferrite permeability tensor element on the numbers is analyzed. A numerical example is presented, demonstrating the way of figuring out the phase shift with their help.
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