Reply to ‘Comments on “A Dual-Frequency Transformer for Complex Impedances With Two Unequal Sections”’

Dr. Roy points out that the proposed method presented is not valid when the complex impedances Z_o and Z_L change at the two different frequencies. Although the constant complex impedance is considered, the assumption is reasonable to a certain extent and the design method is useful in common frequency-dependent microwave circuits.In general, for the complex frequency-dependent impedances, when the relative variation of |Z_xf1-Z_xf2|/|Z_xf1(x=o, L.) is in the range of 0% ~ 10%, our design method is also useful in practical microwave circuits.