Frequency Dependence of a Coupled Pair of Microstrip Lines (Correspondence)

A Fourier-transform method is used for determining the frequency dependence of the transmission parameters for coupled micro strip lines. Experimental measurements of the even- and odd-mode velocities are described for substrates made of dielectric as well as demagnetized ferrite. The results show a significant difference in the amount of dispersion of the two normal modes of propagation.