T. Kezai et A. Vandervorst, COMPLEX-MODES AND WAVE INTERACTION IN LOSSLESS SHIELDED WAVE-GUIDING STRUCTURES, Microwave and optical technology letters, 7(14), 1994, pp. 646-650
Complex waves in shielded lossless inhomogeneous waveguiding structure
s are investigated. A new theoretical approach for wave interaction, w
hich may result in complex modes, is develoPed using the theory of cou
pled modes. It is shown that complex modes may exist in perturbed homo
geneous waveguiding structures as a result of the coupling of a pair o
f degenerate or nearly degenerate modes. CouPled modes, in microstrips
and fin lines, are discussed and numerical data are compared. (C) 199
4 John Wiley & Sons, Inc.