Evaluation of the Trapped Surface Wave of a Vertical Electric Dipole Based on Undetermined Coefficient Method in the Presence of N-Layered Region: A Graphical Approach

Table 1

Comparison of computational feasibility and complexity for root finding algorithms. (n: represents the order of computations).

Method	Analytical solution by graphical approach	Computation complexity of root finding algorithm	Nested recursion
Three-layered case	In lossless case	Easy	1
Four-layered case	In lossless case	Complicated	2
	Unavailable	Complicated	N − 2
by proposed equations (25)–(28)	In lossless case	Easy	0
by proposed equations (23) and (24)	In lossless case	Complicated	0