In case of the MCML operating in a normal mode, synthesis is an iterative process of finding topological dimensions of an MCML, which restricts propagation to a single normal mode in the line when specified modal voltages are applied.
This paper proposes a synthesis technique for the MCML operating in a normal mode.
The proposed synthesis algorithm for a symmetrically coupled MCML is based on the iteration of calculating modal voltages and changing microstrip conductor widths and spaces between them in order to find such structure of the MCML, for which the amplitudes of modal voltages are equal for every microstrip conductor.
a)]is a similar matrix of the same MCML with free space in the place of dielectric substrate; [[epsilon]reff] is the vector of relative effective dielectric permittivity; [V] is the matrix consisting of modal voltage vectors.
The analysis of the MCML can be carried out using various methods, e.
The flowchart of the synthesis algorithm of the symmetrically coupled MCML operating in a normal mode is presented in Fig.
i] on the constructive parameters of the MCML (S, h and [epsilon]r) was investigated.
The proposed technique was used for synthesizing a ten-conductor MCML operating in even and odd normal modes in order to investigate the dependence of MCML characteristics on its constructive parameters (S and [W.
In order to ensure even normal mode propagation in the MCML, the width of external conductors should be greater than that of the internal ones (Fig.
4 for the odd mode shows that the widths of external conductors have the major influence on the propagation of normal modes in the MCML, while the widths of internal conductors vary negligibly while changing S/h.