The RLGCMODEL and TABLEMODEL arguments associate a W-element definition with a .MODEL using either Format 1 or Format 2, respectively. A W-element shall use either RLGCMODEL or TABLEMODEL, but not both. In both formats, the characteristics of the W-element are expressed in per unit length matrices: Ro (DC resistance), L, G, C, Rs (skin effect), and Gd (dielectric loss). Format 1: RLGC Model The RLGC .MODEL format supports frequency-independent RLGC matrices per unit length. The format also supports frequency-dependent R and G data, and lossless (LC) lines. It does not support RC lines. Because RLGC matrices are symmetrical, the RLGC model specifies only the lower triangular parts of the matrices. The syntax of the RLGC model for the W-element is: .MODEL name W MODELTYPE=RLGC N=val + Lo=matrix_entries + Co=matrix_entries [Ro=matrix_entries] [Go=matrix_entries] + [Rs=matrix_entries] [Gd=matrix_entries] [Rognd=val] + [Rsgnd=val] [Lgnd=val] Table : W-element RLGC Model Arguments Argument Description Units N=val Sets positive non-zero integer val as the number of signal conductors (excluding the reference conductor). Lo=matrix_entries DC inductance matrix, per unit H/m length. DC capacitance matrix, per unit F/m Co=matrix_entries length. Ro=matrix_entries DC resistance matrix, per unit Ω/m length. Go=matrix_entries DC shunt conductance matrix, per S/m unit length.
The RLGCMODEL and TABLEMODEL arguments associate a W-element definition with a .MODEL using either Format 1 or Format 2, respectively. A W-element shall use either RLGCMODEL or TABLEMODEL, but not both. In both formats, the characteristics of the W-element are expressed in per unit length matrices: Ro (DC resistance), L, G, C, Rs (skin effect), and Gd (dielectric loss). Format 1: RLGC Model The RLGC .MODEL format supports frequency-independent RLGC matrices per unit length. The format also supports frequency-dependent R and G data, and lossless (LC) lines. It does not support RC lines. Because RLGC matrices are symmetrical, the RLGC model specifies only the lower triangular parts of the matrices. The syntax of the RLGC model for the W-element is: .MODEL name W MODELTYPE=RLGC N=val + Lo=matrix_entries + Co=matrix_entries [Ro=matrix_entries] [Go=matrix_entries] + [Rs=matrix_entries] [Gd=matrix_entries] [Rognd=val] + [Rsgnd=val] [Lgnd=val] Table : W-element RLGC Model Arguments Argument Description Units N=val Sets positive non-zero integer val as the number of signal conductors (excluding the reference conductor). Lo=matrix_entries DC inductance matrix, per unit length. H/m Co=matrix_entries DC capacitance matrix, per unit length. F/m Ro=matrix_entries DC resistance matrix, per unit length. Ω/m Go=matrix_entries DC shunt conductance matrix, per unit length. S/m
ibis-iss_ver1_0.docx