Ze: Impedance for even-mode (偶模阻抗)
Zo: Impedance for odd-mode(奇模阻抗)
Z0: For coupled-line components, such as SCLIN or MCLIN, Z0=sqrt(Ze*Zo)
C_DB: Coupling factor in dB, i.e., C(dB) = 20log10 [(ZE-ZO)/(ZE+ZO)] (耦合因子)
E_EFF: Effective electrical length of line or coupled section (angle units) (等效电长度)