Ar. Djordjevic et Tk. Sarkar, CLOSED-FORM FORMULAS FOR FREQUENCY-DEPENDENT RESISTANCE AND INDUCTANCE PER UNIT LENGTH OF MICROSTRIP AND STRIP TRANSMISSION-LINES, IEEE transactions on microwave theory and techniques, 42(2), 1994, pp. 241-248
Based on numerical results obtained from solutions to integral equatio
ns, other numerical results and theoretical considerations, a set of c
losed-form formulas is presented for approximate calculation of freque
ncy-dependent resistance and inductance per unit length of microstrip
and strip transmission lines. Extensive verifications reveal that the
accuracy obtained by these closed-form formulas is better than 10% for
a wide range of parameters.