RT Conference Proceedings T1 Measuring odd- and even-mode propagation constants of coupled-lines by means of the lattice network A1 Hernández-Escobar, Alberto A1 Abdo-Sánchez, María Elena A1 Esteban Marzo, Jaime A1 Martín-Guerrero, Teresa María A1 Camacho-Peñalosa, Carlos K1 Redes de banda ancha - Medición AB A classic method for measuring the propagation constant of transmission lines is the one proposed by Bianco and Parodi more than four decades ago [1]. It is based on the invariance of the cross ratio of four complex numbers under a bilinear transformation. This means that it is possible to extract the value of the propagation constant (both real and imaginary parts) of an arbitrary transmission line (TL) by measuring, through an arbitrary (and unique) two-port, the input reflection coefficient of four TL sections of different lengths provided they are terminated by the same load. The accuracy of the original method can be greatly improved by measuring a higher number of TL sections and taking all the possible combinations of four lines. YR 2019 FD 2019-10-30 LK https://hdl.handle.net/10630/18676 UL https://hdl.handle.net/10630/18676 LA eng NO Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech. DS RIUMA. Repositorio Institucional de la Universidad de Málaga RD 25 ene 2026