Patent ID: 7408426

Claim:
A method for transmitting through an interconnection with n transmission conductors and a reference conductor, n being an integer greater than or equal to 2, the method providing, in a known frequency band, m transmission channels each corresponding to a signal to be sent from an input of at least one transmitting circuit to an output of at least one receiving circuit, where m is an integer greater than or equal to 2 and less than or equal to n, the method comprising the steps of: proportioning the interconnection, taking into account lumped impedances seen by the interconnection and caused by circuits connected to the interconnection elsewhere than at the ends of the interconnection, so as to be able to model the interconnection as a multiconductor transmission line having uniform electrical characteristics over the length of the multiconductor transmission line for the known frequency band, the electrical characteristics being such that propagation constants of different propagation modes are substantially equal in the known frequency band; determining a characteristic impedance matrix of the multiconductor transmission line in the known frequency band; placing at both ends of the interconnection a termination circuit having an impedance matrix approximating the characteristic impedance matrix, using one of the transmitting circuits to which m input signals are applied, so as to obtain at an output of said one of the transmitting circuits, the output being connected to at least m transmission conductors among the transmission conductors the generation of natural electrical variables, each being proportional to one of the input signals; and using one of the receiving circuits, the input of which is connected to at least m transmission conductors among the transmission conductors, so as to obtain, at the output of said one of the receiving circuits, m output signals each corresponding to one of the transmission channels, each of the m output signals being proportional to a single natural electrical variable among said natural electrical variables.