This paper considers the situation in which the individual wave launchers in an array are long compared to their cross-section dimensions. A two-wire (plus reference) transmission-line model is formulated applkable to symmetrical in-line wave launchers. The flat plates of the launchers are chosen such that a paflicular form of the characteristic-impedance matrix is realized. l%is leads to an an...

This paper proposes several systems using OFDM and DS/ SS for power line communications and evaluates their BER performances. As for the transmission lines, three kinds of power line models in which several electric apparatus are connected and an LC resonance model with a large degradation at narrow bandwidth are adopted. For the noise model, a peculiar colored noise of power line and a burst n...

0 Abstract The paper focuses on revealing the salient structural aspects of a new transmission-line model with a view to exploiting them for gains in efficiency and accuracy. The new transmission-line model has as its basis the Telegraphers Equations but the manner of solution is what distinguishes the new approach from existing transmissionline simulation techniques. The technique is based on ...

Earlier work at Texas A&M University led to the development of transmission line fault location algorithms that were based on synchronized sampling of the voltage and current data from the two ends of the line. The line models used in the algorithms were based on lumped parameter models for electrically short lines, or lossless distributed parameter models for electrically long lines. In this p...

A direct transmission line model of noise in 1D electromagnetic media is presented, and used to find the emittance and noise factor of a negative index metamaterial based on resonators and rods. The results highlight the poor noise performance of negative index materials based on low-Q magnetic resonators.

In an attempt to determine the RF shielding artifacts produced by conducting stents during MRI scanning of patients, a Transmission Line Matrix (TLM) model was developed based on the symmetrical condensed node. This approach allows considerable flexibility including freedom from stability issues and the ability to reconstruct digital signals in the time or frequency domain. To validate the resu...