Time-domain Green´s function technique for highly-dispersive metamaterial waveguide and antenna structures

In this paper, a time-domain Green´s function technique is presented for the analysis of linear and nonlinear guided-wave and radiated-wave effects in highly dispersive metamaterial structures. In addition, several examples are included to demonstrate the practicality of the proposed technique. The main advantages of this approach are: i) unconditional stability and fast computation due to the continuous treatment of time, ii) insight into the physical phenomena provided by the Green´s function, and iii) straightforward extensibility for the analysis of arbitrary complex dispersive linear and nonlinear guidance and radiation phenomena, iv) full compatibility with the efficient integral equation technique.