  In this paper, we show how the electromagnetic phenomena in moving
magnetodielectric media can be emulated using artificial composite structures
at rest. In particular, we introduce nonreciprocal periodically loaded
transmission lines which support waves obeying the same rules as plane
electromagnetic waves in moving media. Because the actual physical structure is
at rest, in these transmission lines there are no fundamental limitations on
the velocity values, which may take values larger than the speed of light or
even complex values (considering complex amplitudes in the time-harmonic
regime). An example circuit of a unit cell of a "moving" transmission line is
presented and analyzed both numerically and experimentally. The special case of
composite right/left handed host line is also studied numerically. Besides the
fundamental interest, the study is relevant for potential applications in
realizing engineered materials for various transformations of electromagnetic
fields.
