Abstract :
The basic problem of receiving antennas is signal intensification (Y.S. Shifrin and A.I. Luchaninov, 2003, A.L. Gutman, 2004, 2005). The film, which is used for this purpose, may be an active linear system. The transition from active half-space (L.A. Vinestane, 1976) to the film is discussed in this paper