Spherical lens focusing multilayer

The invention relates to a lens (21) focusing spherical multilayer adapted to be mounted in an antenna device to transmit / receive a terminal of a transmitter / remote receiver, and having a concentric focal sphere (S) characterized in that it comprises two layers, respectively central (21a) and peripheral (21b) having different dielectric constants, each constant dielectric value being determined such that the lens (21) focuses the parallel microwave beams toward the focal sphere (S) concentric with the lens. It also relates to a transmitting / receiving antenna having such a lens, and a transmit terminal / receive radio signals to and at least two transmitter systems / remote receiver moving at different points of visible space by said terminal report, the terminal comprising such an antenna. The invention is particularly applicable to data sets of high-speed to and from a constellation of satellites, public or private, civilian or military use.