Absorption device of the waves genesis, spatially selective, and in transistor.

摘要

The invention relates to a device intended to selectively absorbing the electromagnetic waves coming from multiple reflections in a microwave antenna. & br / in an antenna of the type comprising a source of energy and a lens, the lens being constituted by a plurality of parallel channels separated by a conductor planes (c), the device consists in producing a slot (f) in each of the conductor planes, arranged on the side of the input face (fe) of the lens, and comprises resistors (r) localized or distributed, connecting the two edges of the slot, the geometry of the assembly and the values of resistors are such that the waves coming from multiple reflections are absorbed by the resistors.