Antenna miniaturized, a double polarization, a very wide band

摘要

The invention relates to a miniature planar antenna, of which at least one radiating element (10) generates two independent orthogonal polarised waves. Each radiating element (10 and 11) is supplied by two orthogonal supply lines (5a and 5b), situated in the same plane (5) and independent from each other, through two slots (3a and 3b) orthogonal between each other, perpendicular to the lines, engraved in a same earth plane (4) and separated from each other. The invention provides for a strong reduction in the coupling and in the cross-polarisation level and for the increase of the pass-band width. Applications: particularly to multi-satellite reception antennas and wide-band emission and reception antennas on in-board satellites.