FLAT ANTENNA

摘要

The invention relates to flat antennas which are connected to waveguides and, in particular, completely-flat antennas. The inventive antennas are intended for use in mobile telephony, radars and space communications and are based on the transmission of electromagnetic waves, mainly in the microwave or millimetre-wave range, through a finite aperture having a height smaller than the wavelength. The invention comprises undulations in the surface around the aperture, such as to enable maximum transmission of the wave as well as collimation of the wave in a defined direction using a resonant leaky-wave coupling mechanism.