ONBOARD DIRECTIVE FLIGHT ANTENNA, VEHICLE COMPRISING SUCH ANTENNA AND SATELLITE TELECOMMUNICATION SYSTEM COMPRISING SUCH A VEHICLE

摘要

The on-board directive plane antenna comprises at least one array (5) of radially slotted waveguides comprising an alternating succession of three superimposed metal plates (M1), (M2) (M3) and two dielectric substrates (Subi). (Sub 2). The two substrates (Sub1, Sub2) each comprise at least four adjacent waveguides (10, 11), corresponding and communicating with each other in pairs through coupling slots (13). Each waveguide (10) of the upper substrate (Sub2) further comprises a plurality of radiating slots (20) passing through the upper metal plate (M3), all the radiating slots (20) of the same waveguide being parallel to each other and oriented in the same direction, the radiating slots of two adjacent waveguides being arranged in chevrons. Each waveguide (11) of the lower substrate (Subi) comprises an internal individual supply circuit (25) comprising an individual electronic phase shift (21) and amplification (22) circuit.