Patent ID: 7548212

Claim:
A cylindrical electronically scanned antenna, comprising: a set of radiating guides arranged in cylinder form to produce an antenna beam; an array of 3 dB couplers in waveguide form having inputs and an outputs, the inputs of which are lit by a set of microwave feeds, the outputs of each coupler being coupled to the input of a radiating guide; an array of pairs of phase-shifting cells, each coupled to a 3 dB coupler, an incoming wave (E) from the microwave feeds being phase-shifted by a controllable phase shift (Δφ), the angular offset of the antenna beam being dependent on the phase shift (Δφ), wherein the microwave feeds are arranged on a cylindrical circumference inside the cylinder formed by the set of radiating guides so that each feed lights a part of the array of couplers, the microwave feeds being activated in turn.