Alcatel

Thales

Laurent Martin

G&eacute;rard Caille

Jean-Didier Gayrard

Jérôme Brossier

Jean-Marc Bassaler

B&eacute;atrice Pinte

Agn&egrave;s Lecompte

This invention concerns a multibeam antenna with adjustable pointing, comprising a single reflection arrangement and a plurality of radiating sources arranged opposite the reflection arrangement and suited to emit and/or receive radiofrequency (RF) signals, the reflection arrangement defining a centre, a focal plane, and a focal point located on the focal plane. The antenna is characterised in that at least one of the radiating sources ('mobile source') is movable substantially independently of the or each other radiating source on a scanning surface to adjust the pointing of the antenna, wherein the scanning surface coincides with the focal plane or is tangential to it at the focal point.

Multibeam antenna with adjustable pointing

The invention relates to a beam forming network of an active antenna with deployable sub-arrays. According to the invention, the network receives information on deformation of the relative position of two panels. Establishing the coherence of the signals takes account of this information to restore the received signals. The invention also provides a spacecraft including the above kind of network and further provides a beam forming method. The invention also provides a system including a craft of the above kind and at least one beacon transmitter station.

Beam forming network, a spacecraft, an associated system and a beam forming method

A domed divergent microwave lens includes a plurality of waveguides with various lengths, the greatest length being that on the axis of the lens and the length being shorter for waveguides far from the axis. The axes of the waveguides are all parallel to each other and parallel to the axis of the lens, for example.

Domed divergent lens for microwaves and an antenna incorporating it

The invention concerns a multilayer focusing spherical lens (,) adapted to be mounted in a transceive antenna device (,) of a terminal of a remote transceiver system and having a concentric focal sphere (S), the lens including a central layer (,) and a peripheral layer (,) having different dielectric constants, each dielectric constant value being determined so that the lens (,) focuses parallel microwave beams towards the focal sphere (S) concentric with the lens. A transceive antenna includes a lens of the above kind and a terminal for transmitting and receiving radio signals to and from at least two remote transceiver systems moving at different points in the field of view of the terminal, said terminal including an antenna of the above kind. The invention applies in particular to systems for transmitting data at high bit rates to and from a constellation of satellites, for public or private, civil or military use.

Growing community of inventors

Toulouse, France

Laurent Martin