H - Electricity – 01 – Q
Patent
H - Electricity
01
Q
H01Q 15/24 (2006.01) H01Q 21/24 (2006.01) H04B 1/12 (2006.01)
Patent
CA 2282679
The invention concerns an antenna for receiving and/or transmitting signals with rectilinear polarisation comprising at least a first radiating element (24, 26) with circular polarisation in one direction and at least a second radiating element (28, 30) with circular polarisation in the other direction. The signals, of substantially equal amplitude, supplied by the radiating elements with circular polarisation in opposite directions are combined to supply a signal with rectilinear polarisation. The direction of this rectilinear polarisation depends on the phase constant ( DELTA phi ) between the combined signals. A phase-shifter (32) adjusts the direction of the antenna polarisation. The adjustment can be computer-assisted.
L'antenne destinée à la réception et/ou l'émission de signaux à polarisation rectiligne comporte au moins un premier élément rayonnant (24, 26) à polarisation circulaire dans un sens et au moins un second élément rayonnant (28, 30) à polarisation circulaire dans l'autre sens. Les signaux, d'amplitudes sensiblement égales, fournis par les éléments rayonnants de polarisation circulaire en sens contraires sont combinés pour fournir un signal à polarisation rectiligne. La direction de cette polarisation rectiligne est fonction du déphasage (.DELTA.~) entre les signaux combinés. Un déphaseur (32) permet de régler la direction de polarisation de l'antenne. Le réglage peut être automatisé.
Bleret Jean
Bourgeois Alain
Alcatel
Robic
LandOfFree
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