| 摘要 |
<p>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 (Δζ) between the combined signals. A phase-shifter (32) adjusts the direction of the antenna polarisation. The adjustment can be computer-assisted.</p> |
