| 摘要 |
<p>A multi beam antenna arrangement (1) comprises a plurality of antenna elements (10) arranged to form an antenna array with a first end and an opposite second end, and at least one beam- forming matrix (20) having a plurality of antenna ports (21) connected to the antenna elements (10), the antenna arrangement (1) is configured to generate a plurality of orthogonal antenna beams. Further, the beam-forming matrix (20) comprises at least two antenna ports (21) with a predetermined order and phase relation and a plurality of beam ports (22), wherein the at least two antenna ports (22) are fewer in number than the plurality of antenna elements (10), and wherein a subgroup of the antenna ports (21) is connected to at least two of the plurality of antenna elements (10) via at least one splitter/combiner arrangement (30), to enable dividing a power supplied by the antenna port (21) to the at least two antenna elements (10) or by combining a respective power received on the at least two antenna elements (10), and wherein the antenna elements (21) are positioned in the antenna array with a corresponding predetermined order and phase relation as the antenna ports (21) to reduce side-lobe levels of the antenna arrangement (1) while maintaining a linear phase gradient over the antenna elements (10).</p> |
