| 摘要 |
The present invention relates to a node (1, 1') in a wireless communication system, the node (1, 1') comprising at least one transceiver unit (2; 2a), a first antenna function (3, 3') and a second antenna function (4, 4'). The antenna functions comprise at least a corresponding first antenna function first port connection (7, 7') and second antenna function first port connection (8, 8'). The transceiver unit (2, 2a) is arranged to communicate by means of at Ieast one frequency band (B). Each port connection (7, 8; 7', 8') is at least connectable to said transceiver unit (2, 2a) via electrical signal delays (11, 12, 13, 14; 15, 16) of different magnitudes. In a first mode of operation, a certain resuming main radiation lobe (17, 18, 19, 20; 21, 22, 23, 24) is acquired when the antenna functions are receiving and/or transmitting for each frequency (f1, f2, f3, f4;, f1', f2', f3', f4') in the frequency band (8). Said main radiation lobe (17, 18, 19, 20; 21, 22, 23, 24) have a main pointing direction (25, 26, 27, 28; 29, 30, 31, 32) with a certain angular direction (a1, a2, a3, a4; ß1, ß2, ß3, ß4) in azimuth and elevation with respect to a fixed angular direction (33, 34). The angular direction (a1, a2, a3, a4; ß1, ß2, ß3, ß4) for every certain frequency (f1, f2, f3, f4;, f1', f2', f3', f4') is different from the angular direction for any other frequency. The present invention also relates to a corresponding method. |
