| 摘要 |
<p>The present invention relates to a node (1) in a wireless communication network, the node (1) comprising a 4TX/4RX triple band antenna arrangement (2) with at least three antenna columns (3, 4, 5) of cross polarized antenna elements (14 to 37). Each polarization of each column (3, 4, 5) has two phase networks (first phase shifters 86, 88, 90, 92, 94, 96; second phase shifters 87, 89, 91, 93, 95, 97) for independent tilt of two bands. Thus, four ports for each band (99, 100, 106, 109; 98, 101, 102, 105; 103, 104, 107, 108) of the three bands are available allowing four-layer MIMO in each band by two spaced columns and the two polarizations of the columns.</p> |
