| 摘要 |
Antenna arrangement for a multi-radiator base station antenna, the antenna having a feeding network based on air filled coaxial lines (1, 2, 3), wherein each coaxial line comprises an outer conductor (8) and an inner conductor (4, 5, 6), wherein an adjustable differential phase shifter including a dielectric part (9) is arranged in the antenna and said dielectric part being movable longitudinally in relation to at least one coaxial line 1, 2, 3). |
| 主权项 |
1. A multi-radiator base station antenna, comprising: a feeding network comprising at least one set of one input (1; 21) and two output (2, 3; 22, 23) coaxial lines where the two output coaxial lines (2, 3; 22, 23) are aligned but pointing in opposite directions and the input coaxial (1) line is connected to one end of each of the two output coaxial lines (2, 3; 22, 23) via a crossover (7; 29), wherein each coaxial line comprises an outer conductor (8, 30) and an inner conductor (4, 5, 6, 25, 26, 27, 28); and an adjustable differential phase shifter including a dielectric part (9, 31) arranged for at least one set of output coaxial lines (2, 3; 22, 23) so that by moving the dielectric part (9; 31) that is present within the two output coaxial lines (2, 3; 22, 23) alters the amount of dielectric material in the first output coaxial line with respect to the amount of dielectric material in the second output coaxial line whereby the phase at the outputs is varied. |
