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US 8,576,137 B2Granted
Antenna arrangement
AssigneeCellmax Technologies AB
InventorsStefan Jonsson, Dan Karlsson
Life of this patent
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Abstract
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).
Claims16
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) 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) the phase at the outputs is varied and wherein a first side of an extruded metal profile forms the outer conductors of the coaxial lines and a second side of the extruded metal profile that is opposite the first side forms a reflective surface thus integrating the coaxial lines and the adjustable differential phase shifter are integrated parts of an antenna reflector.
6 more elements
Dependencies are inferred from the claim text.