| 摘要 |
The invention relates to a method for radio communication using a plurality of antennas, and to an apparatus for radio communication using a plurality of antennas. An apparatus for radio communication of the invention comprises: 4 antennas; a radio device; an antenna tuning apparatus having 2 antenna ports and 2 radio ports; a switching unit comprising 4 input ports each coupled to one of the antennas through a feeder, and 2 output ports, the switching unit operating in an active configuration in which it provides a path between any one of the output ports and one of the input ports, the active configuration being determined by a configuration instruction generated by the radio device; and a tuning control unit, the tuning control unit receiving a tuning instruction generated by the radio device, the tuning control unit delivering a plurality of tuning control signals to the antenna tuning apparatus. |
| 主权项 |
1. A method for radio communication with several antennas in a given frequency band, using an apparatus for radio communication that includes N antennas, where N is an integer greater than or equal to 3, each of the N antennas being such that it can operate at any frequency in the given frequency band, the method comprising the steps of:
selecting n antennas among the N antennas, where n is an integer greater than or equal to 2 and less than or equal to N minus 1, using a switching unit comprising N input ports and n output ports, each of the N input ports being coupled, directly or indirectly, to one of the N antennas, the switching unit providing, for signals in the given frequency band and for any one of the n output ports, a path between said any one of the n output ports and one of the input ports, said one of the input ports being coupled to one of the n selected antennas, the n selected antennas being determined by a configuration instruction; coupling the n output ports, directly or indirectly, to n antenna ports of an antenna tuning apparatus comprising, in addition to said n antenna ports, m radio ports and p adjustable impedance devices, where m is an integer greater than or equal to 2 and where p is an integer greater than or equal to 2m, the p adjustable impedance devices being referred to as the adjustable impedance devices of the antenna tuning apparatus and being such that, at a frequency in the given frequency band, each of the adjustable impedance devices of the antenna tuning apparatus has a reactance, the reactance of any one of the adjustable impedance devices of the antenna tuning apparatus being adjustable by electrical means; and generating a tuning instruction, the tuning instruction having an effect on the reactance of each of the adjustable impedance devices of the antenna tuning apparatus, the tuning instruction being determined as a function of the configuration instruction. |
