Patent ID: 9337534
Filing Date: 2016-05-10
CPC Classification: H01Q,H04B

Claim Text:
1. A method for radio reception with multiple antennas in a given frequency band, using N antennas, where N is an integer greater than or equal to 2, the method comprising the steps of: tuning n antennas among the N antennas, where n is an integer greater than or equal to 2 and less than or equal to N, using an antenna tuning apparatus comprising n antenna ports, m user ports, where m is an integer greater than or equal to 2, and p adjustable impedance devices, where p is an integer greater than or equal to 2m, each of the adjustable impedance devices having a reactance at a frequency in the given frequency band, the reactance of any one of the adjustable impedance devices being adjustable by electrical means, each of the user ports delivering a signal; processing m digital signals, each of the digital signals being mainly determined by one and only one of the signals delivered by the user ports, to estimate one or more quantities representative of a channel matrix between a plurality of signals sent by a transmitter and the m signals delivered by the user ports, and to deliver a tuning instruction as a function of said one or more quantities representative of a channel matrix; using the tuning instruction to obtain a plurality of tuning control signals, the reactance of each of the adjustable impedance devices being mainly determined by one or more of the tuning control signals.