摘要:
The invention relates to a method and an apparatus for automatic tuning of an impedance matrix, for instance the impedance matrix seen by the power amplifiers of a radio transmitter using a plurality of antennas simultaneously. The apparatus has 4 user ports and 4 target ports, and comprises: 4 sensing units; a signal processing unit which estimates real quantities depending on the impedance matrix presented by the user ports, using the sensing unit output signals obtained for 4 excitations applied to the user ports, two or more of the excitations being applied simultaneously, the signal processing unit delivering a tuning instruction; a multiple-input-port and multiple-output-port tuning unit comprising adjustable impedance devices; and a tuning control unit receiving the tuning instruction and delivering tuning control signals to the multiple-input-port and multiple-output-port tuning unit, the reactance of the adjustable impedance devices being mainly determined by the tuning control signals.
摘要:
The invention relates to a method for radio communication using multiple antennas and localization variables, and to an apparatus for radio communication using multiple antennas and localization variables. An apparatus for radio communication of the invention comprises: 4 antennas, the 4 antennas forming an antenna array; a radio device; a sensor unit estimating a plurality of localization variables; an antenna tuning apparatus having 4 antenna ports, each of the antenna ports being coupled to one of the antennas through a feeder, the antenna tuning apparatus having 4 radio ports, each of the radio ports being coupled to the radio device through an interconnection; and a tuning control unit, the tuning control unit receiving a tuning instruction generated automatically within the apparatus for radio communication, the tuning control unit delivering a plurality of tuning control signals to the antenna tuning apparatus.
摘要:
The invention relates to a method for automatically adjusting a multiple-input-port and multiple-output-port tuning unit, for instance a multiple-input-port and multiple-output-port tuning unit coupled to the antennas of a radio transceiver using a plurality of antennas simultaneously. An automatic tuning system using this method has 4 user ports and 4 target ports, and comprises: 4 sensing units; a signal processing unit, the signal processing unit estimating real quantities depending on an impedance matrix seen by the target ports, using sensing unit output signals, the signal processing unit delivering a tuning instruction; a multiple-input-port and multiple-output-port tuning unit comprising adjustable impedance devices; and a tuning control unit receiving the tuning instruction and delivering tuning control signals to the multiple-input-port and multiple-output-port tuning unit, the reactance of each of the adjustable impedance devices being mainly determined by one or more of the tuning control signals.
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.
摘要:
An antenna tuning apparatus for a multiport antenna array used for sending and/or receiving electromagnetic waves for radio communication comprises: 4 antenna ports, 4 user ports, 10 adjustable impedance devices each presenting a negative reactance and having a terminal coupled to one of the antenna ports, 4 windings each having a first terminal coupled to one of the antenna ports and a second terminal coupled to one of the user ports, and 10 adjustable impedance devices each presenting a negative reactance and having a terminal coupled to one of the user ports. All adjustable impedance devices are adjustable by electrical means. Any small variation in the impedance matrix of the antenna array, caused by a change in operating frequency or a change in the medium surrounding the antennas, can be compensated with a new adjustment of the adjustable impedance devices.
摘要:
A receiver for radio communication comprises: four antennas; an antenna tuning apparatus for simultaneously tuning the four antennas, the antenna tuning apparatus comprising adjustable impedance devices, each of the adjustable impedance devices having a reactance at a frequency, the reactance of any one of the adjustable impedance devices being adjustable by electrical means; four single-input and single-output low-noise amplifiers; four analog processing and conversion circuits; a multiple-input signal processing device delivering a signal to a destination, the multiple-input signal processing device delivering a tuning instruction; a tuning control unit, the tuning control unit receiving the tuning instruction from the multiple-input signal processing device, the tuning control unit delivering tuning control signals to the antenna tuning apparatus as a function of the tuning instruction.
摘要:
The invention relates to a method for radio communication using one or more tunable antennas and an antenna tuning apparatus, and to an apparatus for radio communication using one or more tunable antennas and an antenna tuning apparatus. An apparatus for radio communication of the invention comprises: 4 antennas, each of the antennas being a tunable passive antenna; a radio device; an antenna tuning apparatus having 4 antenna ports, each of the antenna ports being coupled to one of the antennas through a feeder, the antenna tuning apparatus having 4 radio ports, each of the radio ports being coupled to the radio device through an interconnection; and a tuning control unit, the tuning control unit receiving a tuning instruction generated automatically within the apparatus for radio communication, the tuning control unit delivering a plurality of tuning control signals to the antenna tuning apparatus and to the tunable passive antennas.