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1. (WO2017033048) METHOD FOR AUTOMATICALLY ADJUSTING A TUNING UNIT, AND AUTOMATIC TUNING SYSTEM USING THIS METHOD

Pub. No.:    WO/2017/033048    International Application No.:    PCT/IB2015/057161
Publication Date: Fri Mar 03 00:59:59 CET 2017 International Filing Date: Fri Sep 18 01:59:59 CEST 2015
IPC: H03H 7/40
H01Q 1/52
H04B 1/04
H04B 7/04
Applicants: SAMSUNG ELECTRONICS CO., LTD.
BROYDE, Frederic
CLAVELIER, Evelyne
Inventors: BROYDE, Frederic
CLAVELIER, Evelyne
Title: METHOD FOR AUTOMATICALLY ADJUSTING A TUNING UNIT, AND AUTOMATIC TUNING SYSTEM USING THIS METHOD
Abstract:
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. The invention also relates to an automatic tuning system using this method. An automatic tuning system has 4 user ports (712) (722) (732) (742) and 4 target ports (911) (921) (931) (941), and comprises: 4 sensing units (9); a signal processing unit (8), the signal processing unit estimating real quantities depending on an impedance matrix seen by the target ports, using the sensing unit output signals obtained for 4 excitations applied to the user ports, the signal processing unit delivering a tuning instruction; a multiple-input-port and multiple- output-port tuning unit (3) comprising adjustable impedance devices; and a tuning control unit (4) 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.