METHOD FOR AUTOMATICALLY ADJUSTING A TUNABLE ADJUSTMENT CIRCUIT, AND AUTOMATIC TUNING SYSTEM USING THE SAME

摘要

The invention relates to a method for automatically adjusting a tunable matching circuit with single input access and single output access, for example a tunable matching circuit with single input access and single output port coupled to an antenna. a radio transceiver. The invention also relates to an automatic tuning system using this method. An automatic tuning system comprises: a "user access" (5); a "target access" (6); a detection unit (1); a tunable matching circuit having a single input port and a single output port (7) having one or more adjustable impedance devices; a signal processing unit (2) which outputs a tuning instruction as a function of one or more temperature signals and as a function of at least two actual quantities dependent on an impedance seen by the target access; and a tuning control unit (3) which delivers one or more tuning control signals, the reactance of each of the adjustable impedance devices of the tunable tuning circuit being determined by at least one of one or more tuning signals. chord control.