Patent ID: 11909427
Assignee: STMICROELECTRONICS (TOURS) SAS
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A method for determining an inductance or capacitance value of a variable component within an impedance matching network comprising a plurality of fixed components having fixed inductance and capacitance values and said variable component having a variable inductance or capacitance value, comprising:
determining inductance and capacitance values of the fixed components so that a normalized impedance after an impedance mismatch caused by presence of a proximate conductive element belongs to an area in a Smith chart determined by all inductance or capacitance values of the variable component; and then:
a) selecting an initial inductance or capacitance value of the variable component and obtaining a measurement of a voltage indicative of power of a reflected signal received by said impedance matching network; and
b) changing the inductance or capacitance value of the variable component in a determined scanning direction and obtaining a further measurement of the voltage indicative of power of the reflected signal;
wherein step b) is repeated until said further measured voltage is strictly greater than a penultimately obtained measurement of the voltage indicative of power of the reflected signal.