Patent ID: 9257957
Filing Date: 2016-02-09
CPC Classification: H03H

Claim Text:
1. An impedance matching system comprising: an impedance matching apparatus comprising an impedance matching circuit that comprises at least two variable capacitors connected between a first impedance (Z an impedance analysis apparatus configured to supply the input voltage to the impedance matching apparatus for varying the capacitance values, determine an output impedance value from the impedance matching apparatus wherein the output impedance value is changed in response to the input voltage to analyze characteristics of the at least two variable capacitors of the impedance matching apparatus, store a value of the input voltage into a first entry of a lookup table, and store value of the output impedance into a second entry of the lookup table, wherein the second entry corresponds to the first entry of the lookup table; wherein the impedance analysis apparatus is configured to continuously change the input voltage applied to the at least two variable capacitors within an entire variable range of the at least two variable capacitors and generate the lookup table by storing values of the continuously changed input voltage and values of the output impedance into corresponding entries of the lookup table wherein the values of the output impedance are detected to be changed in response to the continuously changed input voltage, wherein a first end of a first variable capacitor of the at least two variable capacitors is directly connected to a first end of the antenna impedance (ZANT) and a second end of the first variable capacitor is directly connected to a first end of the first impedance (Z wherein a first end of a second variable capacitor of the at least two variable capacitors is directly connected to a second end of the antenna impedance (ZANT) and a second end of the second variable capacitor is directly connected to a second end of the first impedance (Z wherein the impedance matching apparatus comprises an impedance detector detecting an impedance value which is changed according to a capacitance value supplied to the impedance matching circuit, and wherein the impedance detector is connected to a junction of the second end of the first variable capacitor and the first end of the first impedance (Z