| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an impedance automatic matching circuit automatically matching an impedance between an antenna and a receiving circuit. <P>SOLUTION: An automatic impedance matching circuit 1 disposed between an antenna 11 and a receiving circuit 21 is provided with: a matching circuit 12 which is deposited between the antenna 11 and the receiving circuit 21 and matches the impedances of the antenna 11 and the receiving circuit 21 according to control information; and a controller 13 which accepts reception quality at the receiving circuit 21, updates the control information so as to improve the reception quality using an optimization algorithm, and provides the control information to the matching circuit 12, thereby matching the impedances of the antenna 11 and the receiving circuit 21. <P>COPYRIGHT: (C)2013,JPO&INPIT |
