| 摘要 |
PURPOSE: An impedance matching box is provided to adaptively match an impedance of an antenna according to a mobile communication environment and a hardware/software environment. CONSTITUTION: An impedance matching unit (30) matches an impedance of an antenna. A control unit (12) inputs an input/output signal used for a device which uses the antenna. The control unit inputs transmission signal strength from the impedance matching unit. The control unit generates a control signal for matching the impedance of the antenna. An input/output control unit (11) converts an input/output signal of the device in a signal level which is sensible from the control unit. The input/output control unit transmits the converted signal to the control unit. [Reference numerals] (11) Input/output control unit; (12) Control unit; (13) Conversion unit; (20) Power supply unit; (30) Impedance matching unit; (AA) Frequency selection information
|
