| 摘要 |
A novel wireless handset is provided which can provide control so as to tune a center frequency of impedance matching of a tunable antenna to a call frequency.A first control signal sent from the central processing unit 51 to the synthesizer 41 or data used in the central processing unit to generate the first control signal is used to generate a second control signal by the central processing unit or the control signal generator 52 provided in the outside connected with the central processing unit, and the second control signal is applied to the control circuit 30 for center frequency of impedance matching, whereby center frequencies of impedance matching of the tunable antenna 10 are controlled.
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