Patent ID: 7466997

Claim:
A portable wireless device with a resonance bandwidth, wherein the portable wireless device comprises: a conductor element; and a resonator operating in the resonance bandwidth with a first regulating piece and a second regulating piece, wherein a capacitance effect exists between the first regulating piece and the second regulating piece and the second regulating piece comprises a main regulating piece, a first auxiliary regulating piece and a second auxiliary regulating piece with the first auxiliary regulating piece and the second auxiliary regulating piece being disposed at the two sides of the main regulating piece and having capacitance effect with the main regulating piece respectively; wherein when the resonator resonates, the resonator generates a radiation field for the portable wireless device by coupling energy to the conductor element; wherein the radiation field generated by the resonator in resonance is adjusted by regulating the capacitance effect between the first regulating piece and the second regulating piece and adjusting a winding wire length of the resonator.