Patent ID: 8094859

Claim:
An earphone antenna device, operable to be connected with a terminal device having a wireless communication function, made by integrating (i) an earphone device in which two earphone sections are provided at both sides, respectively, of a supporter, with (ii) an antenna device, said earphone antenna device comprising: two earphone cables, connected with the two earphone sections, respectively, for supplying audio signals to the earphone sections; and an audio common cable, one end of which is connected with the terminal device and the other end of which is connected with the two earphone cables, said earphone antenna device further comprising: a pair of antenna elements, extending from a center of the supporter toward the earphone sections, respectively, at both sides of the supporter, the antenna elements being insulated from the earphone cables and being provided along the supporter; and an antenna coaxial cable, one end of which is connected with the terminal device and the other end of which is connected with the antenna elements, the antenna coaxial cable being insulated from the audio common cable and being integrated with the audio common cable, wherein each of the earphone cables includes a signal line and a ground line, and the ground line of each earphone cable is connected with a ground line of the antenna coaxial cable via a high-frequency choke coil, so that a ground line of each of the antenna elements doubles as a ground line of each of the earphone sections.