EARPHONE ANTENNA AND RADIO DEVICE WITH SAME

摘要

An earphone antenna wherein two pairs of audio/high-frequency signal lines corresponding to left and right earphone units connected to a balance-unbalance transformer are provided, the terminals of the audio/high-frequency signal lines on the opposite side to the balance-unbalance transformer are connected to the earphone units through loading coils, and further the terminals on the opposite side to the balance-unbalance transformer are interconnected through a pair of conductors with sound cut off means inserted. With this structure, the high-frequency adverse effect on a radio device from the human body through the earphone of the earphone antenna can be eliminated.