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To possess the balun which from the year horn antenna and
To possess the balun which from the year horn antenna and
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机译：拥有从一年号角天线和
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摘要
PROBLEM TO BE SOLVED: To make it possible to transmit an audio signal to an earphone as well by securing a reception sensitivity required for frequencies over a wide band without requiring sensitivity control.;SOLUTION: Earphones 12L, 12R are connected through loading coils LLa, LLb, LRa, LRb to anti-balun side terminals of two couples of audio/high frequency signal lines 8La, 8Lb, 8Ra, 8Rb corresponding to the left and right earphones 12L, 12R connected to a balun 4 and further, the anti-balun side terminals are connected by a pair of conductor lines 20a, 20b. The loading coils LLa, LLb, LRa, LRb become low impedance with respect to a fundamental frequency (e.g. 100MHz) and become high impedance that cuts off a higher specific frequency (e.g. 200MHz) in the manner of high frequency. Further, the two couples of audio/high frequency signal lines 8La, 8Lb, 8Ra, 8Rb are used as means for transmitting audio signals to the left and right earphones 12L, 12R.;COPYRIGHT: (C)2004,JPO&NCIPI
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