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发明申请
US20100141538A1 Earphone antenna and wireless device including the same 有权
耳机天线和无线设备包括相同

Earphone antenna and wireless device including the same
摘要：
An earphone antenna is provided that can eliminate high-frequency adverse effects on a wireless device transmitted from a human body via an earphone. The earphone antenna can ensure receiver sensitivity required for a signal in a wide frequency range without any sensitivity control operation and can transmit audio signals from a television receiver to an earphone unit. Two pairs of audio/high-frequency signal lines (8La), (8Lb), (8Ra), and (8Rb) corresponding to the left and right earphone units (12L) and (12R) are connected to a balun (4). Terminals of the two pairs of audio/high-frequency signal lines remote from the balun are connected to the left and right earphone units (12L) and (12R) via loading coils (LLa), (LLb), (LRa), and (LRb). The Terminals of the two pairs of audio/high-frequency signal lines remote from the balun are further connected to each other by a pair of conductive lines (20a) and (20b). The loading coils (LLa), (LLb), (LRa), and (LRb) have low impedance for a fundamental frequency and have high impedance for blocking a specific frequency higher than the fundamental frequency. In addition, the two pairs of audio/high-frequency signal lines (8La), (8Lb), (8Ra), and (8Rb) are used as transmission means for transmitting audio signals to the left and right earphone units (12L) and (12R).
摘要（中）：

提供一种耳机天线，其可以消除通过耳机从人体传输的无线设备的高频不利影响。 耳机天线可以确保在宽频率范围内的信号所需的接收机灵敏度，而无需任何灵敏度控制操作，并且可以将音频信号从电视接收机传输到耳机单元。 对应于左右耳机单元（12L）和（12R）的两对音频/高频信号线（8La），（8Lb），（8Ra）和（8Rb）连接到平衡 - 不平衡变换器（4）。 远离平衡 - 不平衡转换器的两对音频/高频信号线的端子经由负载线圈（LLa），（LLb），（LRa）和（LRB）连接到左右耳机单元（12L）和（12R） LRb）。 远离平衡 - 不平衡变换器的两对音频/高频信号线的端子通过一对导线（20a）和（20b）进一步连接。 负载线圈（LLa），（LLb），（LRa）和（LRb）对于基频具有低阻抗，并且具有阻抗比基频更高的特定频率的高阻抗。 此外，使用两对音频/高频信号线（8La），（8Lb），（8Ra）和（8Rb）作为发送装置，用于将音频信号发送到左耳机单元（12L）和右耳机单元 （12R）。

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