| 摘要 |
A mobile terminal and their noise erasing method without deterioration of wireless receiving performance are provided to detect noise signal of specific frequency in inducing current applied to a power supply unit in the contactless charge. A mobile terminal(100) includes a noise detector, a signal generator, a signal amplifier and a signal applier. The noise detector detects the noise generated in the charge of the battery. The signal generator produces the signal for the noise elimination for eliminating the noise component. The signal amplifier amplifiers a special level by controlling the gain of the noise removing signal. The signal applier applies noise removing signal amplified as the specific gain.
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