| 摘要 |
PURPOSE: A device is provided to improve receiving efficiency of interference environments, and maintain a dynamic range in mobile communication terminal devices. CONSTITUTION: A method for improving receiving efficiency and a high dynamic range in mobile communications terminal devices comprises: a low noise amplifier for amplifying a received signal through an antenna; a first controlling section for tracking input power received through the antenna in the normal state; a second controlling section for tracking the extent of interference environments in mobile communications terminal devices. The low noise amplifier makes the current flowing in the low noise amplifier become a low value, when it is the little input power in the normal state, by inputting the first controlling section and the second controlling section. The low noise amplifier controls the current flowing in the low noise amplifier to a high value, when the input power is increased in the normal state, and controls the current flowing in the low noise amplifier to a preset high value in interference environments.
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