MOBILE TERMINAL HAVING BASEBAND NOISE ELIMINATION DEVICE AND ITS BASEBAND NOISE ELIMINATING METHOD

摘要

A mobile communication terminal having a device for removing noise of a baseband signal and a noise removing method thereof are provided to enable a noise filter to receive the baseband signal from a baseband chipset and filter frequency higher than a predetermined frequency to reduce noise on a frequency spectrum, thereby preventing the noise from being generated due to deterioration of modulation characteristic. A baseband chipset(100) outputs a baseband signal. A noise filter(200) receives the baseband signal from the baseband chipset(100), performs filtering of frequency higher than a predetermined frequency and reduces noise on a frequency spectrum. The noise filter(200) comprises the followings: a resistance connected to I and Q terminals outputted from the baseband chipset; and a capacitor which is commonly connected to the I and Q terminals connected to the resistance.