THE AUTOMATIC GAIN CONTROLLER AND THE METHOD THAT USES THE EFFICIENT RECEIVING STRUCTURE OF THE IMPULSE RADIO ULTRA-WIDE BAND WIRELESS COMMUNICATION SYSTEMS

摘要

PURPOSE: An automatic gain control device using effective reception structure of an ultra-wide band wireless communication system based on an impulse signal and a method thereof are provided to control receiving gain steadily by optimizing receiving state making low the gain after configuring the gain as the maximum value in early state of reception. CONSTITUTION: A matching filter(300) secures SNR(Signal to Noise Ratio) of a received signal through an analog circuit unit(100). A comparison unit(600) compares the maximum correlation value according to an output result of an adding unit(500) with preset one or more critical value. Based on determined attenuated gain result of the comparison unit, a gain controller(700) configures or changes a gain value of an LNA(Low Noise Amplifier)(120) and a VGA(Variable Gain Amplifier)(150) of the analog circuit unit.