RFID READER SUPPORTING DENSE MODE

摘要

A passive RFID reader supporting a dense mode is provided to search a channel not occupied by a real time microwave monitoring apparatus and perform communication with a tag through the search channel, thereby preventing microwave interference between readers. A modulator(120) encodes and modulates various inquiry signals. And the modulator converts and outputs the modulated inquiry signal into an analog signal. An RF (Radio Frequency) transmitter(110) performs frequency up-conversion and power amplification of the outputted analog signal. And the RF transmitter radiates the processed analog signal through a transmission antenna. An RF receiver(140) performs power amplification of a response signal from the tag received through a receiving antenna. And the RF receiver down-converts the amplified response signal.