| 摘要 |
PURPOSE: A reader of an RFID(Radio Frequency IDentification) performing correction by correlation value about a digital Q signal and a digital I signal is provided to increase the accuracy of reception operation when communicating with RFID tag. CONSTITUTION: A receiver inputs received signal from an RFID tag. The receiver generates Q signal and I signal of the different phases. A first ADC(Analog to Digital Converter)(265q) converts Q signal from a receiver into a digital Q signal. A second ADC(265i) converts I signal from a receiver into the digital I signal. A controller(24) comprises a digital demodulator and a decoder.
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