METHOD AND DEVICE FOR PROCESSING UHF SIGNALS FOR AN EPC COMMUNICATION

摘要

The invention concerns a method and device for processing UHF signals for an EPC communication. The method includes the steps of picking up UHF signals by an antenna of the device for processing UHF signals, creating an envelope signal from the UHF signals picked by the antenna in a demodulator, processing the envelope signal and decoding critical TRcal symbol and data in a logic unit of the device. Furthermore, the method includes the steps of interpreting the critical TRcal symbol and data, storing the interpreted data, encoding transmit data, modulating by encoded data in a modulator, and clocking the steps as above by a local oscillator. In the step of processing the envelope signal, the critical TRcal symbol is processed by a high frequency clock and data are processed by a low frequency clock.

主权项

1. A Method for processing differently measurements of critical Tag to Reader calibration symbol and data coded by a pulse interval coding, the method proceeds communication according to an Electronic Product Code protocol, and includes following steps:
picking up Ultra High Frequency signals by an antenna of a device for processing Ultra High Frequency signals, creating an envelope signal from the Ultra High Frequency signals picked by the antenna in a demodulator, processing the envelope signal and decoding critical Tag to Reader calibration symbol and data in a logic unit of the device, interpreting the critical Tag to Reader calibration symbol and data, storing the interpreted data, encoding transmit data, modulating by encoded data in a modulator, and clocking the steps as above by a local oscillator,wherein in the step of processing the envelope signal, the envelope signal from the demodulator is sampled by a sampling circuit, which is clocked for processing the critical Tag to Reader calibration symbol at a first frequency clock, whereas data are processed at a second divided frequency clock lower than the first frequency clock.