RFID tag digital baseband system

Abstract

The invention provides an RFID tag digital baseband system. The system comprises: a clock frequency division module used for carrying out clock frequency division on a clock of the system according tothe time sequence requirement of each module and carrying out seamless switching on the clock of the module needing to be seamlessly switched; a power consumption management module used for controlling the on and off of the clock of each module according to the enable signal of each module; a decoding module used for carrying out TPP decoding on the input data from an analog front end; an encoding module used for performing dual-phase empty signal encoding or delay modulation encoding on the data provided by a data sending module; a data caching module used for caching data obtained by decoding and data read by a memory; an instruction analysis module used for cooperating with the decoding module to realize instruction analysis so as to decode the instruction; and the data sending moduleused for splicing response data packets and sending the spliced response data packets to the encoding module in series. The power consumption management module is introduced to control the clock of each module, so that the peak power consumption can be greatly reduced.

Description

technical field [0001] The invention belongs to the field of radio frequency identification technology (Radio Frequency Identification, RFID) tag chip technology, and more specifically relates to a digital baseband system for RFID tags. Background technique [0002] RFID is a technology that uses radio frequency signals to automatically identify target objects and obtain relevant information. The tag is an important part of the RFID system, and the digital baseband is one of the core technologies of the tag, so the research work on the tag's digital baseband is of great value. The energy required for the passive RFID tag to work all comes from the RF signal energy emitted by the reader, and the instantaneous power consumption of the tag is inversely proportional to the square of the working distance, so the lower the power consumption of the tag, the greater the working distance. As an important part of the label, the power consumption of the digital baseband accounts for a...

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Problems solved by technology

[0004] Aiming at the defects of the prior art, the purpose of the present invention is to provide a digital baseband system for RFID tags, aiming to solve the problem that multiple modules cooperate and work simultaneously in the current digital baseband of tags, which is easy to generate large instantaneous power consumption The problem

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