Design And Verification Of Digital Baseband For UHF RFID Tags Based On GB/T 29768 Protocol

Due to its long operation distance and high security,UHF RFID can be widely used in intelligent transportation,logistics management,etc.Tag is an important part of the RFID system,and the digital baseband is one of the core technologies of tag.Therefore,the research on the digital baseband of tag is of great value.Based on the GB/T 29768 protocol,this paper studies the design and verification of the digital baseband circuit of UHF RFID tags.Firstly,we introduce the research background of RFID system and current research status at home and abroad.And GB/T 29768 protocol is analyzed in detail by physical interface layer,anti-collision protocol,storage area,label state transition,etc.,and is compared with ISO/IEC18000-6C standard.Secondly,digital baseband is researched and designed.This article explains the system architecture and module functions,and introduce the low-power technology commonly into design.Based on the TSMC 0.18μm CMOS process,the front-end design flows like logic synthesis,timing analysis,and formal verification are executed and passed.The area of design is 140139.37μm~2,which is equivalent to 15.96K gates,and the power consumption is 4.56μW in the case of 0.9V and 1.28MHz.Finally,a system-level verification platform is built.This article comprehensively elaborates the design ideas of the verification platform from multiple perspectives,such as platform structure,component design points,and testcase.With VCS,DVE and Verdi tools,debugging of the platform and design is completed with the help of simulation log,waveform trace.Coverage rate is used to measure the completeness of the verification.Through continuous improvement of testcase to achieve coverage convergence,the final functional coverage reaches 100%,and the code coverage reaches 99.91%,which meets the expectation.