The Design And Implementation Of The UHF RFID Tag Antenna

The Internet of things is called the third wave of the world information industry after the computer and the Internet, which has become the national strategy. RFID technology as the key technology and the important cornerstone of the Internet of things, the tag antenna directly affects the performance of RFID system. From the development trend, the Internet of things is the next trillion blue ocean market, will soon usher in a spurt of rapid development, the demand for new type of sensor tags and other products will show explosive growth. At present, the lack of research on the RFID tag antenna will seriously hinder the design and development of our country in new RFID tags and other products, and become the bottleneck of restricting its development.In this thesis, through the research method of combining theory and practice, and the implementation process from the shallower to the deeper, the basic theory and implementation method of UHF RFID tag antenna are studied in depth. Finishing and improving the UHF RFID tag antenna design and implementation of a full set of process and the specific details of the process. Summarize the common parasitic loading antenna three forms of seven kinds of basic structure. At the same time, the main design of UHF RFID tag antenna and the realization of the in-depth study, a comprehensive and systematic study on the dipole antenna in the same plane, the same direction, all right angle bend may occur, and the change of antenna performance under various conditions with the size of the structure of the situation; and on this basis, the performance by adding additional the coupling feed structure or further analysis of complex antenna changes with the size of the structure of the situation, and simulation of the ten antenna meet the application requirements, the final choice of the best performance of a practical antenna was produced and tested. The verification results show that the reliability and validity of the research results in this thesis can also solve the problem of tag antenna design in practical engineering applications.Research results in this thesis in order to solve the practical problem in the UHF RFID tag antenna design research, not only meet the tag of the multi band and reliability engineering demand, but also has low cost, small size and other advantages.