NUEVAS ESTRATEGIAS PARA EL DISEÑO DE SISTEMAS CHIPLESS-RFID Y APLICACIONES

Abstract

Nowadays, radio frequency identification (RFID) is one of the fastest growing technologies within the information technology (IT) industry and automatic identification. In this context, RFID is a technology which can be used in a wide spectrum of applications, such as access control, tracking, security, inventory as well as logistics. Moreover, RFID provides several advantages which are difficult to achieve with traditional optical identification systems, typically known as optical barcodes, including reading range, tag detection capability without the need to have line of sight with the reader, data storage capability, etc. Nevertheless, optical systems are extremely cheap compared to RFID systems. Therefore, in terms of identification, barcodes are still the benchmark in the market. In fact, more than 70% of the products manufactured worldwide are identified with optical systems._x000D_ The cost of the RFID tags is mainly given by the application specific integrated circuit (ASIC) connected to the antenna. Therefore, it seems reasonable that a possible solution is based on implementing RFID tags without ASIC (Chipless-RFID), where a certain metallic pattern on a substrate contains a certain identification code. This recent technology may provide a lower cost since tags are not equipped with integrated circuit. Nevertheless, it presents a series of technological challenges that have been addressed by different research groups in the last decade. One of these challenges is to increase the data capability of tags in order to be competitive with optical barcodes, or even with chipped RFID tags._x000D_ The main objective of this thesis is to develop alternative approaches or Chipless-RFID systems in order to increase the data capability, thus contributing to the advance and development of this technology. Besides, this work also focuses on applying the different approaches in real scenarios. Mainly, it is demonstrated that it is possible to use the proposed Chipless-RFID systems in secure paper applications (in order to avoid counterfeiting or copies of corporate documents, exams, ballots, etc.) as well as angular velocity sensors or as proximity sensor with identification capability.

Date of Award	25 May 2018
Original language	Spanish
Supervisor	Juan Fernando Martin Antolin (Director)