In the era of information communication technology (ICT), radio frequency identification (RFID) has been going through tremendous development. RFID technology has the potential to replace barcodes due to its large information carrying capacity, flexibility in operations, and applications. The deployment of RFID has been hindered by its cost. However, with the advent of low-powered integrated circuits (ICs), energy scavenging techniques, and low-cost chipless tags, RFID technology has achieved significant development. This book addresses the new reader architecture, presents the fundamentals of chipless RFID systems, and covers communication protocols. It also presents proof-of-concept implementations with the potential to replace trillions of barcodes per year. Overall, this resource aims to not only explain the technology, but to make the chipless RFID reader system a viable commercial product for mass deployment. Contents Overview: Chipless RFID, RFID Reader Architecture, RFID Reader Antennas, Microwave Transceiver, Digital Control Module, Integrated Chipless Tag Reader