System-on-flexible-substrates: electronics for future smart-intelligent world

In this paper, we present architecture, circuit implementation and integration issues of embedded smart systems on flexible substrates for future ubiquitous intelligent world. The work is exampled by several concepts of innovative, self-powered, long-range interconnected radio-frequency identification and sensor networks in warehouse and intelligent goods distribution systems. Two types of RFID concepts are designed for this network. The first one is a self-powered, ultra-low power UWB RFID. A power scavenging system is designed which can draw energy from the 802.11 access point and its surrounding electromagnetic waves. In the second demonstration, we developed a chipless passive RFID based on time-domain reflection principle. As this RFID is chipless and needs only interconnections and antenna, it is potentially fully printable on flexible substrate such as a paper board. Finally, some implementation and experimental results are presented