Title :
A Novel Passive Tag with Asymmetric Wireless Link for RFID and WSN Applications
Author :
Baghaei-Nejad, Majid ; Zou, Zhuo ; Tenhunen, Hannu ; Zheng, Li-Rong
Author_Institution :
Dept. of Electron., Comput. & Software Syst., R. Inst. of Technol., Stockholm
Abstract :
In this paper, we present a radio-powered module with asymmetric wireless link utilizing ultra wideband radio system for RFID and wireless sensor applications. Our contribution includes using two different standards in uplink and downlink. Such as conventional RFIDs, incoming RF signal transmitted by reader is used to power the internal circuitry and receive the data. However, in upstream link, an IR-UWB transmitter is utilized. Unlike traditional RFID systems, due to great advantages of UWB communication, this tag is very robust to multi-path fading and collision problem and it is more secure against eavesdropping or jamming. The module consists of a power scavenging unit, a RF receiver, an IR-UWB transmitter, digital baseband controller, and an embedded UWB antenna are designed for integration on liquid-crystal polymer (LCP) substrate, using 0.18mum CMOS process technology.
Keywords :
CMOS integrated circuits; integrated circuit design; radio transmitters; radiofrequency identification; ultra wideband antennas; ultra wideband communication; wireless sensor networks; CMOS process technology; IR-UWB transmitter; RF receiver; UWB communication; asymmetric wireless link; collision problem; digital baseband controller; embedded UWB antenna; liquid-crystal polymer substrate; multipath fading; passive tag; power scavenging unit; radio-powered module; radiofrequency identification; ultra wideband radio system; upstream link; wireless sensor network; Circuits; Downlink; Fading; Radio transmitters; Radiofrequency identification; Robustness; Sensor systems and applications; Ultra wideband communication; Ultra wideband technology; Wireless sensor networks;
Conference_Titel :
Circuits and Systems, 2007. ISCAS 2007. IEEE International Symposium on
Conference_Location :
New Orleans, LA
Print_ISBN :
1-4244-0920-9
Electronic_ISBN :
1-4244-0921-7
DOI :
10.1109/ISCAS.2007.378822
