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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Papotto, G. Carrara, F. Finocchiaro, A. Palmisano, G. |
| Copyright Year | 2012 |
| Description | Author affiliation: STMicroelectronics, Catania, Italy (Carrara, F.; Finocchiaro, A.) || University of Catania, Catania, Italy (Papotto, G.; Palmisano, G.) |
| Abstract | RF-powered transponders provide a low-cost and potentially free-of-maintenance solution for wireless sensor network (WSN) applications. By combining sensing functionalities and batteryless (RFID-like) wireless connectivity, these devices provide a viable option for all those scenarios in which node battery replacement is impractical because of either a huge number of deployed devices or inaccessible node placement. Extension of the reading range is a key design issue for RF-powered WSNs. When a backscattering-based passive RFID approach is adopted, the downlink reading range is limited by the power threshold of the input rectifier, whereas the uplink range is limited by the reader self-jamming. As increasingly efficient RF-to-DC power conversion schemes are being introduced, the uplink power budget will likely be the bottleneck of future passive RFID systems [1]. Replacing backscattering with an active transmission scheme can overcome such limitation. Several works have been reported so far following this approach. Asymmetric RF links with UWB uplink transmission have been proposed [2–4] with the aim of achieving both high data rates and low current consumption through very simple (crystal-less) circuit architectures at the sensor node side. However, adopting a UWB transmission approach considerably challenges the receiver section of the reader, thus potentially resulting in a net increase of the overall system complexity [5]. This is particularly critical in the case of mobile readers. Batteryless telemetry nodes with narrowband active transmission have also been demonstrated in [6] and [7]. Nevertheless, these circuits are not suitable for advanced communication functionalities (e.g., tag addressing, polling or control) due to the lack of a proper receiver section. |
| Starting Page | 452 |
| Ending Page | 454 |
| File Size | 324831 |
| Page Count | 3 |
| File Format | |
| ISBN | 9781467303767 |
| ISSN | 01936530 |
| e-ISBN | 9781467303774 |
| DOI | 10.1109/ISSCC.2012.6177087 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2012-02-19 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Radio frequency Wireless sensor networks Transceivers Receivers Solid state circuits CMOS integrated circuits Radiofrequency identification |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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