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Sub-10-µA 868-MHz wake-up receiver ASIC for in-door localisation and geofencing applications

: Milosiu, Heinrich; Meier, Fritz; Oehler, Frank; Pflaum, Alexander


Heuberger, A.; Elst, G.; Hanke, R. ; Fraunhofer-Institut für Integrierte Schaltungen -IIS-, Erlangen:
Microelectronic systems. Circuits, systems and applications
Berlin: Springer, 2011 (Informatik)
ISBN: 978-3-642-23070-7
ISBN: 3-642-23070-9
ISBN: 978-3-642-23071-4 (Online)
ISSN: 0863-503X
Book Article
Fraunhofer IIS ()

Modern wireless receivers tend to decrease power consumption. This section shows the benefits of a sub-10 µA wake-up receiver circuit used for wireless geofencing and localisation applications with very low maintenance. The proposed wake-up receiver is a wireless receiver which continuously scans the radio channel for certain wake-up messages. Having received and decoded such a message containing additional data, the wake-up receiver triggers different actions in smart objects. The wake-up receiver consumes only 7.5 Microwatts and is suitable for mobile battery-operated or solar-cell driven smart objects. It is shown how the wake-up receiver can be used to implement a wireless in-door geofencing system. This application profits the most from both the very low deterministic current consumption and the short reaction time below 500 ms.