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  4. Receiver for inductively coupled communication with an implantable sensor
 
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Receiver for inductively coupled communication with an implantable sensor

Publikationstyp
Conference Paper
Date Issued
2011
Author(s)
Moß, Christian  
Saß, Wiebke  
Müller, Jörg  
Institut
Mikrosystemtechnik E-7  
TORE-URI
http://hdl.handle.net/11420/12186
Start Page
1
End Page
5
Citation
Proceedings of the 4th International Symposium on Applied Sciences in Biomedical and Communication Technologies. - New York, NY, 2011. - (ACM International Conference Proceeding Series) (): 1-5 (2011)
Contribution to Conference
4th International Symposium on Applied Sciences in Biomedical and Communication Technologies 2011  
Publisher DOI
10.1145/2093698.2093729
Scopus ID
2-s2.0-84856707078
Publisher
ACM
A clinically approved receiver/interrogator design to establish a wireless link to a sensor module implanted inside the human body is presented. The module is powered by a low frequent magnetic field from the outside and data are transmitted via the inductive link. The receiver is able to detect load shift keying by the sensor module down to a modulation index of 10 -4. It includes a digitally configured automatic gain control with a dynamic range of 48 dB, using the three amplifiers integrated in the microcontroller. This enables software based gain control for optimum signal level adjustment before digitalization. Data reception is improved by using a digital matched filter with very low computational effort. Additionally, this filter suppresses the carrier frequency and all harmonics, which improves sensitivity. The circuit has been implemented using standard components and can be used in passive sensor networks for implants and similar applications. © 2011 ACM.
Subjects
active implant
fracture healing
inductive link
instrumented implant
load shift keying
matched filter
near field communication
receiver
DDC Class
004: Informatik
600: Technik
620: Ingenieurwissenschaften
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