Capacitive Body Coupled Communication: A Step Towards Reliable Short Range Wireless Technology
2015 (English)Manuscript (preprint) (Other academic)
The paradigm of computation is currently changing from desktop computing towards ubiquitous computing by interfacing ambulatory devices with mobile phones/platforms. For an efficient implementation, ultra short range wireless network technologies, such as the body area network (BAN), are needed which could avoid the saturation of carrier frequencies, low power dissipation, and the electromagnetic interference. In this work, body coupled communication (BCC) based on capacitive reactive field has been outlined as an important extension of BAN. It has been experimentally demonstrated as an alternative to traditional short range wireless communication based on radio frequency (RF) technologies. The concept of signal transmission through the capacitive BCC channel is explained using a lumped circuit model which is further supported by electromagnetic (EM) simulations. There are three different communication architectures which have been experimentally demonstrated using discrete electronic components for capacitive BCC channel for data rates between 1 kbps to 100 kbps. The architectures are based on digital baseband communication and passband communication with LC resonant mode driver. The best architecture is based on passband communication which has been demonstrated for reliable ECG measurement in the context of preventive healthcare.
Place, publisher, year, edition, pages
Electrical Engineering, Electronic Engineering, Information Engineering Computer Science
IdentifiersURN: urn:nbn:se:liu:diva-122836OAI: oai:DiVA.org:liu-122836DiVA: diva2:874197