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Realization of an active inductance for a low power high bandwidth DC power line communication network transceiver
Linköping University, Department of Science and Technology. Linköping University, The Institute of Technology.
Saab Training Systems AB, Stensholmsvägen 20, SE-56185 Huskvarna, Sweden.
Department of Embedded Systems, J önköping University, SE-55111 Jönköping, Sweden.
Department of Electronics, SP Technical Research Institute of Sweden, SE-50115 Borås, Sweden.
2010 (English)In: AEU - International Journal of Electronics and Communications, ISSN 1434-8411, E-ISSN 1618-0399, Vol. 64, no 10, 947-952 p.Article in journal (Refereed) Published
Abstract [en]

An active inductor based on an improved gyrator circuit is proposed. The active inductor is developed to be implemented in a high impedance transceiver for a wearable DC power line communication network where requirements such as low power consumption, high bandwidth and numerous nodes support are prioritized. A load isolation step is introduced to ensure the stability of the active inductance's size on different load currents. The proposed gyrator circuit is analyzed and optimized by means of theoretical calculations. The theoretical results are then verified by simulations and experiments in the frequency range up to 10MHz.

Place, publisher, year, edition, pages
Elsevier , 2010. Vol. 64, no 10, 947-952 p.
Keyword [en]
Active inductor, Gyrator, DC power line communication, High impedance transceiver, Wearable applications
National Category
Engineering and Technology
URN: urn:nbn:se:liu:diva-54457DOI: 10.1016/j.aeue.2009.07.010OAI: diva2:304081
Available from: 2010-03-17 Created: 2010-03-17 Last updated: 2015-09-09Bibliographically approved
In thesis
1. Wearable Systems in Harsh Environments: Realizing New Architectural Concepts
Open this publication in new window or tab >>Wearable Systems in Harsh Environments: Realizing New Architectural Concepts
2010 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

Wearable systems continue to gain new markets by addressing improved performance and lower size, weight and cost. Both civilian and military markets have incorporated wearable technologies to enhance and facilitate user's tasks and activities. A wearable system is a heterogeneous system composed of diverse electronic modules: data processing, input and output modules. The system is constructed to be body-borne and therefore, several constraints are put on wearable systems regarding wearability (size, weight, placement, etc.) and robustness rendering the task of designing wearable systems challenging. In this thesis, an overview of wearable systems was given by discussing definition, technology challenges, market analysis and design methodologies. Main research targeted at network architectures and robustness to environmental stresses and electromagnetic interference (EMI). The network architecture designated the data communication on the intermodule level - topology and infrastructure. A deeper analysis of wearable requirements on the network architecture was made and a new architecture is proposed based on DC power line communication network (DC-PLC). In addition, wired data communication was compared to wireless data communication by introducing statistical communication model and looking at multiple design attributes: power efficiency, scalability, and wearability.

The included papers focused on wearable systems related issues including analysis of present situation, environmental and electrical robustness studies, theoretical and computer aided modelling, and experimental testing to demonstrate new wearable architectural concepts. A roadmap was given by examining the past and predicting the future of wearable systems in terms of technology, market, and architecture. However, the roadmap was updated within this thesis to include new market growth figures that proved to be far less than was predicted in 2004. User and application environmental requirements to be applied on future wearable systems were identified. A procedure is presented to address EMI and evaluated solutions in wearable application through modelling and simulation. Environmental robustness and wearability of wearable systems in general, and washability and conductive textile in particular are investigated. A measurement-based methodology to model electrical properties of conductive textile when subjected to washing was given.

Employing a wired data communication network was found to be more appropriate for wearable systems than wireless networks when prioritizing power efficiency. The wearability and scalability of the wired networks was enhanced through conductive textile and DC-PLC, respectively. A basic wearable application was built to demonstrate the suitability of DC-PLC communication with conductive textile as infrastructure. The conductive textile based on metal filament showed better mechanical robustness than metal plated conductive textile. A more advanced wearable demonstrator, where DC-PLC network was implemented using transceivers, further strengthened the proposed wearable architecture. Based on the overview, the theoretical, modelling and experimental work, a possible approach of designing wearable systems that met several contradicting requirements was given.

Place, publisher, year, edition, pages
Linköping: Linköping University Electronic Press, 2010. 85 p.
Linköping Studies in Science and Technology. Dissertations, ISSN 0345-7524 ; 1304
Wearable System, Wearable Network, DC Power Line Communication, Conductive Textile, Electromagnetic Coupling, Washability, Energy Efficiency, Triboelectric Noise
National Category
Engineering and Technology
urn:nbn:se:liu:diva-54461 (URN)978-91-7393-423-7 (ISBN)
Public defence
2010-05-11, TP51, Täppanhuset,, Campus Norrköping, Linköpings universitet, Norrköping, 10:15 (English)
Available from: 2010-03-22 Created: 2010-03-17 Last updated: 2010-03-22Bibliographically approved

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