Aalborg Universitet An Approach to Increase the Battery Time of a Mobile Phone Using Free Energy Harvesting Kirkegaard Jensen, Jesper; Jessen, Kasper; Laugesen, Kasper; Mortensen, Signe Møller; Bech Sørensen, Juliane; Forouzbaksh, Farshid Published in: Proceedings of the 2015 IEEE International Telecommunications Energy Conference (INTELEC) DOI (link to publication from Publisher): 10.1109/INTLEC.2015.7572478 Publication date: 2015 Document Version Early version, also known as pre-print Link to publication from Aalborg University Citation for published version (APA): Kirkegaard Jensen, J., Jessen, K., Laugesen, K., Mortensen, S. M., Bech Sørensen, J., & Forouzbaksh, F. (2015). An Approach to Increase the Battery Time of a Mobile Phone Using Free Energy Harvesting. In Proceedings of the 2015 IEEE International Telecommunications Energy Conference (INTELEC) IEEE Press. https://doi.org/10.1109/INTLEC.2015.7572478 General rights Copyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights. ? Users may download and print one copy of any publication from the public portal for the purpose of private study or research. ? You may not further distribute the material or use it for any profit-making activity or commercial gain ? You may freely distribute the URL identifying the publication in the public portal ? Take down policy If you believe that this document breaches copyright please contact us at vbn@aub.aau.dk providing details, and we will remove access to the work immediately and investigate your claim.