[IEEE 2014 2nd International Symposium on Wireless Systems within the Conferences on Intelligent Data Acquisition and Advanced Computing Systems: Technology and Applications (IDAACS-SWS) - Odessa, Ukraine (2014.9.11-2014.9.12)] 2014 2nd International Symposium on Wireless Systems within the Conferences on Intelligent Data Acquisition and Advanced Computing Systems - A low power design for radio frequency energy harvesting applications