RF energy harvesting holds a promise able future for generating a small amount of electrical power to drive partial circuits in wirelessly communicating electronics devices. This paper presents the overview and progress achieved in RF energy harvesting field. A modified form of existing CMOS based voltage doubler circuit is presented to achieve 160% increase in output power over traditional circuits at 0 dBm input power. A schottky diode based RF energy harvesting circuit performance is also studied with practical and simulations results.

This paper presents the application of RFID (radio frequency identification) to identify and authenticate the viewer for personalized and interactive services offered by the IPTV (internet protocol television). Main purpose of the setup is to identify and authenticate the viewer, the person who is watching the TV, for parental control, payment services, consumer feedback and input etc. Using RFID reader with IPTV STB (set-top box) for authentication of viewer and service verification results in identifying viewer, using RFID tag wirelessly and at low cost. With RFID service becoming ubiquitous and its application and connectivity with home automation systems, the proposed system is thought to be widely adaptable. This Interactive identification technique also provides reliable security to protect the viewer contents, media and parental control.