Contemporary work in energy harvesting & importance of radiation free future 5-G WCN

This paper presents contemporary works related to energy harvesting (EH) and wireless power transfer. Energy Harvesting is the need of the hour. Radiation, Specific Absorption Rate (SAR)and recent works in wireless communication are discussed. Possibilities of energy harvesting in terms of Electromagnetic Energy (EME) for green environment are presented. In general, this paper reviews EH and linkage with EME withFriis Transmission equation. Brief comments on EME and antenna/human interface are also given.