Abstract: “System lifetime of wireless sensor networks (WSN) is inversely proportional to the energy consumed by critically energyconstrained sensor nodes during RF transmission. In that regard, modulated backscattering (MB) is a promising design choice, in which sensor nodes send their data just by switching their antenna impedance and reflecting the incident signal coming from an RF source.”

Keywords: Sensor networks, wireless passive sensor networks, modulated backscattering, communication coverage.