Abstract
The purpose of this work is to design an energy scavenging system. The system scavenges ambient energy from indoor Wi-Fi routers. It makes use of low cost, environment-friendly and widely available corrugated cardboard substrate. The circuit design is realized on metallic layers made of low-cost copper tape. A Villard rectifier is used to convert the RF energy into dc. The measured scavenged power of the system at the power density of 10 μW cm−2 is −15.76 dBm (26.5 μW). The measured conversion efficiency is 58.6%. The presented design has the lowest cost among other similar works.
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