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Harvesting RF Ambient Energy dari End Device LoRa (Long Range Access)

2017; LPPM Institut Teknologi Telkom Purwokerto; Volume: 9; Issue: 4 Linguagem: Inglês

10.20895/infotel.v9i4.282

2460-0997

Mery Diana, Refdinal Nazir, Arief Rufiyanto,

IoT-based Smart Home Systems

RF Energy Harvesting is a technology that harvest RF ambient energy from the wearable devices. One of wearable devices that can act as a source is LoRa end device. LoRa (Long Range Access) is part of Low Power Wide Area Network (LPWAN) which operate in unlicensed frequency (ISM). As a technology of wireless network, end devices of LoRa will be taken in remote area that hardly to access. End device LoRa acts as a transceiver that transmits and receives data from the gateway. As a transceiver, the LoRa end device requires energy availability. In remote area, RF ambient energy from the LoRa end device can be utilized as a source of RF energy that can be harvested and stored This paper discusses how to harvest the RF ambient energy emitted by the LoRa end device using the microstrip antenna as the receiver and the voltage multiplier as both a rectifier and a voltage multiplier. The energy harvested from one end device and stored temporarily in the capacitor is 163pJ with a distance 11 cm from the source. This harvested energy can be stored on battery or capasitor bank to be used in future