Radio Frequency Energy Harvesting for Carbon Monoxide Alarms

Abstract

Radio Frequency (RF) energy harvesting is an eco-friendly solution of providing power over distance to many remote devices which can avoid the dispose of batteries used in them and also lead to the convenience of not plugging into wall for recharging. However, those demonstrated before use a specific RF source to be harvested and thus require extra input power source. The purpose of this study is to focus on the immensely available ambient energy that already exists in the transmission of electromagnetic waves for communication channels and TV channels. Small broadband antenna with good efficiency is used for acquiring the RF energy , and then this low power signal from antenna is fed to a transformer matching to match the impedance of the circuit, and the rectifier circuit is used to convert the RF signal into stable DC voltage.