A high‐efficiency power management unit with wide dynamic range for RF energy harvesting system

Design of RF energy harvesting platforms for power management unit with start-up circuits

An RF-DC Converter with Wide-Dynamic-Range Input Matching for Power Recovery Applications

An improved RF–dc converter based on a class-E rectifier with wide-dynamic-range input matching is presented. The input impedance is controlled by two varactor diodes to compensate for impedance changes with RF input power and dc loading conditions. The RF–dc converter achieved a peak efficiency of 60% and an S11 less than −20 dB over an input RF power range of 12 dB and an operating battery vo...

RF Energy Harvesting System And Rectennas

Recent advances in ultra-low power wireless communications and energy-harvesting technologies have made self-sustainable devices feasible. Typically, the major concern for these devices is battery life and replacement. Applying energy harvesting techniques to these devices can significantly extend battery life and sometimes even eliminate the need for a battery. This technique is widely applica...

Ultra-low power 2.4GHz RF energy harvesting and storage system with -25dBm sensitivity

An RF energy harvesting and storage system is described that trickle charges a battery from incident power levels as low as -25 dBm referred to the feedpoint of an 8 dBi patch antenna. The circuit is optimized for the indoor ambient power range typically observed in the 2.4 GHz ISM band so that we can harvest the energy provided by nearby Wi-Fi, Bluetooth and other devices. In this incident pow...

Transmission Power and Antenna Allocation for Energy-Efficient RF Energy Harvesting Networks with Massive MIMO

The optimum transmission strategy for maximizing energy efficiency (EE) of a multi-user massive multiple-input multiple-output (MIMO) system in radio frequency energy harvesting networks is investigated. We focus on dynamic time-switching (TS) antennas, to avoid the practical problems of power-splitting antennas, such as complex architectures, power loss and signal distortion when splitting the...