High Efficiency Harmonic Harvester Rectenna for Energy Storage Application

Abstract

This work presents harmonic harvester Rectenna integrated power management circuitry for improving RF-DC power conversion efficiency. The circuitry is developed for battery charging or energy storage application; resistance emulation method is used to realize a matching load resistance at output terminals. The proposed technique is useful for harvesting near maximum output power from the dual rectifiers (fundamental and harmonics) independently. Also, it delivers the combined maximal power to the energy storage cell. The power management module based on dual input buck-boost converter with simple open loop control is utilized.

Rectenas para el Cosechamiento de Energía de los Sistemas de Comunicaciones en RF: Una Revisión

“…Adicionalmente, se ha conectado un elemento posterior al rectificador en un 16% de las rectenas, dicho elemento es un convertidor DC-DC [19,24,26,32,45,47,49,50,55,61,73,79,82,91,92,108,113]. Aunque la eficiencia total de la rectena se ve disminuida por las pérdidas que existen en dicho elemento, éste ayuda a mantener el nivel de tensión que se le aplica a la carga.…”

A New Configuration of A High Output Voltage 2.45 GHz Rectifier For Wireless Power Transmission Applications

“…Where ⁄ . From (3), (4), (5) and (9a), the relationship between θ off and r is derived as (11) θ off is determined by the ratio of R s to R L and the ratio of the forward voltage drop V f to the dc output voltage V 0 . V f is solved with the I-V relation of the diode:…”

“…The idea of wireless power transmission (WPT) has been brought to light by Nikola TESLA [1] in 1899; he discovered that energy could be transported by electromagnetic waves in free space. A WPT system contains a transmission part consisting of a DC to microwave conversion block, a transmitting antenna and a reception part also called rectenna [2][3][4][5] (Rectifying Antenna) used to convert the microwave power into exploitable energy to cover the needs in terms of power supply. The rectenna is the key element of a WPT system, it was invented in 1964 by the U.S. engineer William Brown [6] who demonstrated it by an helicopter power by electromagnetic waves transmitted from the ground and received by an attached rectenna.…”

A new design of a microstrip rectenna at 5.8 GHz for wireless power transmission applications

“…The rectenna (Rectifying Antenna) [6], [7] contains a receiving antenna and an RF-DC conversion circuit. The RF-DC conversion circuit often consists of one or more Schottky diodes, and a DC output filter.…”