Abstract
This work deals with the design, simulation, fabrication and experimentation of a novel 2.45 GHz rectifier for wireless power transmission applications. We have designed a voltage multiplier topology rectifier including 5 Schottky diodes known by their low threshold. This rectifier could perform a wireless power supply for many cases where the use of batteries or wires is impossible due to many limitations. The circuit was analyzed and optimized with the Harmonic Balance method provided by the Advanced Design System (ADS). Good performances are observed through the simulated results and confirmed by the fabrication tests in terms of RF-DC conversion efficiency, DC output voltage level and matching input impedance.
Highlights
The idea of wireless power transmission (WPT) has been brought to light by NikolaTESLA [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 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
In this paper, a novel voltage multiplier rectifier working at the ISM band
Summary
The idea of wireless power transmission (WPT) has been brought to light by NikolaTESLA [1] in 1899; he discovered that energy could be transported by electromagnetic waves in free space. The design of a rectenna system needs, an optimized antenna, and a performant RF-DC rectifier circuit consisting of one or more Schottky diodes [9], an input matching circuit and a DC output filter. To have a complete rectenna and to be able to judge the performance of the system, the rectifier must be loaded by a resistive element which represents the input impedance of the device to be powered.
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