Resumo

VINUEZA, J. et al. Implementation of a wireless transmission system of electric energy through magnetic resonant coupling of near field for low power consumption devices. Maskay [online]. 2018, vol.8, n.1, pp.35-45. ISSN 1390-6712.  https://doi.org/10.24133/maskay.v8i1.598.

This paper proposes an alternative method of wireless power supply for low power consumption devices. For the design of the antennas responsible for the transmission of energy, microstrip lines were used on a FR4 substrate (Flame Retardant 4) based on mathematical methods tested from other research contributions. Therefore, integrated circuits with MMIC (Monolithic Microwave Integrated Circuits) technology are included for the generation of radio-frequency as an energy source in the range of 16 MHz to 23 MHz. In the reception phase, a three-stage doubling voltage circuit is required with the purpose of rectifying and amplifying the transmitted signal. The results of the implementation of the system indicate an efficiency between 20% and 30% for transmission distances up to 90 millimeters without obstacles. The performance decreases between 0% and 6.67% when crossing materials such as agglomerate, plastic, glass, expanded polystyrene, fabric and wood, however, it totally loses performance with metal.

Palavras-chave : Voltage Doubling Rectifier Circuit; Electromagnetic Radiation; Magnetic Resonant Coupling; Wireless Power Transfer; Microstrip; MMIC.

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