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An efficient small size electromagnetic energy harvesting sensor for low-DC-power applications, ISSN / e-ISSN 1751-8725 / 1751-8733

Citation:

Fayçal M, Zohir D. An efficient small size electromagnetic energy harvesting sensor for low-DC-power applications, ISSN / e-ISSN 1751-8725 / 1751-8733. IET Microwaves, Antennas & PropagationIET Microwaves, Antennas & Propagation. 2017;Volume 11 :pp 483 - 489.

Date Published:

2017

Abstract:

An efficient small size electromagnetic energy harvesting sensor for low-DC-power applications is proposed. The sensor consists of two main parts: a dual polarisation square patch antenna used to collect the RF energy at a central frequency of 2.45 GHz, and two voltage doublers rectifier circuit for the RF-to-DC conversion. The overall size of the design is 50 × 50 × 6.2 mm 3 . Firstly, the antenna is designed using high-frequency structure simulator software; followed by the design of the rectifier circuit in advanced design system. After simulations, a sensor prototype is fabricated using F4B as the antenna substrate. Measurements show that the sensor achieves a comparatively high maximum measured efficiency of 41% for a power level of -10 dBm. The sensor has a simple structure, it is compact sized, light weight, and presents a high RF-to-DC conversion efficiency for low-RF-power levels which can be used to charge different low-DC-power devices.