Abstract
As worldwide awareness about global climate change spreads, green electronics are becoming increasingly popular as an alternative to diminish pollution. Thus, nowadays energy efficiency is a paramount characteristic in electronics systems to obtain such a goal. Harvesting wasted energy from human activities and world physical phenomena is an alternative to deal with the aforementioned problem. Energy harvesters constitute a feasible solution to harvesting part of the energy being spared. The present research work provides the tools for characterizing, designing and implementing such devices in electronic systems through their equivalent structural models.
Highlights
Electronic devices without wires or systems with wireless capabilities are increasingly popular for they do not require connection to the mains power grid
The number three refers to piezoelectric materials polarized along their thickness electrodes attached on the the bottom surfaces)
The background Radio frequency (RF) radiation emitted by broadcast transmitters, cell phone towers, Wi-Fi nets or low power wireless networks, could eventually be used as energy harvesting sources
Summary
Electronic devices without wires or systems with wireless capabilities are increasingly popular for they do not require connection to the mains power grid. The growing demand for electronics without wires, that are green and energy efficient faces several technical and ecological challenges, like power efficiency, battery charge times, the autonomy of the system, and the lifespan of the batteries themselves, which is a function of the load patterns, and the charge and discharge cycles In this context, energy harvesters have become an efficient and green alternative for gathering energy from the environment and offer an answer to some of the aforementioned challenges [5,6]. Energy harvesting systems can gather energy from sources available on industrial or other environments such as mechanical vibration, temperature gradients, natural or artificial light, elevated levels of noise, pipes with air or water fluid This energy is managed and stored to be used to feed an electronic device. These energy harvesting technologies are described further
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