Abstract
This paper reports the design, fabrication and experiments of an electrostatic vibration harvester (e-VEH), pre-charged wirelessly for the first time by using an electromagnetic waves harvester at 2.4 GHz. The rectenna uses the Cockcroft-Walton voltage doubler rectifier. It is designed and optimized to operate at low power densities and provides high voltage levels: 0.5 V at 0.5 μW/cm2 and 0.8 V at 1 μW/cm2 The e-VEH uses the Bennet doubler as conditioning circuit. Experiments show 23 V voltage across the transducer terminal when the harvester is excited at 25 Hz by 1.5 g of external acceleration. An accumulated energy of 275 μJ and a maximum power of 0.4 μW are available for the load.
Highlights
Advances in wireless communications and low consumption electronics in recent decades had contributed to the emergence of sensors and connected objects in different fields
The top view (Fig. 1 (a)) shows the rectenna and the conditioning circuit on the same substrate, which is linked to the mobile plate of the variable capacitor with four teflon bolts (Fig. 1 (b))
The electrostatic vibration energy harvesters (e-VEHs) prototype is mounted on a shaker (Bruel & Kjaer type 7541) and placed in an anechoic chamber at a distance R = 1.5 meters from a transmitting horn antenna, where the far field condition is satisfied
Summary
- A non-linear 3D printed electromagnetic vibration energy harvester P Constantinou and S Roy. - An implantable fluidic vibrational energy harvester S Inoue, T Takahashi, M Kumemura et al. - Impulse-Excited Energy Harvester based on Potassium-Ion- Electret H Ashizawa, H Mitsuya, K Ishibashi et al. This content was downloaded from IP address 109.221.210.240 on 18/01/2020 at 11:21
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