US 11,705,756 B2
Device for ambient thermal and vibration energy harvesting
Paul Thibado, Fayetteville, AR (US)
Assigned to Board of Trustees of The University of Arkansas, Little Rock, AR (US)
Filed by University of Arkansas Technology Ventures, Fayetteville, AR (US)
Filed on Apr. 22, 2021, as Appl. No. 17/237,676.
Claims priority of provisional application 63/013,631, filed on Apr. 22, 2020.
Prior Publication US 2021/0336480 A1, Oct. 28, 2021
Int. Cl. H02J 50/00 (2016.01); H02N 3/00 (2006.01)
CPC H02J 50/001 (2020.01) [H02N 3/00 (2013.01)] 17 Claims
OG exemplary drawing
 
1. An energy harvesting system, comprising:
a DC voltage source connected to at least one capacitor that generates an AC noise signal;
a selected bandwidth of the AC noise signal transmitting through the capacitor as a first AC power signal;
a plurality of repeated sub-units comprising respective pairs of a forward biased diode and a reverse biased diode, wherein the repeated sub-units receive the first AC power signal;
respective positive cycle metal trace connections connected to each forward biased diode;
respective negative cycle metal trace connections connected to each reverse biased diode;
a positive cycle storage capacitor connected to each forward biased diode with the respective positive cycle metal trace connections;
a negative cycle storage capacitor connected to each reverse biased diode with the respective negative cycle metal trace connections; and
wherein the sub-units are repeated with the respective positive cycle metal trace connections connected to the positive cycle storage capacitor and respective negative cycle metal trace connections connected to the negative cycle storage capacitor to rectify the first AC power signal and charge the positive cycle storage capacitor and the negative cycle storage capacitor.