PUB-2012-EHF

Energy Harvesting from Radio Frequency Propagation Using Piezoelectric Cantilevers

Mahmoud Al Ahmad and H. N. Alshareef, “Energy Harvesting from Radio Frequency Propagation Using Piezoelectric Cantilevers”
Solid-State Electronics
Volume 68, February 2012, Pages 13–17
Mahmoud Al Ahmad and H. N. Alshareef
Piezoelectric, Cantilever, RF signal, Energy harvesting
2012
​This work reports an induced strain in a piezoelectric cantilever due to radio frequency signal propagation. The piezoelectric actuator is coupled to radio frequency (RF) line through a gap of 0.25 mm. When a voltage signal of 10 Vpp propagates in the line it sets an alternating current in the actuator electrodes. This flowing current drives the piezoelectric cantilever to mechanical movement, especially when the frequency of the RF signal matches the mechanical resonant frequency of the cantilever. Output voltage signals versus frequency for both mechanical vibrational and RF signal excitations have been measured using different loads.