The Internet of Things (IoT) fulfills a promise of a more efficient and connected world. But with dozens of devices per household, battery management must become wireless and autonomous. This problem is now being solved through power harvesting, which enables a circuit to power itself from energy in the environment. This white paper discusses efforts from Ericsson and the University of Freiburg to develop wireless power of a couple of hundred nanowatts at 1V to power a sensor node.
The challenge was to satisfy the impedance matching requirement when the antenna, resonator, and matching components were connected to the nonlinear load of the pair of Schottky microwave detector diodes, used as rectifiers. The ADS Harmonic Balance simulator was used to design the impedance matching circuit. Read the paper, “RF Energy Harvesting Design Using High Q Resonators” to learn more details about how Ericsson and Frieburg University designed a high Q power harvesting circuit using Keysight ADS.
Learn how ADS can help you in your power harvesting designs by clicking HERE for a free trial.