Designing dual-port pixel antenna for ambient RF energy harvesting using genetic algorithm

In this paper we provide a design for a dual-port pixel antenna for energy harvesting in ambient RF electromagnetic fields. We use Z-parameters to analyze the equivalent circuit network of the antenna and find the relationship between the connections of the pixels in the antenna and the received power. Finding the optimal connection configuration for the pixels which maximizes the power over a frequency band is then achieved by using the genetic algorithm. The simulation result shows that the proposed dual-port antenna can achieve a better power performance than a single dipole antenna of similar size. Measurement results are also provided.