Abstract
In this work, a patch antenna array is presented, which is operating at 2.4 GHz in the WLAN frequency band. It allows energy harvesting from low power RF waves with a high gain. It consists of a four patch elements design on a RT /Duroid substrate with a dielectric constant of 2.2. Simulation results show an improved properties concerning size, bandwidth, gain, return loss and input impedance of the antenna. The hardware implementation of the patch antenna array reaches significant improvements compared with state of the art. With 15.04 dBi gain, −26.46 dB return loss and $52.45\Omega$ input impedance the antenna allows energy harvesting even for low received power level. Different methods have been used to increase the bandwidth and achieve 2 % of operating frequency.
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