An Array Antenna Design For RF Energy Harvesting System

Sharif Ahmed , Qasem Ahmed (2015) An Array Antenna Design For RF Energy Harvesting System. Project Report. UTeM, Melaka, Malaysia. (Submitted)

Text (24 pages) An Array Antenna Design For RF Energy Harvesting System 24 Pages.pdf - Submitted Version Download (649kB)

Abstract

In RF energy harvesting, an antenna is very important part that used to capture the ambient RF signals. However, in many cases of RF energy harvesting, the gain of the antenna used is quite low so that it results in low output DC voltage of overall RF energy harvesting system. This project aims to design an antenna that provides a high gain so that the DC output voltage would be increased. 4×1 and 2×2 arrays antennas are designed in CST Studio Suite software. Optimization in CST software for the arrays antennas designed is done prior to fabrication process that is carried in the laboratory. Once the simulation and fabrication processes are done, comparison of the antennas performance is carried, in terms of antenna parameters such as gain, return loss, bandwidth, efficiency and radiation pattern. The arrays antennas are designed for WLAN applications operating at frequency of 2.45 GHz with return loss less than -20 dB and wide bandwidth greater 80 MHz. The DC voltage produced by RF Energy harvesting system can be used to power the low power devices such as mobile phones and wireless sensors used under the sea so that batteries do not have to be replaced frequently which will save environment of batteries waste and save a lot of money spent for replacing the low power devices batteries as well.

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