Microstrip-based Patch Array with rectenna architecture for radio frequency energy harvesting at 2.45 GHz ISM band

In this article, a microstrip-based patch array antenna with rectifying circuit is presented over FR-4 substrate for 2.45 GHz ISM band applications. The antenna offers high gain of around 7 dBi with bandwidth of around 131 MHz over the central frequency. Corporate feeding network is adopted here. Further, an efficient rectifying circuit with 80.6 % efficiency is proposed with BAT-15 high frequency diode and inverted-J shaped stub loaded impedance matching network. This work also covers the electrical equivalent circuit modelling of the entire circuit. The performance metrics of the whole network are analyzed.