Performance of Rectangular Micro-Strip Notch Antenna for RF Energy Harvesting Applications

An enhanced bandwidth and performance for Wi-Fi applications was achieved through the design and optimization of a notched rectangle microstrip patch antenna in this work. A transmission line model was used in the CST STUDIO SUITE to develop an inset-fed microstrip rectangle patch antenna that would guarantee correct matching of impedance with the microstrip communication line. One of the crucial elements determining the antenna's physical properties, which in turn affected its ideal performance, was the substrate material. Radiation efficiency and impedance matching were the main objectives of this design, which was completed with careful consideration for the patch's size and feed placement. An extensive analysis was conducted on the antenna's key performance parameters, including efficiency, Voltage Standing Wave Ratio (VSWR), far-field radiation patterns, and return loss. The results for return loss demonstrated very good impedance matching, and the far-field radiation pattern demonstrated extremely good directivity with an effective proportion of energy. The return loss study showed a significant reduction at 2.275 GHz, while the VSWR data confirmed a nearly perfect match at the target frequency of 2.45 GHz. With a main lobe gain of 11.1 dB and a peak radiation efficiency of 90% at the design frequency, it is an excellent choice for applications involving the harvesting of radio frequency energy from ambient sources such as Wi-Fi, GSM, UMTS, and LTE signals. The chosen frequencies of 2.275 GHz and 2.45 GHz were selected to optimize impedance matching and enhance the antenna's performance for Wi-Fi and other RF energy harvesting applications, ensuring efficient energy capture and utilization. This work emphasizes the antenna's increased capabilities and provides a workable solution, as well as new applications for contemporary wireless communication systems.