A Wideband Fractal Planar Monopole Antenna with a Thin Slot on Radiating Stub for Radio Frequency Energy Harvesting Applications

In this paper, for energy harvesting applications a design of a wideband planar monopole antenna is proposed using fractal geometry and inserting a thin slot on radiation patch. The proposed antenna is optimized at various stages during its design. Moreover, a parametric study is done for understanding sensitivity of important design parameters in the design process of the antenna. The designed antenna operates at ۱۰-dB impedance bandwidth from ۰.۹۲ to ۲.۵۸ GHz (fractional bandwidth of ۹۵%) with low profile structure and compact size of ۶۵ × ۶۵ × ۰.۸ mm۳, acceptable return losses, stable radiation characterizes and reasonable gains. A potential application of the antenna as a receiving antenna for harvesting systems has been carried out inside the laboratory as the harvested power from ambient radio-frequency (RF) energy. This wideband antenna has a good potential to harvest RF energy of available signals in the GSM-۹۰۰, GSM-۱۸۰۰, and Wi-Fi bands, and can be used as a part in DC power supply modules of low power sensor networks.

کلیدواژه ها:

Wideband Monopole Antenna ، fractal geometry ، Slot on Radiating Stub ، Radio Frequency Energy Harvesting