Vol. 117

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2021-12-21

Design and Analysis of Rectenna at 2.42 GHz for Wi-Fi Energy Harvesting

By Rashmi Pandey, Ashok Kumar Shankhwar, and Ashutosh Singh
Progress In Electromagnetics Research C, Vol. 117, 89-98, 2021
doi:10.2528/PIERC21100409

Abstract

This work proposes a design of rectenna for Wi-Fi energy harvesting application at 2.42 GHz. The proposed antenna includes a modified rectangular patch and two circular radiating elements with partial ground, and adopts a total area of 80 × 80 mm2. With the partial ground structure, the proposed antenna shows a better reflection coefficient (S11) at 2.42 GHz. The proposed antenna is a modified conventional patch antenna that shows its improved suitability for Wi-Fi energy harvesting at the targeted band. For rectenna, an impedance matching circuit based on microstrip transmission lines, radial stubs, and enhanced Greinacher voltage doubler rectifier circuits are designed. The rectifier circuit occupies a total area of 25 × 25 mm2. The antenna part of the rectenna exhibits quite good S11 < -10 dB and 3.94 dB peak gain. To validate the design experimentally, a prototype of the proposed rectenna is also fabricated. The measured result indicates that at the resonant frequency the rectenna achieves the peak efficiency of 78.53%, and the output voltage is 4.7 V at 0 dBm input power.

Citation


Rashmi Pandey, Ashok Kumar Shankhwar, and Ashutosh Singh, "Design and Analysis of Rectenna at 2.42 GHz for Wi-Fi Energy Harvesting," Progress In Electromagnetics Research C, Vol. 117, 89-98, 2021.
doi:10.2528/PIERC21100409
http://jpier.org/PIERC/pier.php?paper=21100409

References